Recognition and revision of the Phelister blairi group (Histeridae, Histerinae, Exosternini)

Michael S. Caterino; Alexey K. Tishechkin

doi:10.3897/zookeys.1001.58447

Monograph

Recognition and revision of the Phelister blairi group (Histeridae, Histerinae, Exosternini)

Michael S. Caterino^‡, Alexey K. Tishechkin^§

‡ Clemson University, Clemson, United States of America

§ California Dept. of Food and Agriculture Plant Pest Diagnostics Center, Sacramento, United States of America

Corresponding author: Michael S. Caterino ( mcateri@clemson.edu )

Academic editor: Aaron Smith

This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Citation: Caterino MS, Tishechkin AK (2020) Recognition and revision of the Phelister blairi group (Histeridae, Histerinae, Exosternini). ZooKeys 1001: 1-154. https://doi.org/10.3897/zookeys.1001.58447

ZooBank: urn:lsid:zoobank.org:pub:5914D476-D746-459A-BCBF-F86C8BD0A78B

Abstract

Forty-nine new species of Neotropical Exosternini are described in this work, representing the newly recognized Phelister blairi species group, within the large, heterogeneous taxon Phelister. Eight previously described species are also assigned to this group. Relationships within are indicated with several informal subgroups: P. blairi subgroup: (P. blairi Hinton, 1935, P. erwini sp. nov., P. fimbriatus sp. nov., P. stellans sp. nov., P. sparsus sp. nov., P. pretiosus sp. nov., P. trigonisternus Marseul, 1889, P. globosus sp. nov., P. serratus sp. nov., P. geminus sp. nov., P. parana sp. nov., P. asperatus sp. nov., P. uniformis sp. nov., P. miscellus sp. nov., P. inbio sp. nov., P. sculpturatus Schmidt, 1893, P. tunki sp. nov., P. praedatoris Reichensperger, 1939, P. ifficus sp. nov., P. genieri sp. nov., P. marginatus sp. nov., P. vazdemelloi sp. nov., P. dilatatus sp. nov., P. spectabilis sp. nov., P. pervagatus sp. nov.); P. amazoniae subgroup: (P. morbidus sp. nov., P. annulatus sp. nov., P. sphaericus sp. nov., P. geijskesi Kanaar, 1997, P. fraternus sp. nov., P. conjunctus sp. nov., P. chabooae sp. nov., P. striatinotum Wenzel & Dybas, 1941, P. notandus Schmidt, 1893, P. amazoniae (Lewis, 1898) comb. nov., P. arcuatus sp. nov.); P. gregarius subgroup: (P. gregarius sp. nov., P. praecisus sp. nov., P. rudis sp. nov., P. incongruens sp. nov., P. congruens sp. nov., P. praesignis sp. nov.); P. umens subgroup: (P. umens sp. nov., P. almeidae sp. nov., P. chicomendesi sp. nov., P. microdens sp. nov., P. matatlantica sp. nov.); P. curvipes subgroup: (P. curvipes sp. nov., P. vilavelha sp. nov.); P. rio subgroup: (P. rio sp. nov., P. semotus sp. nov., P. uncinatus sp. nov., P. inscriptus sp. nov.); incertae sedis – unplaced to subgroup: (P. incertus sp. nov., P. okeefei sp. nov., P. blairoides sp. nov., P. pirana sp. nov.). Lectotypes are designated for the following species: P. trigonisternus Marseul, P. sculpturatus Schmidt, P. praedatoris Reichensperger, P. notandus Schmidt, and Discoscelis amazoniae Lewis. Preliminary phylogenetic analyses of the broader Neotropical Exosternini do not support the monophyly of the P. blairi group, nor of all of these subgroups, but the majority do fall within one large clade (which is potentially paraphyletic with respect to some other Neotropical exosternine genera). More work on the phylogeny and taxonomy of this diverse fauna is needed.

Keywords

Biodiversity, Histeroidea, myrmecophily, taxonomy

Introduction

The Neotropical Exosternini represent one of the largest radiations of Histeridae, with more than 650 species (Caterino and Tishechkin, unpub. data). To date fewer than half of these have been described (298 spp.), but even this represents a three-fold increase over the past decade. As relationships and taxonomic limits have slowly improved, we have carved off and revised a number of subgroups/genera (Caterino et al. 2012, 2013; Caterino and Tishechkin 2013a, b, 2014, 2016, 2019). However, the fauna remains a complicated one, containing many small, similar-looking species with relatively few distinguishing features. Attempts to resolve these relationships in order to delineate more meaningful taxa have met with mixed success (Caterino and Tishechkin 2015), and we have largely taken a pragmatic approach, under the presumption that increasing knowledge of the species level diversity across the tribe will lead to further improvements in our understanding of the higher level relationships. We continue that approach here, expanding the scope of the already large taxon Phelister.

In the present paper, we circumscribe a new subgroup of Phelister, the P. blairi group, redescribing several previously described species that we assign here, describe a large number of species, and perform a phylogenetic assessment of where they fit in among the other neotropical Exosternini. The P. blairi group contains 57 species, 49 of them being described here as new. We allocate most of these to six informal subgroups, leaving four unplaced to subgroup. Informally, the authors have long referred to these as ‘the scutellar impression group’, and most (not all) of the included species exhibit a distinct prescutellar impression. More formally, we have previously referred to these as ‘Phelister blairi group’, though without explicitly assigning species to it (Caterino and Tishechkin 2013b). Most (7 out of 8) of the previously described species here have been assigned to Phelister. However, the sole exception points out the primary challenge with this group: this is Reninus amazoniae (Lewis), clearly a relative of Phelister blairi and other more generalized species, but until now assigned to a genus of Haeteriinae. In fact, many Neotropical Exosternini exhibit highly modified morphologies, attributable in most to inquilinism with social insects, mainly ants. The Phelister blairi group encompasses one or more such transitions into inquilinous habits, and offers an interesting array of morphological characters accompanying the transition.

In our previous phylogenetic analysis of Neotropical Exosternini (Caterino and Tishechkin 2015), most of the species included here fell out within a large clade sister to much of Phelister. However, there were a number of exceptions to their exclusivity. Several species that we contend should be closely related fell elsewhere among the diverse Phelister species. In other cases, some falling outside the ‘blairi group’ would support preliminary hypotheses that the similarities shared (a prescutellar impression, mainly) were homoplasious. On the other hand, the core blairi group clade also appears to be paraphyletic with respect to several other taxa, especially if we include Phelister striatinotum in our blairi group concept, which we have. The few ‘typical Phelister’ inclusions are all species that have large amounts of missing data (male genitalia and DNA, especially), and for now cannot be adequately evaluated. However, the inclusion of most of the genera that we recently described (Pyxister, Crenulister, Conocassis, etc.; Caterino and Tishechkin 2014) as well as the very large genus Operclipygus poses significant difficulties. To address these, we present some new analyses, based on a reduced taxon set (allowing more thorough analysis of more contentious relationships), and discuss some slightly refined perspectives on relationships below.

Materials and methods

The morphological terminology used is that defined by Wenzel and Dybas (1941), supplemented by Helava et al. (1985), Ôhara (1994), and Caterino and Tishechkin (2013b). Following histerid conventions, total body length is measured from the anterior margin of the pronotum to the posterior margin of the elytra (to exclude preservation variability in head and pygidial extension), while width is taken at the widest point, generally near the elytral humeri. Conventional imaging was done using Leica’s Photomontage imaging system and Visionary Digital’s ‘Passport’ portable imaging system, which incorporates a Canon 7D with MP-E 65 mm 1–5 × macro zoom lens. Images obtained with the Passport system were stacked using Helicon Focus software. SEM imaging was done on a Zeiss EVO 40 scope, and the specimens were sputter-coated with gold. We have studied and imaged primary types of all species; images of these type specimens beyond those presented in this paper are available from the authors. Data quoted verbatim from labels are surrounded by double quotes (“_”) with distinct labels separated by slashes (/). Non-verbatim data (paratypes and ‘other material’) are summarized in a standard format. GPS coordinates have been inferred for most localities and/or standardized to decimal degrees. Dates outside of verbatim records are presented as MM/DD/YY.

Specimens from following institutions were examined:

AKTC Alexey Tishechkin Collection, Sacramento, USA;

AVSC Alexander Sokolov Collection, Moscow, Russia;

CASC California Academy of Sciences Collection, San Francisco, USA;

CESP Coleção Entomológica do Setor Palotina, Universidade Federal do Paraná, Palotina, Brazil;

CEMT Setor de Entomologia da Coleção de Zoológica da Universidade Federal de Mato Grosso, Cuiabá, Brazil;

CERPE Coleção Entomológica da Universidade Federal Rural de Pernambuco, Recife, Brazil;

CHND Nicolas Dégallier Collection, Paris;

CHSM Slawomir Mazur Collection, Genova, Italy;

CMNC Canadian Museum of Nature, Ottawa, Canada;

CSCA California State Collection of Arthropods – CDFA, Sacramento, USA;

CUAC Clemson University Arthropod Collection, Clemson, USA;

DZUP Coleção Entomológica Padre Jesus Santiago Moure, Departamento de Zoologia, Universidade Federal do Paraná, Curitiba, Brazil;

FMNH Field Museum, Chicago, USA;

FSCA Florida State Collection of Arthropods, Gainesville, USA;

INBIO Instituto Nacional de Biodiversidad, San Jose, Costa Rica;

LSAM Louisiana State Arthropod Museum, Baton Rouge, USA;

MNCR Museo Nacional de Costa Rica, San Jose, Costa Rica;

MNHN Museum National d’Histoire Naturelle, Paris, France;

MSCC Michael Caterino Collection, Clemson, USA;

MUSM Colección Entomológica del Museo de Historia Natural de la Universidad Nacional Mayor de San Marcos, Lima, Peru;

NHMUK Natural History Museum, London, UK;

OUMNH Hope Museum of Natural History, Oxford, UK;

RMNH Naturalis Biodiversity Center, Leiden, Netherlands;

SEMC Snow Entomology Museum, University of Kansas, Lawrence, USA;

TAMU Texas A&M University Collection, College Station, USA;

UCONN Rettenmeyer Army Ant Guest Collection, Biodiversity Research Collections, University of Connecticut, Storrs, USA;

UNESP Universidade Estadual Paulista, Faculdade de Engenharia de Ilha Solteira, Ilha Solteira, Brazil;

USFQ Universidad San Francisco de Quito, Ecuador;

USNM National Museum of Natural History, Washington, USA;

WBWC Bill Warner Collection, Chandler, USA;

ZMHB Zoological Museum of Humboldt University, Berlin, Germany.

Phylogeny

We analyzed a subset of taxa from the 750+ taxon data set of Caterino and Tishechkin (2015) to attempt to better resolve species hypothesized to belong to the Phelister blairi group. This pruned data set included only small numbers of exemplars for those groups previously strongly supported as monophyletic. Specifically, it includes only three species of Baconia Lewis, two species of Hypobletus Schmidt, and one of Megalocraerus Lewis. We included twelve species of Operclipygus Marseul, given potentially close relationships to the blairi group, and most species of recently described genera (Caterino and Tishechkin 2014) with potential relationships to the blairi group. We reduced the number of outgroups to 12 (from 61), representing non-neotropical Exosternini, other tribes of Histerinae, and Haeteriinae. Finally, we added five newly discovered or recognized species within our concept of the blairi group (and removed a few others now considered synonyms of other species). This revised data set included a total of 235 taxa, including most described and undescribed Phelister and Pseudister spp., as well as many other undescribed species of uncertain placement. The included data for all partitions are identical to those included in our 2014 analysis. This included 259 morphological characters (141 external morphology, 87 of male genitalic morphology, and 31 of female genitalic morphology), and approximately 1/4 were represented by some molecular data, including some combination of 18S, 28S, and cytochrome oxidase I. Molecular data were sparse for blairi group taxa, as most of these have been collected only through flight interception trapping. Suppl. material 1: Table S1 details what species were included and what partitions were available for them. We did not realign the length variable portions for this reduced dataset, maintaining homology assessments from the preceding analysis. For original alignment parameters see Caterino and Tishechkin (2015). This reduced data set is available as an online supplement (Suppl. material 2). Tree searching was performed in PAUP* (v. 4.0a164; Swofford 2002) under the maximum parsimony criterion, running 1000 random sequence addition replicates, saving no more than 2000 trees for each replicate.

Results

Phylogeny

This analysis yielded 131648 trees of 13048 steps (CI: 0.1752; RI: 0.4006). The majority rule consensus of these (Fig. 1) is remarkably well resolved, with high consistency of the vast majority of branches. However, the consistency of the topology with the current taxonomy of Neotropical Exosternini is very low – few genera represented by multiple species are monophyletic. With respect to the possible monophyly of the P. blairi group, which we establish here, monophyly is also not supported. The species that we treat here as the blairi group (names in red in Fig. 1) fall out in 10 places in the tree. Still, the majority (39 spp.) do fall out together, together constituting most of a clade, the only exceptions being a few small genera which have been named as distinct (including Crenulister Caterino & Tishechkin, [2014], to which one of the species we describe here might possibly be related). This large lineage includes most members of the blairi, gregarius, and amazoniae subgroups with the blairi subgroup appearing potentially paraphyletic with respect to the others. The amazoniae subgroup species that are not resolved within this lineage (P. geijskesi and P. striatinotum) are indeed species that exhibit some inconsistent characters. Three subgroups fall entirely outside of this group. Two of these, the curvipes and umens subgroups do appear monophyletic, though far from each other and the rest of the blairi group. The umens subgroup is resolved as the sister of the P. haemorrhous group, which we recently revised (Caterino & Tishechkin, 2019). The rio subgroup falls out in three separate places on the tree, suggesting that the characters those species share are mostly plesiomorphies or convergences. Overall, despite the obvious problems this phylogenetic hypothesis poses for an ideally cladistic nomenclature, this tree does offer improved perspective on possible relationships across Phelister and helps point out areas in which further characters are needed. As we continue to accumulate DNA-grade specimens of these taxa, we look forward to continued improvement in understanding their relationships.

Figure 1.

Majority rule consensus of 131648 trees of 13048 steps (CI: 0.1752; RI: 0.4006). Selected members of all Neotropical Exosternini higher taxa are included. Those we assign to the Phelister blairi group have their names in bold red font. The subgroups that we assign them to are indicated by colored names at the right (red = rio subgroup, green = blairi subgroup, dark blue = amazoniae subgroup, light blue = curvipes subgroup, gold = umens subgroup, violet = gregarius subgroup). Numbers above branches represent majority rule consensus indices.

Taxonomy

Diagnosis of the Phelister blairi group

Prescutellar impression (Fig. 2A–C, E, F) as large or larger than the scutellum, posteriorly confluent with the pronotal margin; frons and epistoma (Fig. 2D) fairly strongly depressed, epistoma sometimes ridged around the margin of this depression; frontal stria almost always present, often interrupted medially or at sides or both; distal margin of labrum emarginate, weakly transversely ridged at middle, sometimes subcarinate; anterior arch of mesometaventral stria reaching middle of mesoventrite or beyond, usually angulate at middle, sometimes arched; lateral submarginal pronotal stria, if present, close to margin, the marginal bead frequently raised between the stria and the edge; median pronotal gland openings (Fig. 2A–C, E, F; sensu Caterino and Tishechkin 2013b) conspicuous, usually annulate (with a fine stria encircling opening), located on posterior 1/2 of disk in most species; anterior marginal pronotal stria crenulate, usually entire and slightly separated from margin behind head, occasionally interrupted behind eyes and recurved posterad (as in P. blairi and a few others).

Figure 2.

Images of selected characters A SEM of pronotum of Phelister geminus, showing prescutellar impression and annulate median pronotal glands B SEM of pronotum of P. erwini, showing prescutellar impression and annulate median pronotal glands C SEM of pronotum of Phelister sculpturatus, showing prescutellar impression and annulate median pronotal glands D head of P. geminus, showing depressed frons and epistoma, and emarginate labrum E pronotum of P. uncinatus, showing non-annulate median pronotal gland openings F pronotum of P. semotus, showing non-annulate median pronotal gland openings G protibia of P. geminus, showing ‘scalloped’ protibial margin.

Checklist of the species treated in this paper

Phelister blairi subgroup

1. P. blairi Hinton, 1935
2. P. erwini sp. nov.
3. P. fimbriatus sp. nov.
4. P. stellans sp. nov.
5. P. sparsus sp. nov.
6. P. pretiosus sp. nov.
7. P. trigonisternus Marseul, 1889
8. P. globosus sp. nov.
9. P. serratus sp. nov.
10. P. geminus sp. nov.
11. P. parana sp. nov.
12. P. asperatus sp. nov.
13. P. uniformis sp. nov.
14. P. miscellus sp. nov.
15. P. inbio sp. nov.
16. P. sculpturatus Schmidt, 1893a
17. P. tunki sp. nov.
18. P. praedatoris Reichensperger, 1939
19. P. ifficus sp. nov.
20. P. genieri sp. nov.
21. P. marginatus sp. nov.
22. P. vazdemelloi sp. nov.
23. P. dilatatus sp. nov.
24. P. spectabilis sp. nov.
25. P. pervagatus sp. nov.

P. amazoniae subgroup

26. P. morbidus sp. nov.
27. P. annulatus sp. nov.
28. P. sphaericus sp. nov.
29. P. geijskesi Kanaar, 1997
30. P. fraternus sp. nov.
31. P. conjunctus sp. nov.
32. P. chabooae sp. nov.
33. P. striatinotum Wenzel & Dybas, 1941
34. P. notandus Schmidt, 1893b
35. P. amazoniae (Lewis, 1898)
36. P. arcuatus sp. nov.

P. gregarius subgroup

37. P. gregarius sp. nov.
38. P. praecisus sp. nov.
39. P. rudis sp. nov.
40. P. incongruens sp. nov.
41. P. congruens sp. nov.
42. P. praesignis sp. nov.

P. umens subgroup

43. P. umens sp. nov.
44. P. almeidae sp. nov.
45. P. chicomendesi sp. nov.
46. P. microdens sp. nov.
47. P. matatlantica sp. nov.

P. curvipes subgroup

48. P. curvipes sp. nov.
49. P. vilavelha sp. nov.

P. rio subgroup

50. P. rio sp. nov.
51. P. semotus sp. nov.
52. P. uncinatus sp. nov.
53. P. inscriptus sp. nov.

incertae sedis – unplaced to subgroup

54. P. incertus sp. nov.
55. P. okeefei sp. nov.
56. P. blairoides sp. nov.
57. P. pirana sp. nov.

Key to the species of the Phelister blairi group

This key will diagnose members of the P. blairi group from any other Phelister, and will also separate them from members of similar genera, particularly Operclipygus. Phelister blairi group species are numbered according to their order of appearance in the text below.

1	Pronotum with prescutellar impression distinct (a flat depressed area delimited by a distinct stria immediately anterior to the scutellum; e.g., Fig. 2A–C)	2
–	Pronotal prescutellar impression poorly defined or absent	7
2	Anterior margin of pronotum behind head produced; prescutellar impression usually little larger than scutellum; prosternal keel striae usually weak to obsolete; base of prosternal keel weakly emarginate	[Phelister sanguinipennis group]
–	Anterior margin of pronotum behind head straight or posteriorly concave, rarely very weakly produced; prescutellar impression usually substantially larger than scutellum; prosternal keel striae usually well developed, base of prosternal keel usually distinctly emarginate	3
3	Median pronotal gland openings no more than three diameters from anterior margin of pronotum, never annulate	[various Phelister & Operclipygus]
–	Median pronotal gland openings more than three gland diameters from anterior margin (if pronotal gland openings are unclear because of dense pronotal ground punctation, go to Phelister blairi group key, starting at couplet 14), usually distinctly annulate (if non-annulate, then inner margins of protibiae curved)	4
4	Pronotal gland openings not annulate, a simple hole with no ring around it (Fig. 2E–F)	5
–	Pronotal gland openings distinctly annulate (e.g., Fig. 2A–C)	6
5	Prescutellar impression as wide or wider than scutellum, usually much wider; frons and epistoma typically longitudinally depressed (e.g., Fig. 2D)	[Phelister blairi group] 14
–	Prescutellar impression not as wide as scutellum, or thin and elongate; frons and epistoma rarely strongly impressed	[various Phelister & Operclipygus]
6	Body size very small, ~ 1 mm or less; lateral submarginal pronotal stria absent; frons and epistoma only weakly or not at all impressed; pronotal gland openings from 4–6 diameters from the anterior pronotal margin; antennal club barely elongate	[various Phelister]
–	Body size generally larger; lateral submarginal stria usually present (may be variously abbreviated); frons and epistoma moderately to strongly depressed along midline (except in P. geijskesi); pronotal gland openings nearly always more than six diameters from anterior pronotal margin (exception: P. blairi); antennal club usually markedly elongate	[Phelister blairi group] 14
7	Inner subhumeral stria raised to form a marginal elytral carina aligned with lateral pronotal margin; pronotal disk explanate along inner edge of submarginal pronotal stria (e.g., Fig. 21C, E); entire body (dorsum and venter) densely punctate; body rounded, subdepressed; tibiae moderately widened	[Phelister blairi group] 14
–	Inner subhumeral stria only very rarely forming marginal elytral carina; if it does, pronotum not strongly explanate	8
8	Elytral striae 3–5 and sutural stria absent	9
–	At least sutural and 3^rd elytral striae present	11
9	Body depressed, sides rounded; pygidium prolonged and subacute; frons convex; protibiae rounded, strongly spinose; meso- and metatibiae very narrow, with few marginal spines	[*Lacrimorpha*]
–	Not fitting the above description	10
10	Mesoventrite with deep anterolateral depressions (Fig. 15B)	P. spectabilis [24]
–	Mesoventrite lacking deep anterolateral depressions	P. notandus [34]
11	Pattern of pronotal punctation unique, with most conspicuous punctures across middle of basal portion, grading to smooth anterad (Fig. 19E); most elytral striae complete (somewhat varied), strongly crenulate; body subdepressed, rather strongly tapered at pygidium; protarsi of both sexes with spatulate setae	P. chabooae [32]
–	Not fitting the above description	12
12	Pronotal gland openings located ~ 1/6 of pronotal length from anterior margin, at apices of broken anterior marginal stria (Fig. 36G); outer subhumeral stria complete; prosternal keel striae absent (Fig. 36H); dorsal elytral striae 2–5 becoming disconnected series of punctures apically (Fig. 36G)	P. pirana [57]
–	Not fitting the above description, usually with prosternal keel striae and with elytral striae well defined to apices; other characters varied	13
13	Dorsum conspicuously punctate; body large (> 4 mm), rarely with marginal pygidial stria	[Phelister blairi group] 14
–	Dorsum typically with only fine ground punctation (only a few exceptions, which have a marginal pygidial stria); body size variable, but usually < 4 mm	[various Phelister, Operclipygus]

Phelister blairi group

14	Protibial margin appearing scalloped, marginal teeth and spines minute, set deep in marginal incisions (Fig. 2G)	15
–	Protibial margin normally toothed; marginal spines conspicuous	21
15	Pronotal glands non-annulate (e.g., Figs 2E–F, 27C, 27E); 4^th dorsal elytral stria abbreviated from base	17
–	Pronotal gland openings usually annulate; 4^th dorsal elytral stria arched at base toward sutural stria	16
16	Frontal stria usually complete (central portion not detached from lateral portion); pronotum with more conspicuous, enlarged punctures in lateral 1/3 of disk, punctures appearing rather abruptly laterad of the pronotal gland openings; body more elongate (Fig. 27C); pronotal disk not deeply impressed along inner edge of submarginal stria	P. serratus [9]
–	Central portion of frontal stria detached from lateral portion; pronotum with fewer, smaller lateral pronotal punctures; body broader (Fig. 27E); pronotal disk deeply impressed along inner edge of submarginal stria, sub-explanate	P. geminus [10]
17	Lateral submarginal pronotal stria present in less than apical 1/2	18
–	Lateral submarginal pronotal stria longer, complete or nearly so	20
18	Striae of prosternal keel well-impressed, meeting anteriorly (Fig. 27D)	P. almeidae [44]
–	Striae of prosternal keel week to obsolete, not meeting anteriorly (e.g., Fig. 27F)	19
19	Median pronotal gland openings very close to pronotal midpoint (~ 1/2 pronotal length behind anterior pronotal margin) (Fig. 29A)	P. microdens [46]
–	Median pronotal gland openings behind pronotal midpoint, nearly 2/3 pronotal length behind anterior pronotal margin (Fig. 27E)	P. chicomendesi [45]
20	Body smaller, more rufescent; outer subhumeral elytral stria absent; lateral submarginal pronotal stria usually slightly abbreviated from apex	P. umens [43]
–	Body larger, faintly bicolored (Fig. 29C), with the posterior 3/4 darker than most of the rest of the rufescent dorsum; outer subhumeral stria present in apical 1/3; lateral submarginal pronotal stria complete or nearly so	P. matatlantica [47]
21	Pronotal gland openings non-annulate (Fig. 2E, F)	22
–	Pronotal gland openings usually annulate (Fig. 2A–C), or gland openings are obscured by dense pronotal punctation, position varied	30
22	Fourth dorsal elytral stria not arched to meet sutural stria	24
–	Fourth dorsal elytral stria arched to suture	23
23	Pronotal ground punctation very fine, sparse, and inconspicuous (Fig. 7A)	P. globosus [8]
–	Pronotal ground punctation very conspicuous (Fig. 9E)	P. miscellus [14]
24	Sutural stria complete, basally hooked (Fig. 36A)	P. incertus [54]
–	Sutural stria not complete	25
25	Protibia with inner margin straight, mandibles without strong teeth, at most small blunt teeth at base of incisor edge	26
–	Protibia with inner margin inwardly curved (Fig. 31E); both mandibles with strong tooth, that of left mandible weakly bifid	29
26	Fourth or 5^th elytral stria represented at base by arch or fragments, may be connected to other striae or not	27
–	No arches or fragments of striae four or five present near elytral base	28
27	Fourth elytral stria reaching base of elytron as a short straight stria or disconnected basal appendix; 5^th stria represented by short, disconnected basal arch (Fig. 33C)	P. semotus [51]
–	Base of elytron with longer disconnected arch from base of 4^th stria to base of sutural stria (Fig. 33E) (neither of which otherwise reaches the elytral base)	P. uncinatus [52]
28	Third elytral stria complete; 4^th and 5^th elytral striae present at least in apical 1/3 of elytron	P. rio [50]
–	Third elytral stria interrupted or basally abbreviated, continued to elytral base only by very fine scratch (Fig. 33G); 4^th and 5^th striae extremely short and apical	P. inscriptus [53]
29	Fourth elytral stria reaching elytral base, sutural stria normally impressed	P. curvipes [48]
–	Fourth elytral stria obsolete in basal 1/3; sutural stria present only as a series of disconnected punctures	P. vilavelha [49]
30	Lateral pronotal margins rather broadly explanate; all tibiae widened; dorsum coarsely punctate	31
–	Lateral pronotal margins not explanate, at most narrowly depressed along inner edge of lateral submarginal stria; some tibiae may be somewhat broad, but never with tibiae distinctly expanded; dorsum sculpturing variable; elytral striae only very rarely (and then weakly) carinate	34
31	Body convex, elongate; tibiae and femora both broadly expanded (Fig. 21G); several elytral striae carinate, but none forming distinct lateral elytral margin	32
–	Body subdepressed, rounded; tibiae but not femora broadly expanded; only inner subhumeral stria carinate, forming lateral elytral margin (Fig. 13A, C)	33
32	Pygidium with complete apical marginal stria	P. amazoniae [35]
–	Pygidium lacking marginal stria	P. arcuatus [36]
33	Most dorsal elytral striae very weakly impressed, effaced (Fig. 13C); known only from Costa Rica	P. marginatus [21]
–	All dorsal elytral striae distinct; known only from Bolivia (Fig. 13A)	P. genieri [20]
34	Some part of lateral submarginal pronotal stria present (may be close to margin and carinate, or substantially abbreviated and/or represented by series of punctures)	42
–	Lateral submarginal pronotal stria absent	35
35	Prosternal keel broad, striae strongly reduced or absent (Fig. 15D); 4^th elytral stria present as a basal transverse arch (disconnected from apical portion of stria; Fig. 15C)	P. pervagatus [25]
–	Prosternal striae well developed	36
36	Frons and epistoma at least weakly depressed along midline; elytral striae not carinate; frontal stria present at middle (may be detached from sides)	37
–	Frons and epistoma not at all depressed; elytral striae weakly carinate (Fig. 17G); frontal stria broadly interrupted across middle	P. geijskesi [29]
37	Pronotum uniformly and conspicuously punctate (Fig. 25C, E)	38
–	Pronotum may be densely punctate at sides, but not uniformly across entire disk	39
38	Outer subhumeral elytral stria present at base and apex (may be interrupted at middle); prescutellar impression wider, ~ 2 × as wide as scutellum (Fig. 25C)	P. congruens [41]
–	Outer subhumeral elytral stria present in apical 1/2 only; prescutellar impression rather narrow, little wider than scutellum (Fig. 25E)	P. praesignis [42]
39	Prescutellar impression very large, > 6 × scutellum width, anterior margin sinuate (Fig. 19G)	P. striatinotum [33]
–	Prescutellar impression 2–3 × scutellum width, anterior margin broadly or narrowly rounded	40
40	Prescutellar impression subtriangular (Fig. 36C); median pronotal gland openings ~ 1/3 behind the anterior margin; left mandible with strong basal tooth	P. okeefei [55]
–	Prescutellar impression broadly oval; median pronotal gland openings ~ 3/4 from anterior margin; left mandible without basal tooth	41
41	Labral disk with a large fovea (Fig. 5G); apex of aedeagus broad and flat (Fig. 6J, K)	P. trigonisternus [7]
–	Labrum without a fovea on dorsal surface; apex of aedeagus very narrow and curved ventrad (Fig. 18A, B)	P. morbidus [26]
42	Outer subhumeral elytral stria ‘split’, with two branches in basal 1/2	P. dilatatus [23]
–	Outer subhumeral stria, if present, never split, only present as a single stria throughout its length (which may range from complete to absent)	43
43	4^th elytral stria with inwardly directed basal arch, reaching or nearly reaching the sutural stria (may or may not be connected to either the 5^th or the sutural striae)	44
–	4^th dorsal without basal arch, either more or less straight at base, or present only at apex of elytra (there may be an arch at the base of the 5^th stria)	62
44	Median pronotal gland openings 1/5 from the anterior margin; anterior marginal pronotal stria broken slightly, recurved at ends (Figs 3A, 36E)	45
–	Median pronotal gland openings 1/3 or more from anterior pronotal margin (or obscured by dense pronotal punctation)	46
45	Lateral submarginal pronotal stria abbreviated, present only in apical 1/2 (Fig. 3A); outer subhumeral stria present in apical 1/2 only	P. blairi [1]
–	Lateral submarginal pronotal stria complete (Fig. 36E); outer subhumeral elytral stria present at base and apex, interrupted at middle	P. blairoides [56]
46	Significant portion of dorsal surface conspicuously punctate, pronotum with at least some secondary punctures in middle third (e.g., Figs 11A, 13G)	47
–	Dorsal surface with only scattered, minute (typical) surface punctures, larger secondary punctures, if present, confined to lateral thirds of the pronotum	58
47	Some portion of inner subhumeral elytral stria present (rarely as series of punctures)	51
–	Inner subhumeral elytral stria absent	48
48	Prescutellar impression distinct; punctation of elytra finer and sparser than that of pronotum	49
–	Prescutellar impression obscured by punctures, indistinct; pronotum and elytra similarly and densely punctate (Fig. 11G)	P. ifficus [19]
49	Sutural stria complete to base; outer subhumeral stria complete	50
–	Sutural stria present only in apical 3/4, not reaching base (Fig. 7G) outer subhumeral stria present in apical 1/2 only	P. parana [11]
50	Outer subhumeral stria simple; mandibles untoothed; larger, rounder (Fig. 17E); widespread in South America	P. sphaericus [28]
–	Outer subhumeral stria with a short extension mediad along basal elytral margin; each mandible with strong basal tooth; more elongate (Fig. 9G); only known from Costa Rica	P. inbio [15]
51	Punctures of pronotum single, comprising ground punctation only (which may be dense and conspicuous; Fig. 9C); outer subhumeral stria interrupted at middle, inner present in apical 1/2	P. uniformis [13]
–	Punctures of pronotum ‘double’, comprising fine ground punctation and distinctly larger secondary punctation intermingled (e.g., Figs 9A, 19A); subhumeral striae varied	52
52	Pronotal secondary punctures denser in basal 1/2 of pronotum, much sparser anterad (Fig. 19A); all elytral striae complete, connected along apical margin; body large (~ 5 mm), subdepressed	P. conjunctus [31]
–	Pronotal secondary punctures, if conspicuous, not denser basally – may be uniform in density, or be denser in lateral third of disk; elytral striae not connected along apical margin; body size varied, but mostly < 4 mm	53
53	Pronotum and elytra similar in density of punctation	56
–	Pronotum much more coarsely punctate than elytra	54
54	Lateral submarginal pronotal stria present only as a short arc of punctures around anterior margin; body smaller; pronotum very coarsely punctate (Fig. 9A)	P. asperatus [12]
–	Lateral submarginal pronotal stria complete, close to margin; body larger; pronotum only moderately coarsely punctate	55
55	Prescutellar impression distinct, broadly oval, ~ 2 × width of scutellum; body more elongate, with sides weakly subparallel (Fig. 17C)	P. annulatus [27]
–	Prescutellar impression indistinct, at most a small vague depression immediately in front of scutellum; body rounded (Fig. 13E)	P. vazdemelloi [22]
56	Elytral striae three and four obliterated apically, stria five absent, and sutural stria barely visible at apex (Fig. 11E)	P. praedatoris [18]
–	Elytral stria all more or less complete; sutural stria reaching elytral base and connected to 4^th stria by basal arch	57
57	Median pronotal gland openings ~ 2/3 behind pronotal margin (Fig. 11A); frontal stria complete through median depression; frons without microsculpture; antennal club without basal setose patches	P. sculpturatus [16]
–	Median pronotal gland openings nearer halfway back from anterior margin (Fig. 11C); frontal stria obsolete in median depression, frons with distinct microsculpture; antennal club with two distinct dorsal and one ventral setal sensory patch basal to elongate median patch (Fig. 11C)	P. tunki [17]
58	Pronotal glands more than halfway back on pronotal disk; lateral pronotal stria complete	59
–	Pronotal glands ~ 1/3 from anterior margin; lateral pronotal stria usually abbreviated posteriorly (Figs 2B, 3C)	P. erwini [2]
59	Apices of inner elytral striae (3^rd-5^th and sutural striae) little more than series of disconnected punctures (Fig. 5A); first abdominal ventrite impunctate along anterior margin (Fig. 5B)	P. sparsus [5]
–	At least sutural stria and usually 5^th elytral stria normally impressed; first abdominal ventrite with row of punctures along anterior margin (e.g., Fig. 5D, F)	60
60	Outer subhumeral stria interrupted	61
–	Outer subhumeral stria complete	P. stellans [4]
61	Eighth sternite of male genitalia with dense apical setal fringe (Fig. 6A); prosternal keel striae enclosing longer, more distinctly triangular space	P. fimbriatus [3]
–	Eighth sternite of male genitalia with only ~ three setae at outer apical corners; prosternal keel striae enclosing rather short, narrow (especially basally) space	P. pretiosus [6]
62	Pronotum with secondary punctures mainly at sides	64
–	Pronotum with secondary punctures more uniformly distributed across disk	63
63	Pronotum with secondary punctures denser in basal 1/2, smoother anterad (Fig. 19A); complete 5^th elytral stria connected to complete sutural stria at base; body large (~ 4 mm), convex	P. fraternus [30]
–	Pronotum uniformly doubly punctate (Fig. 25A)	P. incongruens [40]
64	Anterior marginal pronotal stria entire (Fig. 23A)	P. gregarius [37]
–	Anterior marginal pronotal stria ‘broken’ behind eyes and briefly recurved posterad (Fig. 23C)	65
65	Lateral submarginal pronotal stria present only in anterior third; ground punctation of dorsum more conspicuous (Fig. 23E); frons with microsculpture within frontal depression; metaventrite impunctate	P. rudis [39]
–	Lateral submarginal pronotal stria complete; ground punctation of dorsum less conspicuous (Fig. 23C); frons lacking microsculpture; metaventrite usually with secondary punctures anteromediad the hind coxae (Fig. 23D)	P. praecisus [42]

Phelister blairi subgroup

This diverse subgroup, comprising 25 species, is defined primarily by genitalic characters, which we list below. There are also some external characters that are frequent if not ubiquitous across the group.

Genitalic characters:

Aedeagus rather broad, moderately flattened, rounded apically, narrowed to base
Medioventral process of tegmen usually present, non-acute, relatively basally situated (weak or lost in a few species)
Basal piece with apico-ventral margin acutely produced
Median lobe elongate (> 1/2 tegmen length), with short, differentiated basal apodemes
T10 partially to entirely fused (but never apically-only as in amazoniae subgroup)
Accessory sclerites nearly always present
S8 apically with conspicuous setae at apical corners
S9 (spiculum gastrale) generally with strong apical emargination and median keel

External characters

Antennal club elongate
Antennal club with basally expanded subapical annulus
Antennal club with median antennal annulus displaced apicad
Prosternal keel shelf-like
Prosternal lobe short
Prescutellar impression present, round to oval
Ventral tarsal setae numerous
Lateral submarginal pronotal stria usually present, often incomplete
Pronotal bead convex (if lateral submarginal stria present)

1. Phelister blairi Hinton, 1935

Figs 3A, B, 4E, F, Map 1

Phelister blairi Hinton, 1935: 61.

Type material

Holotype female: “Pará, Brazil.” / “June” / “Phelister blairi Type Hntn.” / “G.Lewis Coll. B.M.1926-369”, NHMUK.

Figure 3.

A, B Phelister blairi Lewis: A dorsal habitus B ventral habitus. C, D P. erwini: C dorsal habitus D ventral habitus E, F P. fimbriatus: E dorsal habitus F ventral habitus G, H P. stellans: G dorsal habitus H ventral habitus.

Other material

Brazil: Amapá, Serra do Navio (0.9833, -52), 1/28/90–2/2/90, FIT (CHND, 3ex.); Amapá, Serra Lombard, Limão (0, -51.2), 8/20/61, EXO-03427 (CHND, 1ex.); Amazonas, Reserva Ducke, 26 km NE Manaus, Plot B (-3, -59.94), February 1995, FIT, M.G.V. Barbosa, EXO-03426 (NHMUK, 1ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1985, FIT, EXO-03372 (CHND, 1ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), September 1984, FIT (CHND, 2ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), 9/26/86–10/6/86, FIT, EXO-03376 (CHND, 1ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), 11/13/87–12/2/87, FIT, EXO-03421 (CHND, 1ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), 3/29/89–4/6/89, FIT (CHND, 2ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), October 1986, FIT, EXO-03375 (CHND, 1ex.); Pará, Marajó-Breves (-6.26, -50.5333), 11/18/87–12/5/87, FIT (CHND, 5ex.); Pará, Mcpio. Jari, Pacanari (-0.65, -52.6667), 220 m, 3/21/11–4/2/11, Baited pitfalls, C.J. Marsh, EXO-03424 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), 7/10/85–7/29/85, FIT (CHND, 2ex.); Pará, Tucuruí (-3.75, -49.667), June 1985, FIT (CHND, 3ex.); French Guiana: Cayenne, 33.5 km S and 8.4 km NW of Hwy N2 on Hwy D5 (4.805, -52.4781), 30 m, 5/29/97–6/9/97, FIT, J. Ashe & R. Brooks, SM0131158 (SEMC, 1ex.); Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 8/20/10, FIT, SEAG, EXO-03365 (CHND, 1ex.); Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 10/22/10 and 1/25/11, FIT, SEAG (CHND, 2ex.); Rés. Natur. de la Trinité, (4.6883, -53.2833), 7/20/10, FIT, SEAG (CHND, 1ex.); Roura, 27.4 km SSE (4.7389, -52.2236), 280 m, 5/25/97–5/29/97, FIT, J. Ashe & R. Brooks, SM0096365 (SEMC, 1ex.); Saül, 7 km N, 1 km NW Les Eaux Claires, along Route de Bélizon trail (3.6628, -53.2219), 280 m, 6/4/97–6/8/97, FIT, J. Ashe & R. Brooks, SM0133772 (SEMC, 1ex.); Belvédère de Saül, point de vue (3.6228, -53.2094), 2/14/11, FIT, SEAG (CHND, 1ex.); Rés. Trésor (route de Kaw Pk18) (4.6105, -52.279), 225 m, 11/21/09, FIT, SEAG, EXO-03360 (CHND, 1ex.); Mont Tabulaire, Itoupé (3.022, -53.0842), 800 m, 3/17/10, FIT, SEAG (CHND, 5ex.); Mont Tabulaire, Itoupé (3.023, -53.0955), 570 m, 3/24/10, FIT, SEAG (CHND, 2ex.); Mont Tabulaire Itoupé (3.0303, -53.1067), 400 m, 3/17/10, FIT, SEAG, EXO-03362 (CHND, 1ex.); Mont Tabulaire Itoupé (3.023, -53.0955), 570 m, 3/17/10, FIT, SEAG, EXO-03361 (CHND, 1ex.); Montagne des Chevaux (4.7167, -52.4), 12/6/08–12/16/08, 1/10/09–1/18/09, 3/15/09, 4/11/09 and 1/31/11, FIT, SEAG (AKTC & CHND, 10ex.); Paracou (5.27, -52.92), November 1996, FIT, P.M. Hammond, EXO-03358 (NHMUK, 1ex.); Route Nac. 2, P.k. 47 (4.6333, -52.3667), 7/11/78, Piège + cad. de serpent (CHND, 2ex.); Guyana: Region 8, Iwokrama Forest, 26 km SW Kurupukari, Iwokrama Mt. (4.3339, -58.7883), 400 m, 5/23/01–5/25/01, FIT, R. Brooks, Z. Falin (SEMC, 2ex.); Region 8, Iwokrama Forest, 26 km SW Kurupukari, Iwokrama Mt. (4.3339, -58.7883), 600 m, 5/23/01–5/25/01, FIT, R. Brooks, Z. Falin, SM0565566 (SEMC, 1ex.); Region 8, Iwokrama Forest, Pakatau hills (4.7483, -59.0267), 70 m, 5/25/01–5/29/01, FIT, R. Brooks, Z. Falin, SM0569456 (SEMC, 1ex.); Peru: Cusco, Villa Carmen Fld Stn., 12.89250°S, 71.41917°W, 555 m, 28–30.V.2011, DJ Bennett, FIT (SEMC, 1ex.); Madre de Dios, Los Amigos Field Station, Manu, CICRA (-12.5624, -70.093), 288 m, 7/31/06–8/9/06, pitfall trap, terra firma forest, J. Jacobs, CASENT8123338 (CASC, 1ex.); Madre de Dios, Los Amigos Field Station, Manu, Maderero bamboo forest (-12.5458, -70.1149), 283 m, 1/2/07–1/11/07, pitfall trap, bamboo forest, J. Jacobs, CASENT 8123423 (CASC, 1ex.); Madre de Dios, Pantiacolla Lodge, Alto Madre de Dios R. (-12.655, -71.2317), 420 m, 11/14/07–11/19/07, FIT, D. Brzoska (SEMC, 9ex.); Madre de Dios, Pantiacolla Lodge, Alto Madre de Dios River (-12.6561, -71.2319), 400 m, 10/23/00–10/26/00, FIT, R. Brooks (SEMC, 3ex.); Madre de Dios, Rio Alto Madre de Dios, Pantiacolla Lodge (-12.655, -71.2317), 11/14/07–11/19/07, FIT, D. Brzoska (SEMC, 4ex.); Madre de Dios, CICRA Field Stn., ~ 2 km NW cafeteria res. plot, 12.55236°S, 70.10989°W, 295 m, Flight intrcept. 7–9.vi.2011, Chaboo Team (SEMC 2ex.); Suriname: Brokopondo, Brownsberg Nature Preserve, Witi Creek Trail (4.9486, -55.1814), 340 m, 6/23/99–6/25/99, FIT, Z. Falin, A. Gangadin, H. Hiwat, SM0166833 (SEMC, 1ex.); Brokopondo, Ston Eiland Eco Resort nr. Brownsberg (4.9833, -55.1333), 2/10/10–1/13/10, FIT, C. Gillet, P. Skelley, W. Warner (FSCA, 3ex.); Commewijne, Akintosoela, 32 km SE Suriname River Bridge, road to Redi Doti (5.2714, -54.9208), 40 m, 6/29/99–7/3/99, FIT, Z. Falin, B. DeDijn, A. Gangadin, SM0176672 (SEMC, 1ex.); Marowijne, Palumeu (3.3489, -55.4383), 160 m, 7/9/99, FIT, Z. Falin (CMNC, 2ex.); Marowijne, Palumeu, (3.3489, -55.4383), 160 m, 7/7/99–7/8/99, FIT, Z. Falin, SM0176368 (SEMC, 1ex.); Pará, Carolina Creek, 11 km SE Zanderij Airport (5.3933, -55.1581), 30 m, 6/19/99–6/20/99, FIT, Z. Falin, A. Gangadin, SM0165187 (SEMC, 1ex.); Pará, nr. Overbridge River Resort (5.53, -55.058), 2/15/10–2/18/99, FIT, C. Gillet, P. Skelley, W. Warner (FSCA, 2ex.); Pará, nr. Overbridge at 5.5195, -55.0695, 2/10/10–2/14/10, FIT, W.B. Warner (AKTC & WBWC, 15ex.); Saramacca, West Suriname Road, 139 km WSW Zanderij Airport (5.15, -56.0667), 40–50 m, 6/10/99–6/14/99, FIT, Z. Falin, B. DeDijn, SM0178423 (SEMC, 1ex.); Sipaliwini, CI-RAP Surv. Camp 1: on Kutari River (-2.1753, -56.7874), 228 m, 8/19/10–8/24/10, FIT, Larsen & Short (SEMC, 6ex.); Sipaliwini, CI-RAP Surv. Camp 2: Sipaliwini River (-2.1753, -56.7874), 210 m, 8/27/10–9/1/10, FIT, Larsen & Short, EXO-03369 (SEMC, 4ex.); Sipaliwini, CI-RAP Surv. Camp 3: Wehepai SE Kwamala (2.3629, -56.6977), 237 m, 9/3/10–9/7/10, FIT, Larsen & Short (SEMC, 7ex.); Sipaliwini, CI-RAP Surv. Camp 1: upper Palumeu River (2.4770°N, 55.6294°W), 275 m, FIT, 3/10/12–3/16/12, A.E.Z. Short (AKTC & SEMC, 13ex.); Sipaliwini, CI-RAP Surv. Camp 4: on lower Kasikasima River (2.9773, -55.3850), 200 m, 3/20/12–3/25/12, FIT, T. Larsen (AKTC & SEMC, 6ex.).

Map 1.

Collecting records for Phelister blairi.

Diagnostic description

Length: 1.50–1.65 mm (avg. 1.62 mm); width: 1.22–1.42 mm (avg. 1.36 mm). Body small, elongate oval, convex, rufescent, with ground punctation moderately conspicuous; frons and epistoma somewhat narrow, deeply depressed along midline, sparsely but conspicuously punctate; supraorbital stria present, narrowly separated from sides of frontal stria, which is complete across depression; epistoma raised at sides; labrum emarginate and subcarinate apically; mandibles lacking conspicuous basal teeth; antennal club elongate with conspicuous setose patch on dorsal surface; prescutellar impression of pronotum ovoid to weakly acuminate at front, approximately equal in width to scutellum; pronotal disk with conspicuous secondary punctures in lateral thirds, more densely to front; median pronotal gland openings distinctly annulate, ~ 1/5 behind anterior margin; marginal pronotal stria complete laterally, broken with inner ends recurved briefly behind eyes; submarginal pronotal stria in apical 1/2 only, weakly impressed, crenulate, just turning anterior corner; elytron with single, complete epipleural stria; outer subhumeral stria present in apical one-third only, inner absent; dorsal striae 1–4 complete, 4^th arched to sutural, 5^th present in apical 1/2, sutural stria present in apical 2/3; propygidium with dense secondary punctures, those of pygidium smaller and sparser; prosternal keel emarginate at base, striae united along base, enclosing a triangle ~ 3/4 length of keel, with secondary striae along basal 1/2; prosternal lobe short, rounded, with complete marginal stria; mesoventrite produced, with complete marginal stria continued at sides by postmesocoxal stria, which ends freely at middle of lateral portion of metaventrite; mesometaventral stria angulate at middle, reaching middle of mesoventrite, continued at sides by lateral metaventral stria to middle of metacoxa; middle portion of metaventrite impunctate; 1^st abdominal ventrite with secondary punctures along anterior margin, with incomplete lateral stria along inner margin of metacoxa; protibia with outer margin rounded, weakly dentate, with five or six marginal spines; meso- and metatibiae slender, mesotibia with rather robust marginal spines, those of metatibia fine and restricted to apical one-third. Male: basal piece ~ 1/3 length of tegmen; tegmen with sides evenly rounded, apices slightly separated, weak medioventral process present in basal 1/3; median lobe ~ 1/2 tegmen length, basal apodemes thin.

Distribution

This species is most commonly found in northeastern South America, including Pará, Brazil, French Guiana, and Suriname. We have also seen specimens from Peru, but surprisingly not Ecuador.

Remarks

Among the species treated here, P. blairi is best recognized by its small body size, median pronotal gland openings located close to anterior pronotal margin (Fig. 3A), broken anterior marginal pronotal stria, and posteriorly obsolete lateral submarginal pronotal stria. It also has a relatively small area (shortened) enclosed by its prosternal keel striae. Phelister blairoides (#56, below) has similarly anterior pronotal gland openings, but has the lateral submarginal pronotal stria complete, and has the outer subhumeral elytral stria present basally as well as apically (though interrupted at middle). Phelister blairoides is also ~ 2 × as large. Although both these species are widespread and somewhat variable across their ranges, these differences are consistent. This species is also very similar to the following, P. erwini, differing principally by the more anteriorly located pronotal gland openings.

Most specimens have been collected by flight interception traps, with a few taken in carrion and dung baited pitfalls.

2. Phelister erwini sp. nov.

http://zoobank.org/E1D62B16-0AED-4761-A124-F709E8B17D77

Figs 2B, 3C, D, 4G, H, Map 2

Type material

Holotype male: “Ecuador: Napo, mid.Rio Tiputini, Yasuní Res. Stn. 0°40.5'S, 76°24'W, FIT#3. 18–23 June 1999 AKT#016 A.Tishechkin” / “LSAM 0045157” / “Phelister sp. #7. Hist 148 Yasuní NP Inventory A.K. Tishechkin det. 2010” (FMNH). Paratypes (191): Ecuador: Orellana, Est. Biodiv. Tiputini (-0.6333, -76.0383), 220 m, 9/5/00–9/25/00, D. Inward & K. Jackson (NHMUK, 8ex.); Orellana, Est. Biodiv. Tiputini (-0.6376, -76.1499), 6/2/11–6/9/11, FIT, M. Caterino & A. Tishechkin (MSCC, 28ex.); Orellana, Est. Biodiv. Tiputini (-0.6376, -76.1499), 6/9/11, Dead Ec. hamatum bait, M. Caterino & A. Tishechkin, EXO-00608 (MSCC, 1ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 6/17/99–8/4/99, FIT, C. Carlton & A. Tishechkin (LSAM, 95ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 7/18/99, Eciton burchelli colony EC#21, Statary bivouac site just after emigration, A. Tishechkin (LSAM, 3ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 7/22/99, Eciton burchelli colony EC#23, nomadic bivouac site just after emigration, A. Tishechkin, LSAM 0045288 (LSAM, 1ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 7/29/99, Eciton burchelli colony EC#27, refuse deposit statary phase, A. Tishechkin, LSAM 0045289 (LSAM, 1ex.); Orellana, Est. Cientifica Yasuní (-0.6744, -76.6472), 215 m, 9/5/99–9/10/99, FIT, primary forest, E. Riley (LSAM & TAMU, 49ex.); Orellana, Payamino Research Station (-0.4933, -77.2914), 300 m, 7/30/07–8/12/07, FIT, Tropical Rainforest, CPDT Gillett (NHMUK, 2ex.); Orellana, Res. Ethnica Waorani, 1 km S Onkone Gare Camp, Trans. Ent. (0.6528, -76.4333), 220 m, 1/24/94, Insecticidal fogging, mostly bare green leaves, some with covering of lichenous or bryophytic plants in terra firme forest, T.L. Erwin, EXO-03445 (USNM, 1ex.); Orellana, Res. Ethnica Waorani, 1 km S Onkone Gare Camp, Trans. Ent. (-0.6528, -76.4333), 220 m, 10/7/94, Insecticidal fogging, mostly bare green leaves, some with covering of lichenous or bryophytic plants in terra firme forest, T.L. Erwin, EXO-03446 (USNM, 1ex.); Orellana, nr. Tributary R. Tiputini, 6/25/96–6/30/96, FIT, A. Cognato, EXO-03443 (MSCC, 1ex.).

Figure 4.

Male genitalia A–D Phelister trigonisternus Hinton: A tergite 8 B sternite 8 C tergites 9 & 10 D sternite 9 E, F Phelister blairi Lewis: E aedeagus, dorsal F aedeagus, lateral G, H P. erwini: G aedeagus, dorsal H aedeagus, lateral.

Other material

Brazil: Mato Grosso, Mpio. Claudia (-11.4083, -55.325), 10/17/10–10/27/10, FIT, A.F. Oliveira (CEMT, 3ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau (-9.815, -58.2858), 12/15/10–12/18/10, FIT, F.Z. Vaz-de-Mello & A.F. Oliveira (CEMT, 4ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Mata Norte (-9.8192, -58.26), 12/8/10–12/14/10, FIT, F.Z. Vaz-de-Mello (CEMT, 6ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), 4/3/09, FIT, F.Z. Vaz-de-Mello (CEMT, 10ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), October 2009, FIT, F.Z. Vaz-de-Mello (CEMT, 8ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Prainha (-9.86, -58.215), September 2009, FIT, R.V. Nunes, EXO-03456 (CEMT, 1ex.); Mato Grosso, Mpio. Querencia, Fazenda São Luiz (-12.597, -52.3749), February 2009, FIT, R. Andrade (CEMT, 4ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1985, FIT (CHND, 3ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), 3/29/89–4/6/89, FIT (CHND, 2ex.); Pará, Ilha Arapiuns (-2.4, -54.95), 12/30/08–12/31/08, FIT (CHND, 3ex.); Pará, Marajó-Breves (-0.8833, -50.5333), 11/18/87–12/5/87, FIT, EXO-03463 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), June 1985, FIT, EXO-03462 (CHND, 1ex.); Rio de Janeiro, 17 km E Nova Friburgo (-22.3844, -42.5583), 750 m, 1/21/00, FIT, secondary mount. Atlantic for., F. Génier & S. Ide (CMNC, 3ex.); Rio de Janeiro, 17 km E Nova Friburgo (-22.3844, -42.5583), 750 m, 1/23/00, FIT, secondary mount. Atlantic for., F. Génier & S. Ide, EXO-03451 (CMNC, 1ex.); Rio de Janeiro, Nova Friburgo (-22.2667, -42.5333), 10/26/09–10/31/09, FIT (CHND, 13ex.); São Paulo, Boracéia Biol. Station, nr. Salesópolis (-23.6333, -45.8667), 11/23/08–11/30/08, FIT, P.C. Grossi, EXO-03453 (CHND, 1ex.); Colombia: Vaupes, Est. Biol. Caparu, Rio Apoporis (-1.1, -69.5), 9/27/95–12/1/95, FIT, Black-water terrace forest on sandy soils, B. Gill (AKTC, 56ex.); Vaupes, Parco Nac. Mosiro-Itajura (Caparu) Centro Ambiental (-1.0667, -69.5167), 60 m, 1/20/03–1/30/03, FIT, D. Arias & M. Sharkey (AKTC, 55ex.); Ecuador: Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 7/27/08–8/3/08, FIT, A.K.Tishechkin (AKTC & LSAM, 114ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 8/3/08–8/6/08, FIT, LSAM Team (LSAM, 21ex.); Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/10/08–7/26/08, FIT, A. Tishechkin (AKTC & LSAM, 228ex.); Panama: Darien, Cana Biological Station, Serrania de Pirre (7.755, -77.685), 1200 m, 6/4/96–6/9/96, FIT, J. Ashe & R. Brooks (SEMC, 10ex.); Peru: Cusco, Villa Carmen Fld Stn., 12.89221°S, 71.41946°W, 555 m, 20–30.V.2011, DJ Bennett, FIT (SEMC, 22 ex.); Cusco, Villa Carmen Fld Stn., 12.87753°S, 71.40153°W, 555–1000 m, 20–30.V.2011, DJ Bennett, misc. hand collecting (SEMC, 8ex.); Cusco, Villa Carmen Fld Stn., 12.89250°S, 71.41917°W, 555 m, 26–28.V.2011, DJ Bennett, FIT (SEMC, 1ex.); Huanuco, Tingo Maria-Monzon Rd. S of Agua Blanca (-9.2917, -76.08), 1000 m, 10/12/99–10/13/99, FIT, R. Brooks, SM0144307 (SEMC, 1ex.); Junín, ~ 16 km NW Satipo, Rio Venado (-11.1989, -74.7705), 1110 m, 2/20/10–2/22/10, A.V. Petrov, EXO-03486 (AKTC, 1ex.); Junín, Sector San Isidro (-11.2418, -74.6663), 730 m, 4/12/09–4/13/09, FIT, treefall, A.V. Petrov, EXO-03485 (AKTC, 1ex.); Junín, 11 km NE Puerto Ocopa, Los Olivos (-11.05, -74.2587), 1200 m, 3/25/09–4/2/09, FIT, A. Tishechkin (AKTC, 36ex.); Junín, ~ 15 km NW Satipo, Rio Venado at 11°11.71'S, 74°46.12'W, 1150 m, window trap, 20–24.v.2012, A. V. Petrov (AKTC, 2ex.); Junín, ~ 15 km NW Satipo, Rio Venado (-11.1979, -74.77), 1100 m, 2/20/13, window trap, A.V. Petrov (AKTC, 4ex.); Junín, Rio Venado at 11°11'40"S, 74°46'8"W, 1195 m, window trap, 26.i.2019, A. V. Petrov (AKTC, 2ex.); Loreto, 1.5 km N Teniente Lopez (-2.5943, -76.1153), 210–240 m, 7/18/93–7/26/93, FIT, R. Leschen (SEMC, 34ex.); Loreto, 1.5 km N Teniente Lopez (-2.5943, -76.1153), 210–240 m, 7/18/93, FIT, R. Leschen (SEMC, 4ex.); Loreto, 68 km SW Iquitos to Nauta, Rio Itaya (-4.1833, -73.4167), 110 m, 2/26/08–2/30/2008, A.V. Petrov, EXO-03482 (AKTC, 1ex.); Loreto, Campamento San Jacinto (-2.3125, -75.8628), 175–215 m, 7/11/93, FIT, R. Leschen, EXO-03467 (SEMC, 1ex.); Loreto, Iquitos (-3.74, -73.27), 90 m, 5/5/92, FIT, J. Danoff-Berg (SEMC, 3ex.); Loreto, Iquitos – Nauta rd., km 58, Rio Itaya (-4.2563, -73.4675), 120 m, 5/5/09–5/9/09, FIT, entrance into Eciton burchelli statary bivouac in a hollow treee, A.V. Petrov (AKTC, 8ex.); Loreto, Iquitos, Jenero Herbera (-4.9, -73.6), October-November 1988, FIT, G. Couturier, EXO-03479 (CHND, 1ex.); Loreto, km 63, rd. Iquitos – Nauta, Rio Itaya (-4.2534, -73.4346), 140 m, 1/9/11–1/13/11, A.V. Petrov, EXO-03483 (AKTC, 1ex.); Madre de Dios, Manu, Los Amigos Field Station (-12.5624, -70.093), 288 m, 7/31/06–8/9/06, pitfall trap, CICRA terra firma forest, J. Jacobs, CASENT 8123337 (CASC, 1ex.); Madre de Dios, Pakitza Bio. Stn., Reserved Zone, Manu National Park, Castanal Trail (-11.9447, -71.2833), 317 m, 10/15/00–10/16/00, FIT, R. Brooks, SM0271786 (SEMC, 1ex.); Madre de Dios, Amazonas Lodge, N Atalaya (-12.87, -71.3767), 480 m, 11/10/07–11/13/07, FIT, D. Brzoska, SEMC0870245 (SEMC, 1ex.); Madre de Dios, Pantiacolla Lodge, 2–7 km NW El Mirador Trail, Alto Madre de Dios River (-12.6528, -71.2578), 450–700 m, 10/23/00–10/26/00, FIT, R. Brooks (SEMC, 8ex.); Madre de Dios, Pantiacolla Lodge, 8 km NW El Mirador Trail, Alto Madre de Dios River (-12.6417, -71.2781), 800 m, 10/23/00–10/26/00, FIT, R. Brooks (SEMC, 9ex.); Madre de Dios, Pantiacolla Lodge, Alto Madre de Dios R. (-12.655, -71.2317), 420 m, 11/14/07–11/19/07, FIT, D. Brzoska (SEMC, 36ex.); Madre de Dios, Pantiacolla Lodge, Alto Madre de Dios River (-12.6561, -71.2319), 400 m, 10/23/00–10/26/00, FIT, R. Brooks (SEMC, 3ex.).

Map 2.

Collecting records for Phelister erwini.

Diagnostic description

Length: 1.54–1.81 mm (avg. 1.63 mm); width: 1.30–1.58 mm (avg. 1.40 mm). This species is extremely similar to P. blairi, but differs consistently in a few characters: pronotal gland openings at least 1/4 removed from the anterior pronotal margin, more typically ~ 1/3 removed; anterior portion of marginal pronotal stria rarely broken, generally subangulate behind eye, but without recurved ends; lateral submarginal pronotal stria slightly more deeply depressed. Male: basal piece ~ 1/3 length of tegmen; tegmen rather flat, with sides rounded, widest in basal 1/3, apices slightly separated, medioventral process long, projecting in basal 1/3; median lobe ~ 1/2 tegmen length, basal apodemes evenly narrowed to tips.

Etymology

We dedicate this species to the renowned coleopterist, Dr. Terry Erwin, who unfortunately passed away early in 2020. His groundbreaking surveys of neotropical beetles, outstanding contributions to ground beetle systematics, and important contributions to the cause of insect biodiversity conservation have been a great inspiration to us, and many, many others.

Remarks

This species shows strong similarity to P. blairi, above; their almost completely non-overlapping distributions suggest that the two are sister taxa (and they are resolved as such in our analyses). The pronotal gland openings in P. erwini are nearly always ~ 1/3 removed from the anterior pronotal margin, whereas those of P. blairi are much closer to the anterior margin (see Fig. 3C and 3A, respectively). The two consistently differ near P. blairi’s type locality (Pará, Brazil), as well at another point of sympatry (southeastern Peru), but some variation in gland opening location and sculpturing (pronotal and pygidial) make the two difficult to distinguish throughout their ranges and in all specimens.

A number of specimens of P. erwini have been collected in loose association with neotropical army ants (Eciton spp.), suggesting some degree of myrmecophily. However, the vast majority of specimens of this abundant species have been collected with flight interception traps, so other possible associations cannot be assessed.

Distribution

This is an abundant and widely distributed species, known from Panama, Amazonian regions of Colombia, Ecuador, Peru, and Brazil, as well as southeastern coastal Brazil.

Figure 5.

A, B Phelister sparsus: A dorsal habitus B ventral habitus C, D P. pretiosus: C dorsal habitus D ventral habitus E–G P. trigonisternus: E dorsal habitus F ventral habitus G frons and labrum showing labral fovea.

3. Phelister fimbriatus sp. nov.

http://zoobank.org/2A6CB680-62C2-403C-B923-A1D7972C47AC

Figs 3E, F, 6A–C, Map 3

Type material

Holotype male: “French Guiana Roura (8.4km SSE), 200 m 4°40'41"N, 52°13'25"W, 29.v–10.vi.1997, J.Ashe & R.Brooks, FG1AB97 #182, ex: flight int. trap” / “Caterino/Tishechkin Exosternini Voucher EXO-02927” (CMNC). Paratypes (17 – confirmed males only): French Guiana: Belvédère de Saül, point de vue (3.6228, -53.2094), 1/31/11 FIT, SEAG (CHND, 1ex.); Belvédère de Saül, point de vue (3.6228, -53.2094), 2/7/11, FIT, SEAG (CHND, 1ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 11/3/09, FIT, SEAG (CHND, 1ex.); Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 9/9/10, 9/22/10, FIT, SEAG (AKTC & CHND, 3ex.); Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 1/25/11, FIT, SEAG (AKTC & CHND, 2ex.); Montagne des Chevaux (4.7167, -52.4), 12/16/08, FIT, SEAG (AKTC, 1ex.); Montagne des Chevaux (4.7167, -52.4), 12/6/08–12/16/08, 4/11/09, FIT, SEAG (AKTC & CHND, 2ex.); Montagne des Chevaux (4.7167, -52.4), 2/23/09, FIT, SEAG (CHND, 1ex.); Suriname: Brokopondo, Ston Eiland Eco Resort nr. Brownsberg (4.9833, -55.1333), 2/10/10–2/13/10, FIT, C. Gillet, P. Skelley, W. Warner, EXO-02929 (FSCA, 1ex.); Sipaliwini, CI-RAP Surv. Camp 2: Sipaliwini River (-2.1753, -56.7874), 210 m, 8/27/10–9/1/10, FIT, Larsen & Short, EXO-02928 (SEMC, 1ex.); Brazil: Amapá, Serra do Navio (0.9833, -52), 5/1/91–5/14/91, FIT, EXO-02935 (CHND, 1ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1985, FIT (CHND, 1ex.); Pará, Marajó-Breves (-0.8833, -50.5333), 11/18/87–12/5/87, FIT (CHND, 1ex.).

Figure 6.

Male genitalia A–C Phelister fimbriatus: A sternite 8 B aedeagus, dorsal C aedeagus, lateral D, E P. stellans: D aedeagus, dorsal E aedeagus, lateral F, G P. sparsus: F aedeagus, dorsal G aedeagus, lateral H, I P. pretiosus: H Aedeagus, dorsal I Aedeagus, lateral J, K P. trigonisternus: J aedeagus, dorsal K aedeagus, lateral.

Other material

French Guiana: Belvédère de Saül, point de vue (3.6228, -53.2094), 1/17/11, 1/31/11 and 2/7/11, FIT, SEAG (CHND, 2ex.); Paracou (5.27, -52.92), November 1996, FIT, P.M. Hammond, EXO-02926 (NHMUK, 1ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 11/3/09, FIT, SEAG (CHND, 1ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 1/28/10, FIT, SEAG (CHND, 3ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 2/19/10, FIT, SEAG, EXO-02920 (CHND, 1ex.); Rés. Trésor (route de Kaw Pk18) (4.6105, -52.279), 225 m, 11/6/09, FIT, SEAG (CHND, 2ex.); Mont Tabulaire, Itoupé (3.023, -53.0955), 570 m, 3/24/10, FIT, SEAG, EXO-02923 (CHND, 1ex.); Mont Tabulaire Itoupé (3.0303, -53.1067), 400 m, 3/17/10, FIT, SEAG (CHND, 5ex.); Montagne des Chevaux (4.7167, -52.4), 8/9/09, FIT, SEAG, EXO-02925 (CHND, 1ex.); Montagne des Chevaux (4.7167, -52.4), 5/22/10, FIT, SEAG, EXO-02945 (CHND, 1ex.); Brazil: Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Mata Norte (-9.8192, -58.26), 12/8/10–12/14/10, FIT, F.Z. Vaz-de-Mello (CEMT, 2ex.); Mato Grosso, Mpio. Querencia, Fazenda São Luiz (-12.597, -52.3749), February 2009, FIT, R. Andrade, EXO-02932 (CEMT, 1ex.); Mato Grosso, Mpio. Tangara da Serra (-14.3617, -57.6717), 580 m, 1/17/10–2/3/10, FIT, R.S. Silva, EXO-02933 (CEMT, 1ex.); Mato Grosso, Mun. Diamantino. Faz. São João (-14.2361, -56.1364), 400 m, 1/11/01, FIT, primary gallery for., Génier & Vaz-de-Mello, EXO-00364 (CMNC, 1ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1985, FIT (CHND, 3ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), October, 1984, FIT, EXO-02936 (CHND, 1ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), November 1984, FIT, EXO-02937 (CHND, 1ex.); Pará, Marajó-Breves (-0.8833, -50.5333), 11/18/87–12/5/87, FIT (CHND, 2ex.); Pará, Tucuruí (-3.75, -49.667), 12/9/85–12/17/85, FIT (CHND, 4ex.); Pará, Tucuruí (-3.75, -49.667), 11/28/89–12/11/89, FIT (CHND, 2ex.); Colombia: Vaupes, Parco Nac. Mosiro-Itajura (Caparu) Centro Ambiental (-1.0667, -69.5167), 60 m, 1/20/03–1/20/03, FIT, D. Arias & M. Sharkey (MSCC, 2ex.); Ecuador: Orellana, Est. Biodiv. Tiputini (-0.6376, -76.1499), 6/2/11–6/9/11, FIT, M. Caterino & A. Tishechkin (MSCC, 2ex.); Orellana, Est. Cientifica Yasuní (-0.6744, -76.6472), 215 m, 9/5/99–9/10/99, FIT, primary forest, E. Riley (TAMU, 9ex.); Peru: Loreto, Campamento San Jacinto (-2.3125, -75.8628), 175–215 m, 7/11/93, FIT, R. Leschen, EXO-02930 (SEMC, 1ex.); Madre de Dios, CICRA Field Stn., ~ 2 km NW cafeteria res. plot. 12.55236°S, 70.10989°W, 295 m, Flight intrcept. 7–9.vi.2011, Chaboo Team (SEMC); Marowijne, Palumeu, (3.3489, -55.4383), 160 m, 7/7/99–7/8/99, FIT, Z. Falin, SM0176323 (SEMC, 1ex.); Region 8, Iwokrama Forest, Pakatau hills (4.7483, -59.0267), 70 m, 5/25/01–5/29/01, FIT, R. Brooks, Z. Falin (SEMC, 2ex.); Saramacca, West Suriname Road, 145 km WSW Zanderij Airport (5.1517, -56.1456), 50 m, 6/10/99–6/14/99, FIT, Z. Falin, B. DeDijn, SM0179990 (SEMC, 1ex.); Sipaliwini, CI-RAP Surv. Camp 4: on lower Kasikasima River (-2.9773, -55.3850), 200 m, 3/20/12–3/25/12, FIT, T. Larsen (SEMC, 1ex.).

Map 3.

Collecting records for Phelister fimbriatus.

Diagnostic description

Length: 1.54–1.81 mm (avg. 1.74 mm); width: 1.38–1.58 mm (avg. 1.50 mm). Body elongate oval, widest behind elytral humeri, rufescent, with ground punctation fine; frons depressed along midline; frontal stria fine but complete within median depression; epistoma with raised edges along sides and front; labrum rather narrow, emarginate & weakly subcarinate along apical margin; mandibles lacking basal teeth; prescutellar impression large, semicircular, ~ 3 × width of scutellum; median pronotal gland openings conspicuous, annulate, ~ 3/4 behind anterior margin; lateral thirds of pronotal disk (laterad a longitudinal line drawn through the gland opening) abruptly more coarsely punctate, secondary punctures varied in size and density; marginal pronotal stria complete along lateral and anterior margins; submarginal stria complete, well-impressed along sides, just turning anterior corner; elytron with single, complete epipleural stria; outer subhumeral stria present at base and apex but usually interrupted at middle; inner subhumeral stria absent; dorsal striae 1–4 complete, 4^th arched to sutural, 5^th present in apical 1/2, sutural stria slightly longer; propygidium with moderately coarse secondary punctation, that of pygidium sparser; prosternal keel emarginate at base, striae separate at base, converging, united anteriorly; prosternal lobe slightly narrowed, with marginal stria complete, slightly removed from the margin; mesoventrite produced, with complete marginal stria continued at sides by postmesocoxal stria ending at middle of lateral portion of metaventrite; mesometaventral stria angulate at middle, crenulate, reaching middle of mesoventrite, continued at sides by lateral metaventral stria, reaching inner 1/3 of metacoxa; 1^st abdominal ventrite with incomplete lateral stria along inner margin of metacoxa; metaventrite lacking secondary punctation; 1^st abdominal ventrite with secondary punctures along anterior margin; protibia with outer margin weakly dentate, with five or six robust marginal spines; meso- and metatibiae slender, the mesotibia with ~ five spines along outer margin, metatibia with fewer marginal spines restricted to apical 1/2. Male: S8 with conspicuous apical fringe; aedeagus with basal piece ~ 1/4 length of tegmen; tegmen with sides subparallel to near apex, apex abruptly narrowed, weakly curved in lateral aspect; medioventral process present in basal 1/3; median lobe ~ ½ tegmen length, basal apodemes short, thin.

Etymology

We name this species for the distinctive marginal fringe on the eighth sternite of the male genitalia.

Remarks

While this species shares a lot of its characters with various others in this group, the combination of having its outer subhumeral stria usually interrupted at middle, having ‘normal’ (not scalloped) protibiae, and having the lateral thirds of the pronotal disk quite distinctly more strongly punctate than the middle third (Fig. 3E) is unique. It is particularly similar to the following species (P. stellans), but it differs from that one in having the arch of 4^th dorsal stria a little narrower, and the 5^th and sutural striae a little shorter. These seemingly insubstantial differences are backed up by a remarkable difference in the male 8^th sternite (Fig. 6A), which has a long apical fringe; the 8^th sternite of P. stellans has at most a few setae at the outer corners. We have restricted the type series of both species to males where identity could be confirmed by genitalia.

Specimens of this species have only been collected using flight interception traps.

Distribution

This species is known from the Guianas, as well as Amazonian Brazil, Peru, and Ecuador.

4. Phelister stellans sp. nov.

http://zoobank.org/F379FB75-09EC-4082-B38C-B18C41ACCAA9

Figs 3G, H, 6D, E, Map 4

Type material

Holotype male: “Peru: Loreto Prov. Iquitos, 90 m, 5 May 1992, J. Danoff-Berg(sic) ex. Flight intercept trap” / “SEMC0903641” (SEMC). Paratypes (23 – confirmed males only): Peru: Cusco, Villa Carmen Fld Stn., 12.89250°S, 71.41917°W, 555 m, 28–30.V.2011, DJ Bennett, FIT (SEMC, 1ex.); Cusco, Villa Carmen Fld Stn., 12.89221°S, 71.41946°W, 555 m, 20–30.V.2011, DJ Bennett, FIT (SEMC, 5ex); Loreto, Campamento San Jacinto (-2.3125, -75.8628), 175–215 m, 7/10/93, FIT, R. Leschen, EXO-02885 (SEMC, 1ex.); Loreto, Iquitos (-3.74, -73.27), 90 m, 5/7/92, FIT, J. Danoff-Berg (SEMC, 1ex.); Junín, 11 km NE Puerto Ocopa, Los Olivos (-11.05, -74.2587), 1200 m, 3/23/09–3/24/09, FIT, A. Tishechkin, EXO-00626 (AKTC, 1ex.); Madre de Dios, CICRA Field Stn., ~ 2 km NW cafeteria res. plot. 12.55236°S, 70.10989°W, 295 m, Flight intrcept. 9–13.vi.2010, Chaboo Team (SEMC, 5ex.); Madre de Dios, Pantiacolla Lodge, Alto Madre de Dios R. (-12.655, -71.2317), 420 m, 11/14/07–11/19/07, FIT, D. Brzoska (SEMC, 1ex.); Ecuador: Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 7/28/08–7/31/08, FIT, A.K.Tishechkin, EXO-02906 (AKTC, 1ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 7/28/08–8/3/08, FIT, A.K.Tishechkin (AKTC & LSAM, 3ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 8/3/08–8/6/08, FIT, LSAM Team (AKTC & LSAM, 3ex.); Orellana, Est. Cientifica Yasuní (-0.6744, -76.6472), 215 m, 9/5/99–9/10/99, FIT, primary forest, E. Riley (TAMU, 1ex.).

Map 4.

Collecting records for Phelister stellans (stars), P. sparsus (white circles).

Other material

Peru: Cusco, Villa Carmen Fld Stn., 12.89250°S, 71.41917°W, 555 m, 28–30.V.2011, DJ Bennett, FIT (SEMC, 3ex.); Cusco, Villa Carmen Fld Stn.,12.89221°S, 71.41946°W, 555 m, 20–30.V.2011, DJ Bennett, FIT (SEMC, 2ex); Junín, 11 km NE Puerto Ocopa, Los Olivos (-11.05, -74.2587), 1200 m, 3/28/09–3/30/09, FIT, A. Tishechkin (AKTC, 2ex.); Loreto, 1.5 km N Teniente Lopez (-2.5943, -76.1153), 210–240 m, 7/23/93, FIT, R. Leschen (SEMC, 3ex.); Loreto, Iquitos (-3.74, -73.27), 90 m, 5/5/92, FIT, J. Danoff-Berg (SEMC, 7ex.); Madre de Dios, CICRA Field Stn., ~ 2 km NW cafeteria res. plot. 12.55236°S, 70.10989°W, 295 m, Flight intrcept. 9–13.vi.2010, Chaboo Team (SEMC, 2ex.); Madre de Dios, CICRA Field Stn., ~ 2 km NW cafeteria res. plot. 12.55201°S, 71.10991°W, 295 m, Flight intrcept. 9–11.vi.2010, Chaboo Team (SEMC, 1ex.); Madre de Dios, CICRA Field Stn., ~ 2 km NW cafeteria res. plot. 12.55212°S, 70.10921°W, 295 m, Flight intrcept. 9–11.vi.2010, Chaboo Team (SEMC, 1ex.); Brazil: Amapá, Serra do Navio (0.9833, -52), 5/1/91–5/14/91, FIT, EXO-02899 (CHND, 1ex.); Mato Grosso, Mpio. Claudia (-11.4083, -55.325), 10/17/10–10/27/10, FIT, A.F. Oliveira, EXO-02903 (CEMT, 1ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), December 2010, FIT, F.Z. Vaz-de-Mello (CEMT, 3ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), October 2009, FIT, F.Z. Vaz-de-Mello, EXO-02902 (CEMT, 1ex.); Mato Grosso, Mpio. Diamantino, Vale da Solidão (-14.3638, -56.123), 640 m, February 2009, FIT, D.C.T. Oliveira (CEMT, 2ex.); Mato Grosso, Mun. Diamantino, Faz. São João (-14.2361, -56.1364), 400 m, 1/13/01, FIT, primary gallery for., Génier & Vaz-de-Mello, EXO-02900 (CMNC, 1ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1984, FIT, EXO-02890 (CHND, 1ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1985, FIT (CHND, 3ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), September 1984, FIT (CHND, 2ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), October, 1984, FIT (CHND, 6ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), November 1984, FIT (CHND, 2ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), October, 1985, FIT, EXO-02896 (CHND, 1ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), October, 1986, FIT, EXO-02898 (CHND, 1ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), March 1985, FIT (CHND, 2ex.); Pará, Jacareacanga (-6.22, -57.76), December 1968, M. Alvarenga, EXO-02889 (DZUP, 1ex.); Pará, Tucuruí (-3.75, -49.667), 12/9/85–12/17/85, FIT, EXO-02897 (CHND, 1ex.); Colombia: Vaupes, Parco Nac. Mosiro-Itajura (Caparu), Centro Ambiental (-1.0667, -69.5167), 60 m, 1/20/03–1/30/03, FIT, D. Arias & M. Sharkey (AKTC, 10ex.); Ecuador: Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 7/28/08–7/31/08, FIT, EXO-02906 (AKTC, 1ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 7/28/08–7/31/08, FIT, A.K.Tishechkin (AKTC, 1ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 8/3/08–8/6/08, FIT, LSAM Team (AKTC & LSAM, 3ex.); Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/11/08–7/24/08, FIT, A. Tishechkin (AKTC & LSAM, 6ex.); Orellana, Est. Cientifica Yasuní (-0.6744, -76.6472), 215 m, 9/5/99–9/10/99, FIT, primary forest, E. Riley (TAMU, 4ex.); French Guiana: Montagne des Chevaux (4.7167, -52.4), 9/21/08, FIT, SEAG, EXO-02907 (CHND, 1ex.); Montagne des Chevaux (4.7167, -52.4), 12/6/08–12/22/08, FIT, SEAG (CHND, 2ex.); Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 1/25/11, FIT, SEAG (AKTC & CHND, 7ex.); Suriname: Sipaliwini, upper Palumeu River, CI-RAP Survey Camp 1, 2.4770°N, 55.6294°W, 275 m, flight intercept trap, 10–16.iii.2012, A. E. Z. Short (SEMC, 1ex.).

Diagnostic description

Length: 1.85–2.09 mm (avg. 1.95 mm); width: 1.65–1.93 mm (avg. 1.73 mm). This species is very similar and closely related to the preceding, differing principally in the following characters: ground punctation of dorsum slightly coarser; secondary punctures of lateral portion of pronotum gradually increasing in size and density laterad; lateral submarginal pronotal stria usually not reaching anterior corner, abbreviated at front; outer subhumeral stria complete, not interrupted at middle. Male: S8 with only a couple setae at apical corner; basal piece ~ 1/3 length of tegmen; tegmen with sides weakly rounded, slightly wider toward base, more or less flat, with basal ‘notch’ in lateral view, apices subacute, weak medioventral process present in basal 1/3; median lobe ~ 1/2 tegmen length, basal apodemes thin.

Etymology

The name of this species means starry, referring to the array of pronotal punctures.

Remarks

This species, like the preceding one, has only been collected through the use of flight interception traps.

Distribution

This species is known from Amazonian Ecuador, Peru, and Brazil, as well as French Guiana.

5. Phelister sparsus sp. nov.

http://zoobank.org/4B7940C1-E3BE-4A00-89B9-D9653A5B615B

Figs 5A, B, 6F, G, Map 4

Type material

Holotype male: “French Guiana: Roura, 18.4 km SSE, 4°36'38"N, 52°13'25"W, 29 MAY–10 JUN 1997, J. Ashe, R. Brooks FG1AB97 180 ex. Flight intercept trap” / “SM0131741 KUNHM-ENT” (SEMC). Paratypes (87): French Guiana: Belvédère de Saül, point de vue (3.6228, -53.2094), 12/10/10, 1/7/11, 2/7/11 and 2/14/11, FIT, SEAG (AKTC & CHND, 7ex.); Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 8/20/10, FIT, SEAG, EXO-02951 (CHND, 1ex.); Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 7/20/09, 9/9/10 and 9/22/09, FIT, SEAG (CHND, 3ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 1/28/10, FIT, SEAG (CHND, 13ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 2/19/10, FIT, SEAG (CHND, 6ex.); Roura, 18.4 km SSE (4.6106, -52.2236), 240 m, 5/29/97–6/10/97, FIT, J. Ashe & R. Brooks, (SEMC, 2ex.); Roura, 27.4 km SSE (4.7389, -52.2236), 280 m, 6/10/97, FIT, J. Ashe & R. Brooks, SM0132188 (SEMC, 1ex.); Saül, 7 km N, Les Eaux Claires (3.6628, -53.2219), 220 m, 5/31/97–6/3/97, FIT, J. Ashe & R. Brooks, SM0094399 (SEMC, 1ex.); Rés. Trésor (route de Kaw Pk18) (4.6105, -52.279), 225 m, 11/21/09, FIT, SEAG, EXO-02962 (CHND, 1ex.); Mont Tabulaire Itoupé (3.0303, -53.1067), 400 m, 3/17/10, FIT, SEAG (CHND, 5ex.); Mont Tabulaire Itoupé (3.0303, -53.1067), 570 m, 3/24/10, FIT, SEAG (CHND, 2ex.); Montagne des Chevaux (4.7167, -52.4), 7/11/09, FIT, SEAG, EXO-02961 (CHND, 1ex.); Montagne des Chevaux (4.7167, -52.4), 5/22/10, FIT, SEAG, EXO-02950 (CHND, 1ex.); Montagne des Chevaux (4.7167, -52.4), 12/6/08–12/22/08, 1/4/09–1/25/09, 2/23/09, 3/8/09–3/15/09 and 4/11/09, FIT, SEAG (AKTC & CHND, 18ex.); Route de Bélizon, p. km 4.5, flight intercept, 8/1/16–8/31/16, J.-L. Guiglaris (AVSC, 2ex.). Suriname: Sipaliwini, CI-RAP Survey Camp 1, upper Palumeu River (-2.4770, -55.6294), 275 m, 3/10/12–3/16/12, flight intercept, A.E.Z. Short (AKTC, 5ex.); Sipaliwini, CI-RAP Surv. Camp 1: on Kutari River (-2.1753, -56.7874), 228 m, 8/19/10–8/24/10, FIT, Larsen & Short (SEMC, 2ex.); Sipaliwini, CI-RAP Surv. Camp 2: Sipaliwini River (-2.1753, -56.7874), 210 m, 8/27/10–9/1/10, FIT, Larsen & Short (SEMC, 2ex.); Sipaliwini, CI-RAP Surv. Camp 3: Wehepai SE Kwamala (2.3629, -56.6977), 237 m, 9/3/10–9/7/10, FIT, Larsen & Short (SEMC, 12ex.); Sipaliwini, CI-RAP Surv. Camp 4: on lower Kasikasima River (2.9773, -55.3850), 200 m, 3/20/12–3/25/12, FIT, T. Larsen (SEMC, 1ex.).

Other material

Brazil: Amapá, Serra do Navio (0.9833, -52), 1/28/90–2/2/90, FIT, EXO-02954 (CHND, 1ex.); Amapá, Serra do Navio (0.9833, -52), 1/28/90–2/2/90, FIT, EXO-02952 (CHND, 1ex.); Amapá, Serra do Navio (0.9833, -52), 5/1/91–5/14/91, FIT (CHND, 3ex.); Amazonas, Reserva Ducke, 26 km NE. Manaus Barbosa (-3, -59.94), February 1995, FIT, M.G.V., EXO-02953 (NHMUK, 1ex.);Pará, Altamira – Marabá: km 18 (-3.15, -52.05), 11/22/83, Ss. cad. de rat, EXO-02956 (CHND, 1ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), 3/29/89–4/6/89, FIT, EXO-02955 (CHND, 1ex.).

Diagnostic description

Length: 1.85–2.01 mm (avg. 1.95 mm); width: 1.65–1.93 mm (avg. 1.73 mm). Body somewhat narrowly elongate oval, convex, dark rufescent, with ground punctation very fine and inconspicuous; frons and epistoma narrow, depressed along midline, sparsely punctate; supraorbital stria present, narrowly separated from sides of frontal; frontal stria complete, sinuate through frontal depression; epistoma weakly raised along sides and front; labrum narrow, apically emarginate; mandibles lacking basal teeth; antennal club elongate with elongate median setose patch and two smaller basal setose patches on dorsal surface; prescutellar impression broadly oval, ~ twice as wide as scutellum; pronotal disk with sparse secondary punctures close to sides; median pronotal gland openings distinctly annulate, 3/4 behind anterior margin; marginal pronotal stria complete along sides and front; submarginal pronotal stria complete along sides, just turning anterior corner, the marginal bead markedly convex; elytron with single, complete epipleural stria, with a rather uniform row of punctures along its inner edge; outer subhumeral stria variably present in basal and apical halves, typically interrupted and basally fragmented (nearing absent), inner absent, dorsal stria one slightly abbreviated from apex, striae 2–4 complete, 4^th arched to suture, 5^th present in apical 1/2, sutural stria in apical 2/3, all striae formed by punctures connected by a thin stria; propygidium with large, elongate secondary punctures separated by ~ their widths, those of pygidium smaller and sparser, densest in basal corners; prosternal keel emarginate at base, striae separate basally, evenly convergent to meet ~ 1/4 from presternal suture; prosternal lobe short, bluntly triangular, lacking marginal stria; mesoventrite produced, with complete marginal stria continued at sides by postmesocoxal stria, which ends posterolaterad mesocoxa; mesometaventral stria bluntly angulate at middle, reaching middle of mesoventrite, continued at sides by lateral metaventral stria toward, but ending short of, inner 1/3 of metacoxa; metaventrite and 1^st abdominal ventrite impunctate; 1^st abdominal ventrite with incomplete lateral stria along inner margin of metacoxa; protibia with outer margin rounded, weakly dentate, with five or six marginal spines; male protarsus with flattened ventral setae; meso- and metatibiae slender, with marginal spines largely restricted to apical one-third. Male: basal piece ~ 1/4 length of tegmen; tegmen with sides subparallel to near apex, then apex roundly expanded, strongly curved in lateral view, medioventral process absent; median lobe ~ 3/4 tegmen length, basal apodemes abruptly thinner near tips.

Etymology

The name sparsus is meant to contrast with the earlier fimbriatus, referring to the setae of the apex of the male 8^th sternite.

Remarks

Like several members of this group, this species is relatively elongate, with weakly rounded sides, strongly convex, and with relatively inconspicuous ground punctation. It is somewhat generalized within the group, lacking the oddly modified, ‘scalloped’ tibiae seen in a few species. This species, P. trigonisternus, P. pretiosus, and P. globosus also have two small sensory patches in place of the basal antennal annulus (at least on the ventral/anterior face), have the elytral striae serially punctiform (variably, but always to a great degree), and the males have flattened protarsal setae. Among these, P. sparsus is distinguished by the combination of a broadly oval prescutellar impression, a complete lateral submarginal pronotal stria, the lack of a prosternal lobe stria, the presence of ~ 20 larger secondary lateral pronotal punctures, and an outer subhumeral stria that is present basally and apically, but interrupted in the middle.

Distribution

This species is mainly found in lower Amazonian portions of Brazil, as well as in French Guiana and Suriname.

6. Phelister pretiosus sp. nov.

http://zoobank.org/52B124ED-1466-4771-A774-2DE7C09DDE0B

Figs 5C, D, 6H, I, Map 5

Type material

Holotype male: “Ecuador Napo Region 5–25.ix.00” / “Tiputini Research Station 220m 0°38'0"S, 76°9'0"W” / “BM2000:194 D.J.Inward K.A.Jackson” / “Caterino/Tishechkin Exosternini Voucher EXO-00359” (NHMUK). Paratypes (3): Ecuador: same data as type (NHMUK, 1ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 8/3/08–8/6/08, FIT, LSAM Team (AKTC, 1ex.); Orellana: Tiputini Biodiversity Station, 0.6376°S, 76.1499°W, 4–9.vi.2011, FIT, M.S. Caterino & A.K. Tishechkin (MSCC, 1ex.).

Other material

Ecuador: Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/19/08–7/22/08, FIT, A. Tishechkin (AKTC, 1ex.); Suriname: Sipaliwini, upper Palumeu River, CI-RAP Survey Camp 1, 2.4770°N, 55.6294°W, 275 m, flight intercept trap, 10–16.iii.2012, A. E. Z. Short (SEMC, 2ex.).

Diagnostic description

Length: 1.97–2.17 mm (avg. 2.10 mm); width: 1.65–1.93 mm (avg. 1.84 mm). This species is also very closely related to P. sparsus, differing principally in the following characters: sides more broadly rounded; prosternal keel striae united by a transverse stria basally, enclosing a rather small triangular space ~ 3/4 as long as keel; prosternal lobe with marginal stria present; middle angle of mesometaventral stria only reaching basal fourth of mesoventrite; abdominal ventrite one with row of secondary punctures along anterior margin; male with aedeagus narrower, less curved in lateral view, with medioventral process that barely protrudes beneath; tergite 10 partially divided. Male: basal piece ~ 1/4 length of tegmen; tegmen widest near middle, evenly narrowed to base and apex, apex subtruncate; tegmen weakly curved, rather flat in lateral view, weak medioventral process present in basal 1/3; median lobe ~ 2/3 tegmen length, basal apodemes thin.

Etymology

This species name means ‘precious’, in reference to its jewel-like appearance.

Distribution

This species is known from only a few specimens from Amazonian Ecuador and Suriname.

Remarks

The external characters listed in the description to distinguish this species are all relatively minor, but consistent. It lacks the labral fovea of P. trigonisternus and exhibits secondary punctures along the anterior margin of the 1^st abdominal ventrite that P. sparsus lacks. The male genitalia are also quite distinctive, with the tegmen sides being straighter than others (Fig. 6H vs. 6B, D, F, and 6J).

7. Phelister trigonisternus Marseul, 1889

Figs 4A–D, 5E–G, 6J, K, Map 5

Phelister trigonisternus Marseul, 1889: cxxxix.

Type material

Lectotype , of undetermined sex, hereby designated: “Amer Sahlberg” / “2772” / “Marseul 14.12.86” / “trigonisternus” / “Type” / “Phelister trigonisternum [sic] Mars Type” / “Lectotype Phelister trigonisternus Marseul, 1889, M.S.Caterino & A.K.Tishechkin des. 2010”; NHMUK.

Map 5.

Collecting records for Phelister pretiosus (black circles), P. trigonisternus (black squares) and P. globosus (stars).

Other material

Brazil: Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau (-9.815, -58.2858), 12/15/10–12/18/10, FIT, F.Z. Vaz-de-Mello & A.F. Oliveira (CEMT, 2ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), October, 2009, FIT, F.Z. Vaz-de-Mello (CEMT, 3ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1984, FIT (CHND, 8ex.); Pará, Barcarena (-1.5, -48.6167), 6/13/91–6/25/91, FIT (CHND, 4ex.); Pará, Barcarena (-1.5, -48.6167), 12/7/91–12/20/91, FIT, EXO-02915 (CHND, 1ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), October, 1984, FIT (CHND, 4ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), November 1984, FIT (CHND, 3ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), August 1985, FIT (CHND, 3ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), May 1985, FIT, EXO-02913 (CHND, 1ex.); Pará, Carajás, Serra Norte (-6.0667, -50.2), 1/22/84–1/27/84, Ss. cad. de Sarigue (CHND, 2ex.); Pará, Tucuruí (-3.75, -49.667), 11/28/85–12/11/85, FIT (CHND, 4ex.); Pará, Tucuruí (-3.75, -49.667), 2/16/89–3/2/89, FIT (CHND, 5ex.); Suriname: Sipaliwini, CI-RAP Surv. Camp 3: Wehepai SE Kwamala (2.3629, -56.6977), 237 m, 9/3/10–9/7/10, FIT, Larsen & Short, EXO-02918 (SEMC, 1ex.)

Diagnostic description

Length: 2.09–2.36 mm (avg. 2.19 mm); width: 1.81–2.01 mm (avg. 1.89 mm). Phelister trigonisternus is closely related and very similar to the two described above (P. sparsus & P. pretiosus), differing principally in the following characters: head (frons) slightly broader, distinctly widened above antennal bases; labrum depressed on anterior surface, appearing foveate; lateral submarginal pronotal stria weak to obliterated by larger, more conspicuous lateral pronotal punctures (submarginal stria basically obsolete except for a few connected punctures in some); 5^th dorsal stria present in apical 1/3, sutural stria in apical 1/2; striae of prosternal keel weakly united along basal margin; mesometaventral stria reaching basal 1/3 of mesoventrite, lateral metaventral stria nearly reaching middle of metacoxa (longer and displaced laterad from its course in P. sparsus). Male: basal piece ~ 1/3 length of tegmen; tegmen weakly widened at middle, evenly narrowed to base and apex, apex subtruncate; tegmen weakly curved in lateral view, slightly humped near base, weak medioventral process present in basal 1/3; median lobe ~ 2/3 tegmen length, basal apodemes thin.

Remarks

The impressed labrum of this species is unique among the species in this paper. This species was described only from ‘Amer.[ica]’, so the type locality is very imprecisely known. The closest match we were able to make was with a specimen from Pará, Brazil. It matches the lectotype very well in most characters but differs slightly in that the type lacks a basal fragment of the outer subhumeral stria, has a weaker frontal stria, and has the lateral pronotal punctation slightly sparser.

Distribution

This species is known from central to northeastern Brazil and Suriname.

8. Phelister globosus sp. nov.

http://zoobank.org/2A57D901-5DCE-49B1-9850-610EC0340932

Figs 7A, B, 8A, B, Map 5

Type material

Holotype male: “Ecuador: Orellana, Tiputini Biodiversity Station 0°38.2'S, 76°8.9'W. Flight intercept FIT7-1. 27–31 July 2008. A.K.Tishechkin” / “Caterino/Tishechkin Exosternini Voucher EXO-00365” (FMNH). Paratypes (45): Ecuador: Orellana, Est. Biodiv. Tiputini (-0.6367, -76.1483), 7/27/08–7/31/08, FIT, A. Tishechkin, EXO-00365 (AKTC, CHND, LSAM & MSCC, 11ex.); Orellana, Est. Biodiv. Tiputini (-0.6367, -76.1483), 7/29/08–8/3/08, FIT, A. Tishechkin, EXO-00365 (AKTC & LSAM, 3ex.); Orellana, Est. Biodiv. Tiputini (-0.6367, -76.1483), 7/29/08–8/3/08, FIT, A. Tishechkin, EXO-00365 (AKTC, 1ex.); Orellana, Est. Biodiv. Tiputini (-0.6367, -76.1483), 8/3/08–8/6/08, FIT, LSAM Team, EXO-00365 (AKTC, CHND, LSAM & MSCC, 15ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 6/18/99–7/20/99, FIT, A.K. Tishechkin (LSAM, 5ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 7/11/08–7/24/11, FIT, A.K. Tishechkin, (AKTC, CHND, LSAM & MSCC, 9ex.); Orellana, Yasuni NP, Via Maxus at Puente Piraña, 0°39.5'S, 76°26'W, 245 m, flight intercept trap, 20–24.vii.2008, A. K. Tishechkin (AKTC, 1ex.).

Other material

Brazil: Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), December 2010, FIT, F.Z. Vaz-de-Mello, EXO-00854 (CEMT, 1ex.); French Guiana: Montagne des Chevaux (4.7167, -52.4), 2/23/09–3/8/09, FIT, SEAG, (CHND, 3ex.); Régina, Rés. Natur. des Nouragues, Petit Plateau (4.09, -52.68), 9/16/10, FIT, S. Brûlé, EXO-02946 (DZUP, 1ex.); Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 1/25/11, FIT (CHND, 1ex.); Suriname: Sipaliwini, CI-RAP Surv. Camp 1: on Kutari River (-2.1753, -56.7874), 228 m, 8/19/10–8/24/10, FIT, T. Larsen & A.E.Z. Short (SEMC, 1ex.); Sipaliwini, CI-RAP Surv. Camp 4: on lower Kasikasima River (-2.9773, -55.3850), 200 m, 3/20/12–3/25/12, FIT, T. Larsen (AKTC & SEMC, 4ex.).

Figure 7.

A, B Phelister globosus: A dorsal habitus B ventral habitus C, D P. serratus: C dorsal habitus D ventral habitus E, F P. geminus: E dorsal habitus F ventral habitus G, H P. parana: G dorsal habitus H ventral habitus.

Diagnostic description

Length: 1.58–1.59 mm (avg. 1.58 mm); width: 1.26–1.38 mm (avg. 1.32 mm). Body small, elongate oval, convex, rufescent, with ground punctation very fine and inconspicuous; supraorbital stria absent; frons narrow, smooth, depressed at middle, depression barely extending onto epistoma, the latter mostly convex; frontal stria impressed at middle with ends curved dorsad, separate from sides; labrum narrow, produced, subangulate at middle; mandibles lacking basal teeth; prescutellar area depressed, but with impression weakly defined, little larger than scutellum; pronotal disk lacking secondary punctures; median pronotal gland openings small, not distinctly annulate, 3/4 behind anterior margin; marginal pronotal stria complete along sides and front; submarginal pronotal stria complete along the sides, just turning anterior corner, the marginal bead markedly convex; elytron with single, complete epipleural stria; outer subhumeral stria present in apical 1/2 only; inner absent; dorsal stria one abbreviated from apex, obsolete in apical one-third, striae 2–4 complete, but comprising series of weakly connected punctures apically, 4^th stria arched to near suture, 5^th stria present in apical one-third as series of punctures only, sutural stria a series of punctures in apical 1/2; propygidium only very sparsely punctate; prosternal keel broad, emarginate at base, striae widely separate basally, evenly convergent to meet in anterior arc; prosternal lobe short, rounded, slightly reflexed, with marginal stria rather deeply impressed and slightly removed from edge, especially at sides; mesoventrite produced, with very fine, complete marginal stria, continued at sides by postmesocoxal stria, which ends posterolaterad mesocoxa; mesometaventral stria fine, bluntly angulate at middle, nearly reaching middle of mesoventrite, continued at sides by lateral metaventral stria to middle of metacoxa; metaventrite and 1^st abdominal ventrite impunctate; 1^st abdominal slender, weakly dentate, with five or six prominent marginal spines; protarsus of both sexes with flattened ventral setae; meso- and metatibiae slender, with few fine marginal spines. Male: basal piece ~ 1/4 length of tegmen; tegmen narrowest near base, widening slightly toward rounded apex, weakly curved and thick in lateral view, medioventral process absent; median lobe ~ 1/3 tegmen length, basal apodemes abruptly narrowed at their midpoints.

Etymology

This species name refers to its broadly rounded body.

Distribution

This species is known from three widely scattered localities, Amazonian Ecuador, Mato Grosso, Brazil, and French Guiana.

Remarks

This species is also quite similar to the above three, but is the most broadly rounded and convex of them. It is also distinguished by its smaller prescutellar impression, non-annulate median pronotal gland openings; lack of lateral pronotal punctures, and frontal stria with the median portion detached from the lateral portions. Despite the disjunct localities occupied by this species, no geographic variation is apparent.

Figure 8.

Male genitalia A, B Phelister globosus: A aedeagus, dorsal B aedeagus, lateral C, D P. serratus: C aedeagus, dorsal D aedeagus, lateral E, F P. parana: E aedeagus, dorsal F aedeagus, lateral.

9. Phelister serratus sp. nov.

http://zoobank.org/8CAABFE5-09F8-4963-9A7D-3946C03333E4

Figs 2F, 7C, D, 8C, D, Map 6

Type material

Holotype : “Ecuador: Orellana: Est. Biodiv. Tiputini, 0.6376°S, 76.1499°W, flight intercepts, 4–9.vi.2011, M.S.Caterino & A.K.Tishechkin, AT1342” / “Caterino DNA Voucher, Extraction: MSC-2188, Species: ExoScutimp13.22, Extraction Date: viii.17.2011” / “Caterino/Tishechkin Exosternini Voucher EXO-00710” (FMNH). Paratypes (202): Ecuador: same data as type (MSCC, AKTC, CHND, 10ex.); Napo (20 km S. Tena) (-1.1, -78), 600 m, 7/11/76, Broken termite nests, S. Peck (FMNH, 5ex.); Orellana, Est. Biodiv. Tiputini (-0.6367, -76.1483), 7/27/08–8/3/08, FIT, A. Tishechkin, EXO-03056 (AKTC, 63ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 8/1/08, FIT, A. Tishechkin, EXO-00080 (1ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 8/3/08–8/6/08, FIT, LSAM Team (LSAM, 19ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 6/18/99–7/23/99, FIT, A. Tishechkin, (LSAM, 3ex.); Orellana, Est. Cientifica Yasuní (-0.6744, -76.6472), 215 m, 9/5/99–9/10/99, FIT, primary forest, E. Riley (TAMU, 9ex.); Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/10/08–7/24/08, FIT, A. Tishechkin (AKTC & LSAM, 61ex.); Orellana, Payamino Research Station (-0.4933, -77.2914), 300 m, 7/30/07–8/12/07, FIT, Tropical Rainforest, CPDT Gillett (NHMUK, 3ex.); Zamora, Chinchipe, Rio Bombuscaro (-4.1167, -78.9833), 6/26/96–7/4/96, FIT, P. Hibbs, SM0091227 (SEMC, 1ex.); Colombia: Amazonas, Leticia (-4.2, -69.9), 700ft, 2/24/74–2/28/74, S. Peck, EXO-03055 (CMNC, 1ex.); Vaupes, Est. Biol. Caparu, Rio Apoporis (-1.1, -69.5), 9/27/95–12/1/95, FIT, Black-water terrace forest on sandy soils, B. Gill (AKTC, 2ex.); Vaupes, Parco Nac. Mosiro-Itajura (Caparu), Centro Ambiental (-1.0667, -69.5167), 60 m, 1/20/03–1/30/03, FIT, D. Arias & M. Sharkey (AKTC, 10ex.); Peru: Loreto, Explornapo Lodge, 160 km NNE Iquitos (-3.2713, -72.8883) xii.29.1997, FIT, M.V.L. Barclay (NHMUK, 2ex.); Loreto, 1.5 km N Teniente Lopez (-2.5943, -76.1153), 210–240 m, 7/18–24/93, FIT, R. Leschen (SEMC, 5ex.); Loreto, Campamento San Jacinto (-2.3125, -75.8628), 175–215 m, 7/5–7/93, FIT, R. Leschen (SEMC, 5ex.); Loreto, Iquitos (-3.74, -73.27), 90 m, 5/5/92, FIT, J. Danoff-Berg (SEMC, 11ex.); Loreto, Iquitos – Nauta rd., km 58, Rio Itaya (-4.2563, -73.4675), 120 m, 5/5/09–5/9/09, FIT, next to entrance into Eciton burchelli statary bivouac in a hollow treee, A.V. Petrov, EXO-03118 (AKTC, 1ex.).

Map 6.

Collecting records for Phelister serratus (white circles), P. geminus (stars).

Other material

Bolivia: Cochabamba, Univ. de San Simon, Cochabamba, 67.5 km NE Est. Biol. Valle del Sajita (-17.1092, -64.7978), 300 m, 2/7/99–2/9/99, FIT, R. Hanley (SEMC, 5ex.); La Paz., Rio Tuich, Chalan (-14.4267, -67.92), 320 m, 8/10/95–8/20/95, S. Spector, USNM 2026428 (USNM, 1ex.); Brazil: Amapá, Serra do Navio (0.9833, -52), 5/1/91–5/14/91, FIT (CHND, 2ex.); Amazonas, Presidente Figueiredo, 2.017°S, 59.717°W, 17.ix.2009, FIT, FWT Leivas (DZUP 2ex.); Amazonas, Reserva Ducke, 26 km NE. Manaus Barbosa (-3, -59.94), February 1995, FIT, M.G.V., EXO-03062 (NHMUK, 1ex.); BRAZIL: Amazonas, Reserva Ducke (-2.9, -59.9667), 11/29/77, emergence trap, J. Arias (USNM, 1ex.); Amazonas, Reserva Ducke, AM-010, km 26 (-3, -59.94), 12/2/77, J. Arias (USNM, 3ex.); Amazonas, Manaus (-3, -59.94), 7/9/08–7/10/08, FIT, P. Grossi, EXO-03063 (CHND, 1ex.); Amazonas, Rio Taruma Mirim 2 km from Rio Negro – Igapó (-3.0333, -60.2833), 7/27/79, fogged with Pyrethrum, Black-water innundation forest canopy, Adis, Erwin, Montgomery, et.al., EXO-03061 (USNM, 1ex.); Espírito Santo, Mun. Linhares, Faz. Lagoa do Macuco (-19.0639, -39.9786), 10 m, 1/27/00, FIT, primary lowland Atlantic forest, sandy soil, F. Génier & S. Ide, SM0809973 (SEMC, 1ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Mata Norte (-9.8192, -58.26), 12/8/10–12/14/10, FIT, F.Z. Vaz-de-Mello (CEMT, 6ex.); BRAZIL: Minas Gerais, Parque Estadual do Rio Doce, Centro de Pesquisas, 19.7637°S, 42.6303°W, 305 m, flight intercept (AKTC, 8ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1985, FIT (CHND, 4ex.); Pará, Barcarena (-1.5, -48.6167), 12/7/91–12/20/91, FIT, EXO-03066 (CHND, 1ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), September 1984, FIT, EXO-03068 (CHND, 1ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), August 1985, FIT (CHND, 2ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), September 1985, FIT (CHND, 2ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), May 1985, FIT, EXO-03075 (CHND, 1ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), March 1985, FIT, EXO-03074 (CHND, 1ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), October, 1986, FIT (CHND, 5ex.); Pará, Tucuruí (-3.75, -49.667), 11/28/89–12/11/89, FIT, EXO-03073 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), May 1986, FIT, EXO-03071 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), June 1985, FIT, EXO-03072 (CHND, 1ex.); Pará, July 1898, H.H. Smith, EXO-03065 (NHMUK, 1ex.); Costa Rica: Heredia, Est. Biol. La Selva (10.4333, -84.0167), 6/29/98, FIT, C. Carlton & A. Tishechkin, LSAM 0046301 (LSAM, 1ex.); Heredia, Est. Magsasay, P.N. Braulio Carrillo (10.4, -84.05), 200 m, January 1991, M. Barrelier, INBIO CRI000 701997 (INBIO, 1ex.); Limon, Sector Cerro Cocori, Fca de E. Rojas (10.6, -83.72), 150 m, August 1991, E. Rojas, INBIO CRI000 582416 (INBIO, 1ex.); Limon, Sector Cerro Cocori, Fca de E. Rojas (10.6, -83.72), 150 m, April 1992, E. Rojas, INBIO CRI000 861199 (INBIO, 1ex.); Limon, Sector Cerro Cocori, Fca de E. Rojas (10.6, -83.72), 150 m, May 1993, E. Rojas, INBIO CRI001 322121 (INBIO, 1ex.); French Guiana: Cayenne, 33.5 km S and 8.4 km NW of Hwy N2 on Hwy D5 (4.805, -52.4781), 30 m, 5/29/97–6/9/97, FIT, J. Ashe & R. Brooks, SM0102385 (SEMC, 1ex.); Roura, 27.4 km SSE (4.7389, -52.2236), 280 m, 6/10/97, FIT, J. Ashe & R. Brooks (SEMC, 2ex.); Saül, 7 km N, 3 km NW Les Eaux Claires, Mt. La Fumée (3.6628, -53.2219), 490 m, 6/1/97–6/8/97, FIT, J. Ashe & R. Brooks, SM0096866 (SEMC, 1ex.); Cayenne-Kourou, lieu-dit Tibourou (5, -52.5), 9/20/08, FIT, J. Touroult, EXO-03091 (CHND, 1ex.); Mont Tabulaire Itoupé (3.0303, -53.1067), 400 m, 3/17/10, FIT, SEAG (CHND, 2ex.); Mont Tabulaire Itoupé (3.0303, -53.1067), 400 m, 3/23/10, FIT, SEAG, EXO-03095 (CHND, 1ex.); Montagne des Chevaux (4.7167, -52.4), 1/18/09, FIT, SEAG, EXO-03093 (CHND, 2ex.); Montagne des Chevaux (4.7167, -52.4), 11/16/09, FIT, SEAG, EXO-03092 (CHND, 1ex.); Montagne des Chevaux (4.7167, -52.4), 1/4/09, & 4/11/09, FIT, SEAG (CHND, 2ex.); Guyana: Mazaruni Potaro, Takutu Mountains (6.25, -58.9167), 12/8/83, FIT, montane rainforest near logging area, W.E. Steiner & P.D. Perkins (USNM, 2ex.); Region 8, Iwokrama Forest, 26 km SW Kurupukari, Iwokrama Mt. (4.3339, -58.7883), 300 m, 5/23/01–5/25/01, FIT, R. Brooks, Z. Falin, SM0567082 (SEMC, 1ex.); Region 8, Iwokrama Forest, Pakatau hills (4.7483, -59.0267), 70 m, 5/25/01–5/29/01, FIT, R. Brooks, Z. Falin, SM0569306 (SEMC, 1ex.); Kurupukari (4.6667, -58.6667), September-November 1992, Malaise/FIT, EXO-03096 (NHMUK, 1ex.); Kurupukari, Mora Plot (4.6667, -58.6667), 10/26/92, FIT, EXO-03097 (NHMUK, 1ex.); Panama: Colon, San Lorenzo Forest (9.2833, -79.9667), 9/28/03–9/30/03, FIT, A. Tishechkin, EXO-03085 (AKTC, 1ex.); Colon, San Lorenzo Forest, STRI crane site (9.2833, -79.9667), 5/13/04–5/25/04, FIT, A. Tishechkin (AKTC, 7ex.); Colon, San Lorenzo Forest, STRI crane site (9.2833, -79.9667), 5/17/04–5/18/04, Crushed Nasutitermes nest, site, A. Tishechkin, EXO-03088 (AKTC, 1ex.); Darien, Cana Biological Station, Serrania de Pirre (7.755, -77.685), 1200 m, 6/4/96–6/9/96, FIT, J. Ashe & R. Brooks (SEMC, 9ex.); Darien, Cana Biological Station, Serrania de Pirre (7.755, -77.685), 1380 m, 6/4/96–6/9/96, FIT, J. Ashe & R. Brooks (SEMC, 3ex.); Darien, Cana Biological Station (7.755, -77.685), 550 m, 6/3/96–6/7/96, FIT, J. Ashe & R. Brooks (SEMC, 7ex.); Panama, Chepo-Carti Rd. (9.28, -79.1), 400 m, June 1982, FIT, B. Gill (CNCI, 2ex.); San Blas, Nusagandi Res. (9.35, -78.9833), 350 m, 5/16/95–5/17/95, FIT, J.&A. Ashe (SEMC, 2ex.); San Blas, Nusagandi Res. (9.3167, -78.9167), 320 m, 5/27/95–5/28/95, FIT, Gillogly – Stockwell, EXO-03084 (TAMU, 1ex.); Peru: Cusco, Villa Carmen Fld Stn. ~ 1.7 km west cafeteria, 12.89250°S, 71.41917°W, 555 m, 28–30.V.2011, DJ Bennett & E. Razuri, FIT (SEMC, 1ex.); Cusco, Villa Carmen Fld Stn., 12.87753°S, 71.40153°W, 555–1000 m, 26–28.V.2011, DJ Bennett, misc. hand collecting (SEMC, 1ex.); Cusco, Cock of the Rock Lodge NE Paucartambo (-13.055, -71.545), 1120 m, 11/4/07–11/9/07, FIT, D. Brzoska (SEMC, 4ex.); Junín, ~ 16 km NW Satipo, Rio Venado (-11.1989, -74.7705), 1110 m, 2/20/10–2/22/10, A.V. Petrov, EXO-03078 (AKTC, 3ex.); Junín, ~ 15 km NW Satipo, nr. Rio Venado at 11°11.18'S, 74°46.02'W, 1100–1400 m, 4/20/19–5/18/19, A. V. Sokolov (AVSC, 2ex.); Junín, ~ 3 km S Satipo, Ricardo Palma (-11.276, -74.642), 780 m, 3/19/09–3/21/09, FIT, J. Tapia & A. Tishechkin, EXO-00383 (AKTC, 1ex.); Junín, 11 km NE Puerto Ocopa, Los Olivos (-11.05, -74.2587), 1200 m, 3/25/09–4/1/09, FIT, A. Tishechkin (AKTC, 15ex.); Madre de Dios, Cocha Cashu Bio. Stn., Manu Nat. Park (-11.8958, -71.4067), 350 m, 10/17/00–10/19/00, FIT, R. Brooks, SM0257955 (SEMC, 1ex.); Madre de Dios, Los Amigos Field Station, Manu (-12.5424, -70.1343), 284 m, 7/20/06–7/29/06, pitfall trap, Pacal bamboo forest, J. Jacobs, CASENT 8123334 (CASC, 1ex.); Madre de Dios, Los Amigos Field Station, Manu (-12.5421, -70.1435), 292 m, 7/31/06–8/9/06, pitfall trap, Huangana terra firma forest, J. Jacobs, CASENT 8123335 (CASC, 1ex.); Madre de Dios, Los Amigos Field Station, Manu (-12.5657, -70.0988), 272 m, 7/31/06–8/9/06, pitfall trap, Sobrevuelo terra firma forest, J. Jacobs, CASENT 8123336 (CASC, 1ex.); Madre de Dios, Pakitza Bio. Stn., Reserved Zone, Manu National Park, Castanal Trail (-11.9447, -71.2833), 317 m, 10/15/00–10/16/00, FIT, R. Brooks (SEMC, 4ex.); Madre de Dios, Pantiacolla Lodge, 5.5 km NW El Mirador Trail, Alto Madre de Dios River (-12.6528, -71.2578), 500 m, 10/23/00–10/26/00, FIT, R. Brooks (SEMC, 3ex.); Madre de Dios, Pantiacolla Lodge, Alto Madre de Dios R. (-12.655, -71.2317), 420 m, 11/14/07–11/19/07, FIT, D. Brzoska (SEMC, 16ex.); Madre de Dios, CICRA Field Stn., ~ 2 km NW cafeteria res. plot. 12.55236°S, 70.10989°W, 295 m, Flight intrcept. 7–13.vi.2011, Chaboo Team (SEMC 35ex.); Madre de Dios, CICRA Field Stn., ~ 2 km NW cafeteria res. plot. 12.55212°S, 70.10921°W, 295 m, Flight intrcept. 9–11.vi.2010, Chaboo Team (SEMC, 4ex.); Cusco, Villa Carmen Fld Stn., 12.89221°S, 71.41946°W, 555 m, 20–22.V.2011, DJ Bennett, FIT (SEMC, 1ex.); Suriname: Brokopondo, Brownsberg Nature Preserve, Witi Creek Trail (4.9486, -55.1814), 340 m, 6/23/99–6/25/99, FIT, Z. Falin, A. Gangadin, H. Hiwat, SM0166958 (SEMC, 1ex.); Brokopondo, Brownsberg Nature Preserve, Witi Creek Trail (4.9486, -55.1814), 420 m, 6/23/99–6/25/99, FIT, Z. Falin, A. Gangadin, H. Hiwat, SM0178921 (SEMC, 1ex.); Commewijne, Akintosoela (5.2714, -54.9208), 40 m, 7/3/99, FIT, Z. Falin, EXO-03049 (CMNC, 1ex.); Commewijne, Akintosoela, 32 km SE Suriname River bridge, road to Redi Doti (5.2714, -54.9208), 40 m, 6/29/99–7/3/99, FIT, Z. Falin, B. DeDijn, A. Gangadin, SM0176718 (SEMC, 1ex.); Marowijne, Palumeu, (3.3489, -55.4383), 160 m, 7/5/99–7/9/99, FIT, Z. Falin, D. Konoe, SM0180204 (SEMC, 1ex.); Marowijne, Perica, 70 km E Paramaribo on East-West Road (5.6744, -54.6086), 5 m, 5/31/99–6/5/99, FIT, Z. Falin, B. DeDijn, SM0182867 (SEMC, 1ex.); Pará, nr. Overbridge at 5.5195, -55.0695, 2/10/10–2/14/10, FIT, W.B. Warner (WBWC, 4ex.); Pará, nr. Overbridge River Resort (5.53, -55.058), 2/15/10–2/18/10, FIT, C. Gillet, P. Skelley, W. Warner, EXO-03053 (FSCA, 1ex.); Pará, Zanderij, nr. Guesthouse (5.4583, -55.2167), 2/7/10–2/18/10, FIT, C. Gillet, P. Skelley, W. Warner (FSCA, 4ex.); Saramacca, West Suriname Road, 108 km WSW Zanderij Airport (5.2269, -55.8817), 30 m, 6/8/99–6/10/99, FIT, Z. Falin, B. DeDijn, SM0178833 (SEMC, 1ex.); Saramacca, West Suriname Road, 145 km WSW Zanderij Airport (5.1517, -56.1456), 50 m, 6/10/99–6/14/99, FIT, Z. Falin, B. DeDijn, SM0179968 (SEMC, 1ex.); Sipaliwini, CI-RAP Surv. Camp 1: on Kutari River (-2.1753, -56.7874), 228 m, 8/19/10–8/24/10, FIT, Larsen & Short, EXO-03050 (SEMC, 3ex.); Sipaliwini, CI-RAP Surv. Camp 3: Wehepai SE Kwamala (2.3629, -56.6977), 237 m, 9/3/10–9/7/10, FIT, Larsen & Short, EXO-03051 (SEMC, 1ex.); Sipaliwini, CI-RAP Surv. Camp 1: upper Palumeu River (2.4770°N, 55.6294°W), 275 m, FIT, 3/10/12–3/16/12, A.E.Z. Short (AKTC & SEMC, 5ex.); Sipaliwini, CI-RAP Surv. Camp 4: on lower Kasikasima River (-2.9773, -55.3850), 200 m, 3/20/12–3/25/12, FIT, T. Larsen (AKTC & SEMC, 3ex.).

Diagnostic description

Length: 1.85–2.17 mm (avg. 2.01 mm); width: 1.50–1.77 mm (avg. 1.64 mm). Body subparallel-sided, weakly elongate, slightly flattened, rufescent, ground punctation of dorsum moderately fine; frons narrow, deeply impressed along midline; supraorbital stria fine, short, detached at sides; frontal stria deeply impressed along eyes, finely impressed at middle, complete; labrum weakly emarginate at apex; mandibles lacking basal teeth; antennal club elongate; prescutellar impression semicircular, ~ 2.5 × scutellar width; pronotum lacking secondary punctures in middle third, but with sparse (varied in density) secondary punctures laterad gland openings; median pronotal gland openings ~ 3/4 behind anterior margin, distinctly annulate; lateral submarginal pronotal stria complete, curved inward at front, weakly crenulate, disk depressed along its inner edge, marginal bead convex; elytron with single, complete epipleural stria; outer lateral subhumeral stria in apical 1/2 or less, inner absent; dorsal striae 1–4 complete, 4^th arched to suture, 5^th stria present in apical 1/2, sutural stria slightly longer; propygidium with small secondary punctures uniformly separated by about their diameters, those of pygidium slightly smaller and sparser; prosternal keel broad at base, striae widely separated at base, meeting 2/3 from base, keel abruptly narrowed anterad; prosternal lobe extremely short, with marginal stria; mesoventrite short, strongly projecting, marginal stria fine, continued at side by postmesocoxal stria to middle of lateral portion of metaventrite; mesometaventral stria bluntly angulate at middle, reaching middle of mesoventrite, lateral metaventral stria reaching middle of metacoxa; metaventrite impunctate; 1^st abdominal ventrite with single row of secondary punctures along anterior margin; protibiae narrow, outer margin ‘scalloped’, with a close set series of fine incisions, each with a minute spine, the apical-most spine larger; protarsal setae of male not modified; mesotibia with rather dense series of fine marginal spines, those of metatibia fewer, sparser, and principally restricted to apical 1/2. Male: basal piece sp. nov. 1/4 length of tegmen; tegmen with sides subparallel in basal 2/3, narrowed to thin, blunt, slightly divergent apices; weakly curved, thickened at middle in lateral view; medioventral process absent; median lobe ~ 1/3 tegmen length, basal apodemes abruptly narrowed at basal 1/3.

Etymology

This species name refers to the somewhat ‘serrate’ protibiae, shared with the very similar following species.

Remarks

This species and the next one (P. geminus) share one very distinctive character, having what we’ve previously referred to as ‘scalloped’ protibial margins (Fig. 2G), with very small, closely set marginal spines and no development of marginal teeth. While unusual, a similar form of protibia also occurs in the P. umens subgroup, not obviously related to this one. Phelister serratus and P. geminus are also rather elongate, parallel-sided, and relatively impunctate, with depressed pronotal margins, a quite vertical head, and a narrow frons. These two species are, however, extremely similar, and difficult to distinguish, even in male genitalia. However, we feel that the differences we have observed are sufficiently marked and consistent to recognize them as distinct (see Fig. 7C, D vs. 7E, F): P. serratus is narrower in body form, with the pronotal disk less strongly depressed along the inner edge of the lateral submarginal stria, has the median portion of the frontal stria attached to the lateral portions, and is generally more strongly punctate, both in ground punctation and in secondary pronotal punctures.

We have generated some DNA sequence data for individuals of each from the same (type) locality, and, while we have not successfully sequenced the barcoding gene for both, they are distinct in 18S sequence, which also supports the hypothesis that they are distinct. We have selected these respective DNA vouchers as the type specimens of each.

Central American specimens of P. serratus tend to show a few distinctive variants, but not consistently; often they have the prosternal keel less strongly narrowed toward the front, and the lateral epistomal ridges may appear striate. We considered separating these as distinct, but for now leave this as a widespread and variable species. In part for this reason, we have restricted the type series to a relatively small number of localities in eastern Ecuador and Colombia, and northern Peru.

Distribution

This common and widespread species is known from Costa Rica southward to Bolivia, east to the Guianas and Amazonian Brazil, with one record from coastal Brazil (Espírito Santo).

10. Phelister geminus sp. nov.

http://zoobank.org/C39A5584-7FE2-4757-93D6-2A8188A6494B

Fig. 7E, F, Map 6

Type material

Holotype : “Ecuador: Orellana: Est. Biodiv. Tiputini, 0.6376°S, 76.1499°W, flight intercepts, 4–9.vi.2011, M.S.Caterino & A.K.Tishechkin, AT1342” / “Caterino DNA Voucher, Extraction: MSC-2283, Species: ExoScutimpr. #4, Extraction Date: i.27.2012” / “Caterino/Tishechkin Exosternini Voucher EXO-00947” (FMNH). Paratypes (217): Ecuador: same data as type (MSCC, AKTC, 6ex.); Napo, Puerto Misahualli (-1.0333, -77.6667), 3/17/04–3/22/04, J. Jensen, EXO-03167 (CHND, 1ex.); Orellana, Est. Biodiv. Tiputini (-0.6333, -76.0383), 220 m, 9/5/00–9/25/00, FIT, D. Inward & K. Jackson (NHMUK, 11ex.); Orellana, Est. Biodiv. Tiputini (-0.6367, -76.1483), 7/27/08–8/3/08, FIT, A. Tishechkin, EXO-03162 (AKTC, 36ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 8/3/08–8/6/08, FIT, LSAM Team (LSAM, 33ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 6/19/99, Berlese forest litter with Eciton burchelli refuse deposits, C. Carlton, LSAM 0045657 (LSAM, 1ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 7/10/99–7/26/99, FIT, A. Tishechkin (LSAM, 67ex.); Orellana, Est. Cientifica Yasuní (-0.6744, -76.6472), 215 m, 9/5/99–9/10/99, FIT, primary forest, E. Riley, (TAMU, 31ex.); Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/13/08, recently abandoned E. burchelli bivouac, A. Tishechkin, EXO-00079 (AKTC, 1ex.); Orellana, Payamino Research Station (-0.4933, -77.2914), 300 m, 7/30/07–8/12/07, FIT, Tropical Rainforest, CPDT Gillett (NHMUK, 4ex.). Colombia: Vaupes, Est. Biol. Caparu, Rio Apoporis (-1.1, -69.5), 9/27/95–12/1/95, FIT, Black-water terrace forest on sandy soils, B. Gill (AKTC, 2ex.); Vaupes, Parco Nac. Mosiro-Itajura (Caparu) Centro Ambiental (-1.0667, -69.5167), 60 m, 1/20/03–1/30/03, FIT, D. Arias & M. Sharkey, EXO-03170 (10ex.); Peru: Loreto, Explornapo Lodge, 160 km NNE Iquitos (-3.2713, -72.8883) xii.29.1997, FIT, M.V.L. Barclay (NHMUK, 2ex.); Loreto, 1.5 km N Teniente Lopez (-2.5943, -76.1153), 210–240 m, 7/22–24/93, FIT, R. Leschen (SEMC, 3ex.); Loreto, Campamento San Jacinto (-2.3125, -75.8628), 175–215 m, 7/7/93, FIT, R. Leschen (SEMC, 3ex.); Loreto, Iquitos (-3.74, -73.27), 90 m, 5/5–7/92, FIT, J. Danoff-Berg (SEMC, 3ex.); Loreto, Iquitos – Nauta rd., km 58, Rio Itaya (-4.2563, -73.4675), 120 m, 5/5/09–5/9/09, FIT, next to entrance into Eciton burchelli statary bivouac in a hollow treee, A.V. Petrov, EXO-03139 (AKTC, 1ex.).

Other material

Bolivia: Santa Cruz, 5 km SSE Buena Vista, Flora y Fauna Hotel (-17.4987, -63.6521), 12/15/03–12/24/03, FIT, S. & J. Peck, EXO-03172 (AKTC, 1ex.); Santa Cruz, ~ 5 km SSE Buena Vista, Flora y Fauna Hotel, 17.498°S, 63.652°W, 440 m, flight intercept trap, 24–31.xii.2003, S. & J. Peck (AKTC, 2ex.); Brazil: Acre, Cruzeiro do Sul (-7.6333, -72.6), January-February 1988, FIT (CHND, 7ex.); Amapá, Serra do Navio (0.9833, -52), 5/1/91–5/14/91, FIT, EXO-03150 (CHND, 1ex.); Maranhão, Mirador, Caicarinha (-6.3667, -44.3667), 5/1/93, FIT, EXO-03152 (CHND, 1ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau (-9.8167, -58.2767), 12/15/10–12/18/10, FIT, F.Z. Vaz-de-Mello & A.F. Oliveira (CEMT, 4ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Mata Norte (-9.8192, -58.26), 12/8/10–12/14/10, FIT, F.Z. Vaz-de-Mello (CEMT, 7ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), December 2010, FIT, F.Z. Vaz-de-Mello, EXO-03157 (CEMT, 1ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), October 2009, FIT, F.Z. Vaz-de-Mello (CEMT, 5ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), December 2009, FIT, F.Z. Vaz-de-Mello, EXO-03156 (CEMT, 1ex.); Mato Grosso, Municip. Tangara da Serra, Fazenda Diamante (-14.313, -57.5317), 515 m, 12/14/13, gallery forest, FIT, F. Génier & L. Sawaris (CMNC, 1ex.); Mato Grosso, Mpio. Querencia, Fazenda São Luiz (-12.597, -52.3749), February 2009, FIT, R. Andrade (CEMT, 2ex.); Mato Grosso, Sinop (-11.8167, -55.4833), 6/12/85–6/24/85, FIT (CHND, 3ex.); Mato Grosso do Sul, Corumba, Passo da Lontra (-19.965, -57.07), 6/19/08, pitfall trap, no data, DZUP 272500 (DZUP, 1ex.); Pará, Ilha Arapiuns (-2.4, -54.95), 12/30/08–12/31/08, FIT (CHND, 6ex.); Pará, Monte Alegre (-2, -54.07), 6/17/92–7/3/92, FIT (CHND, 3ex.); Pará, Tucuruí (-3.75, -49.667), 11/28/89–12/11/89, FIT, EXO-03148 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), August 1984, FIT (CHND, 3ex.); French Guiana: Montagne des Chevaux (4.7167, -52.4), 1/18/09, 2/23/09 and 4/11/09, FIT, SEAG (CHND, 3ex.); Guyana: Region 8, Iwokrama Field Stn., Iwokrama Forest, 1 km W Kurupukari (4.6719, -58.6844), 60 m, 5/20/01–5/25/01, FIT, R. Brooks, Z. Falin, SM0567396 (SEMC, 1ex.); Region 8, Iwokrama Field Stn., Iwokrama Forest, 26 km SW Kurupukari, Iwokrama Mt. Base camp (4.3381, -58.8106), 100 m, 5/22/01–5/25/01, FIT, R. Brooks, Z. Falin, SM0572778 (SEMC, 1ex.); Peru: Cusco, Villa Carmen Fld Stn., 12.89221°S, 71.41946°W, 555 m, 24–26.V.2011, DJ Bennett, FIT (SEMC, 1ex.); Junín, ~ 16 km NW Satipo, Rio Venado (-11.1989, -74.7705), 1110 m, 2/19/10–2/22/10, A.V. Petrov (AKTC, 4ex.); Junín, ~ 15 km NW Satipo, nr. Rio Venado at 11°11.18'S, 74°46.02'W, 1100–1400 m, 4/20/19–5/18/19, A. V. Sokolov (AVSC, 1ex.); Madre de Dios, Cocha Cashu Bio. Stn., Manu Nat. Park (-11.8958, -71.4067), 350 m, 10/17/00–10/19/00, FIT, R. Brooks, EXO-03125 (CMNC, 5ex.); Madre de Dios, Cocha Cashu Bio. Stn., Manu Nat. Park (-11.8958, -71.4067), 350 m, 10/17/00–10/19/00, FIT, R. Brooks (SEMC, 18ex.); Madre de Dios, Cocha Salvador, Manu National Park (-12.0036, -71.5267), 310 m, 10/20/00–10/21/00, FIT, R. Brooks (SEMC & CMNC, 21ex.); Madre de Dios, Tambopata, Res. Cuzco Amazonico, 15 km NE Puerto Maldonado (-12.55, -69.05), 200 m, 6/20/89, FIT, J. Ashe, R. Leschen (CHSM & SEMC, 6ex.); Madre de Dios, Amazonas Lodge, N Atalaya (-12.87, -71.3767), 480 m, 11/10/07–11/13/07, FIT, D. Brzoska (SEMC, 2ex.); Madre de Dios, Pantiacolla Lodge, 2–7 km NW El Mirador Trail, Alto Madre de Dios River (-12.6528, -71.2578), 450–700 m, 10/23/00–10/26/00, FIT, R. Brooks (SEMC, 4ex.); Madre de Dios, Pantiacolla Lodge, 8 km NW El Mirador Trail, Alto Madre de Dios River (-12.6417, -71.2781), 800 m, 10/23/00–10/26/00, FIT, R. Brooks (SEMC, 9ex.); Madre de Dios, Pantiacolla Lodge, Alto Madre de Dios R. (-12.655, -71.2317), 420 m, 11/14/07–11/19/07, FIT, D. Brzoska (SEMC, 21ex.); Madre de Dios, Pantiacolla Lodge, Alto Madre de Dios River (-12.6561, -71.2319), 400 m, 10/23/00–10/26/00, FIT, R. Brooks (SEMC, 2ex.); Madre de Dios, Rio Los Amigos, CICRA(Puerto) (-12.5709, -70.1018), 230 msm, 8/5/06, basurero de Eciton, A. Asenjo (MUSM Lima, 2ex.); Huánuco Monson Valley, Tingo Maria (-9.3, -76), 11/2/54, E.I. Schlinger & E.S. Ross, EXO-03140 (CASC, 1ex.); Suriname: Commewijne, Akintosoela, 32 km SE Suriname River bridge, road to Redi Doti (5.2714, -54.9208), 40 m, 6/29/99–7/3/99, FIT, Z. Falin, B. DeDijn, A. Gangadin, SM0176662 (SEMC, 1ex.); Pará, Zanderij, nr. Guesthouse (5.4583, -55.2167), 2/9/10–2/18/10, FIT, C. Gillet, P. Skelley, W. Warner, EXO-03168 (FSCA, 1ex.); Sipaliwini, CI-RAP Surv. Camp 1: on Kutari River (-2.1753, -56.7874), 228 m, 8/19/10–8/24/10, FIT, Larsen & Short (SEMC, 4ex.); Sipaliwini, CI-RAP Surv. Camp 1: upper Palumeu River (2.4770°N, 55.6294°W), 275 m, FIT, 3/10/12–3/16/12, A.E.Z. Short (SEMC, 1ex.); Sipaliwini, CI-RAP Surv. Camp 4: on lower Kasikasima River (-2.9773, -55.3850), 200 m, 3/20/12–3/25/12, FIT, T. Larsen (AKTC & SEMC, 8ex.).

Diagnostic description

Length: 1.65–2.05 mm (avg. 1.89 mm); width: 1.50–1.77 mm (avg. 1.62 mm). This species is extremely similar to the preceding (P. serratus), but differs consistently in being broader in body form (Fig. 7E), having the median portion of the frontal stria detached from the lateral portions rather than continuous across the frons, the pronotal disk more strongly depressed along the lateral margin, and in having sparser dorsal ground punctation, along with slightly lower density of secondary lateral pronotal punctures. The male genitalia exhibit no obvious differences from that of the P. serratus (Fig. 8C, D).

Etymology

This species name refers to its being a near twin of the preceding.

Distribution

This species’ distribution broadly overlaps the preceding, covering much of northern South America. It does not extend into Central America, however, and records are very few in the Guianas.

Remarks

As discussed under the preceding species, these are two very similar species, easily distinguished from all others by their unusual protibiae, but minimally different from each other. The description covers all characters that we have been able to find to distinguish them. We have restricted the type series to a relatively small number of localities in eastern Ecuador and Colombia, and northern Peru.

11. Phelister parana sp. nov.

http://zoobank.org/B4130E05-1ED8-419A-A6EE-0BADF47DE8D3

Figs 7G, H, 8E, F, Map 7

Type material

Holotype male: “Brazil: Piraquara, Mananciais da Serra, 1,000 m, 25°29.77'S, 48°58.90'W, Arm. intercep. de vôo. 17–31.x.2007, FIT, P. Grossi & D. Parizotto” / “Caterino/Tishechkin Exosternini Voucher EXO-00424” (DZUP). Paratypes (9): Brazil: Paraná, Mananciais da Serra (-25.4934, -48.9786), 12/9/11–12/11/11, FIT, F.W.T. Leivas, M.S. Caterino & A.K. Tishechkin, EXO-00874 (MSCC, 1ex.); Paraná, Mpio. Curitiba, nr. Campina Grande do Sul (-25.2965, -49.0381), 12/7/11–12/10/11, FIT, F.W.T. Leivas, EXO-00875 (MSCC, 1ex.); Paraná, Piraquara (Sanepar) (-25.4961, -48.9817), 7/18/01, P.C. Grossi (DZUP, CESP, 2ex.); Paraná, Piraquara Mananciais da Serra (-25.4961, -48.9817), 1000 m, 11/23/07–12/1/07, FIT, P. Grossi & D. Parizotto (CHND, 3ex.); Paraná, Piraquara Mananciais da Serra (-25.4961, -48.9817), 1000 m, January 2007, FIT, P. Grossi & D. Parizotto (CHND, 2ex.).

Map 7.

Collecting records for Phelister parana (inverted triangles), P. asperatus (black stars), P. uniformis (white squares), P. miscellus (white hexagons) P. sculpturatus (black circles), P. inbio (white stars) and P. tunki (black upright triangle).

Other material

Brazil: Minas Gerais, Parque Estadual do Itacolomi, Trilha do Forno at 20.4290°S, 43.5075°W, 1350 m, flight intercept trap, 8–9.ii.2014, A. K. Tishechkin (AKTC, 1ex.)

Diagnostic description

Length: 1.81–2.01 mm (avg. 1.89 mm); width: 1.42–1.81 mm (avg. 1.57 mm). This species is very similar to several others in this group, especially P. blairi and to P. erwini, but is unique in a few characters: body elongate (Fig. 7G), almost parallel-sided, with sides weakly rounded, dark rufescent, with conspicuous ground punctation; frons and epistoma deeply depressed along midline, sparsely but doubly punctate; pronotal gland openings just under halfway back on pronotal disk; pronotal disk with conspicuous secondary punctures throughout, sparser but distinct in middle third; marginal pronotal stria broken with inner ends recurved briefly behind eyes; submarginal pronotal stria short and weakly impressed, in anterior corners only; both propygidium and pygidium with dense secondary punctures; prosternal lobe very short, rounded. Male: basal piece ~ 1/3 length of tegmen; tegmen with sides weakly rounded, apices subacute, weakly separated; tegmen weakly curved, flatter toward apex, in lateral view; weak medioventral process present in basal 1/3; median lobe ~ 1/2 tegmen length, basal apodemes abruptly thinner near bases.

Etymology

We name this species for the state of its primary occurrence, Paraná, Brazil.

Distribution

This species is only known from a relatively small area in coastal southeastern Brazil.

Remarks

The description presents all of this species’ distinguishing characters.

12. Phelister asperatus sp. nov.

http://zoobank.org/163C6211-C1F1-4563-84B6-407C7AF80F9C

Figs 9A, B, 10A, B, Map 7

Type material

Holotype male: “Brazil, Rio de Janeiro: Nova Friburgo, Sans Souci, 9–15/XI/2009, E. Grossi (leg.)” / “Interceptação de vôo (FIT)” / “DZUP272524” (DZUP).

Figure 9.

A, B Phelister asperatus: A dorsal habitus B ventral habitus C, D P. uniformis: C dorsal habitus D ventral habitus E, F P. miscellus: E dorsal habitus F ventral habitus G, H P. inbio: G dorsal habitus H ventral habitus.

Figure 10.

Male genitalia A, B Phelister asperatus: A aedeagus, dorsal B aedeagus, lateral C, D P. uniformis: C aedeagus, dorsal. D aedeagus, lateral E, F P. miscellus: E aedeagus, dorsal F aedeagus, lateral G P. inbio: Aedeagus, dorsal.

Diagnostic description

Length: 1.50 mm; width: 1.22 mm. Body small, elongate oval, convex, rufescent, with conspicuous ground punctation and coarse secondary punctures uniformly intermixed on pronotum, more sparsely so on elytron; frons and epistoma somewhat narrow, deeply depressed along midline, doubly punctate; supraorbital stria present, separated from sides of frontal; frontal stria complete, fine across median depression; epistoma raised, subcarinate along sides; labrum emarginate and subcarinate apically; mandibles each with very small basal tooth; antennal club elongate with conspicuous setose patch on dorsal surface; prescutellar impression forming an elongate triangle with rounded bases, slightly wider than scutellum; pronotal disk densely, doubly punctate; median pronotal gland openings obscured by punctures; marginal pronotal stria complete along sides and front; submarginal pronotal stria obscure, vaguely present as disconnected series of punctures around anterior corner only; elytron with single, complete epipleural stria; outer subhumeral stria present in apical 1/2 only, inner subhumeral vaguely represented by series of punctures; dorsal striae 1–4 complete, 4^th arched to sutural stria, 5^th and sutural stria nearly complete, fragmented at bases; propygidium uniformly doubly punctate; prosternal keel emarginate at base, striae separate at base, sinuate, united anteriorly; prosternal lobe short, reflexed, with complete marginal stria; mesoventrite produced, with complete marginal stria continued at sides by postmesocoxal stria, which ends freely at middle of lateral portion of metaventrite; mesometaventral stria angulate at middle, crenulate, reaching middle of mesoventrite, continued at sides by lateral metaventral stria to middle of metacoxa; middle portion of metaventrite mainly with conspicuous ground punctation; 1^st abdominal ventrite with secondary punctures more densely intermingled, with incomplete lateral stria along inner margin of metacoxa; protibia with outer margin rounded, weakly dentate, with ~ five marginal spines; protarsal setae of male not flattened; meso- and metatibiae slightly broadened, with a few spines along outer margins. Male: basal piece nearly 1/2 length of tegmen; tegmen with sides weakly rounded, apices subacute, weakly separated; tegmen mostly straight in lateral view; medioventral process present in basal 1/3; median lobe ~ 2/3 tegmen length, basal apodemes abruptly thinner near bases.

Etymology

This species name refers to its asperate, or rough appearance.

Distribution

This species is only known from the type locality, Brazil: Rio de Janeiro.

Remarks

This species is straightforward to recognize, particularly assuming it is restricted in distribution to southeastern Brazil. It has an unusual pattern of sculpture, with the pronotum densely doubly punctate, and the elytra less densely and mostly singly punctate. Among all the strongly punctate species in this group it is particularly small and elongate. Its elytral striae are also quite distinctive, appearing as double series of large punctures connected by a relatively fine stria.

13. Phelister uniformis sp. nov.

http://zoobank.org/DD4DE726-F0FE-484E-91F6-4CE5A3836701

Figs 9C, D, 10C, D, Map 7

Type material

Holotype male: “Suriname: Sipaliwini: CI-RAP Surv. Camp 1: on Kutari River, 228 M, 2°10.521'N, 56°47.244'W, 27.viii.2010, flight intercept trap, 19–24.viii.2010, Larsen & Short” / “Caterino/Tishechkin Exosternini Voucher EXO-00579” (SEMC). Paratypes (10): “Guyane Française: Bélvédère de Saül, point de vue. 3°37'22"N, 53°12'34"W. Piège vitre, 7.ii.2011. SEAG leg.” (AKTC, MSCC, CHND & MNHN, 8 ex.); same locality, collector and method, but 2.ix.2010 (DZUP & CHND, 2 ex.).

Diagnostic description

Length: 1.69–2.09 mm (avg. 1.93 mm); width: 1.46–1.81 mm (avg. 1.68 mm). Body ovoid, sides quite rounded, slightly flattened, dark rufescent, with conspicuous ground punctation (and little secondary punctation) on nearly all surfaces; frons and epistoma deeply depressed along midline; supraorbital stria in middle third only; frontal stria complete, very fine in median depression; sides of epistoma subcarinate; labrum short, emarginate apically; each mandible with very small basal tooth; antennal club elongate, with extended setose patch along dorsal surface; prescutellar impression weakly triangular, about as long as, and 1.5 × as wide as scutellum; pronotum without lateral secondary punctures; median pronotal gland openings ~ 3/4 behind anterior margin, distinct, annulate; marginal pronotal stria complete along front and sides, weakly crenulate in front; lateral submarginal stria complete, barely turned inward anteriorly, the marginal bead weakly convex; elytral epipleuron with single, complete marginal stria; outer subhumeral stria present basally and apically, narrowly interrupted at middle, inner subhumeral stria present in apical 1/2 to 2/3; dorsal striae 1–3 complete, stria four present but fragmented along most of its length, with distinct basal arch to suture, stria five very weakly impressed in apical 1/2, sutural stria complete, meeting basal arch; propygidium with few larger secondary punctures sparsely intermingled with dense ground punctation; pygidium with dense ground punctation only; prosternal keel emarginate at base, striae complete, separate at base, converging to middle, close and parallel anteriorly, united in narrow apical arch; keel with distinct, annulate gland openings; prosternal lobe rounded, with complete marginal stria; mesoventrite produced, with complete marginal stria continued at sides by postmesocoxal stria nearly to middle of lateral portion of metaventrite; mesometaventral stria bluntly angulate at middle, reaching middle of mesoventrite, continued by lateral metaventral stria to middle of metacoxa; mesoventrite, anterior and lateral portions of metaventrite, and sides of 1^st abdominal ventrite with conspicuous, transversely reticulate microsculputure; 1^st abdominal ventrite with single, incomplete lateral stria, also with distinct, annulate gland opening along inner edge of stria; protibia with outer margin distinctly dentate, with five marginal spines; male protarsal setae not expanded; meso- and metatibiae similar, weakly expanded to apex, with few marginal spines mostly confined to apical 1/2. Male: basal piece ~ 1/3 length of tegmen; tegmen with sides widening toward apical 1/4, then narrowed to blunt apices; tegmen rather flat, weakly curved in lateral view; medioventral process present in basal 1/3; median lobe ~ 2/3 tegmen length, basal apodemes abruptly thinner near bases.

Etymology

This species name refers to its relatively ‘uniform,’ fine, even dorsal punctation.

Distribution

This species is known only from French Guiana and Suriname.

Remarks

Among several species with moderately conspicuous ground punctation, P. uniformis is distinctive in lacking larger secondary punctures, having a small, bluntly triangular prescutellar impression, the pronotal glands 2/3 back from anterior margin, the outer subhumeral stria interrupted at middle and the inner present in apical 1/2.

14. Phelister miscellus sp. nov.

http://zoobank.org/3DCB1C33-21F0-4351-97F9-A4C345C73454

Figs 9E, F, 10E, F, Map 7

Type material

Holotype male: “Brazil: Distr. Federal Brasília, Reserva Ecol. de IBGE, Brasília, 15°56.5'S, 47°53'W, Cerrado, flight intercept trap. Oct.1986, I. Diniz” / “Caterino/Tishechkin Exosternini Voucher EXO-00446” (CEMT). Paratypes (10): Brazil: Mato Grosso, Mpio. Diamantino, Vale da Solidão (-14.3638, -56.123), 640 m, 26.i.2009, FIT, D.C.T. Oliveira (CEMT, 1ex.); Mato Grosso, Mpio. Diamantino, Vale da Solidão (-14.3638, -56.123), 640 m, February 2009, FIT, D.C.T. Oliveira (CEMT, 2ex.); Mato Grosso do Sul, cerradão fragment nr. Selvíria (-20.3354, -51.4095), 11/30/11–12/3/11, FIT, M. Caterino & A. Tishechkin, EXO-00857 (UNESP, 1ex.); Mato Grosso do Sul, cerradão fragment nr. Selvíria at 20°20'10"S, 51°24'36"W, 390 m, window traps, ground to 1.5 m above ground, 27.xi.2010–11.ii.2011, C. A. H. Flechtmann (UNESP, 6ex.)

Other material

Brazil: Pará, Altamira – Marabá, km18. 3°09'S, 52°03'W. FIT, v.1984 (CHND, 1ex.); Peru: Junín, 11 km NE Puerto Ocopa, Los Olivos (-11.05, -74.2587), 1200 m, 3/29/09–3/30/09, FIT, A. Tishechkin, EXO-00670 (AKTC, 1ex.); Madre de Dios, Los Amigos Field Station, Manu (-12.5434, -70.1343), 284 m, 1/2/07–1/11/07, pitfall trap, Pacal terra firma forest, J. Jacobs, EXO-03042 (CASC, 1ex.); Madre de Dios, Pantiacolla Lodge, 2–7 km NW El Mirador Trail, Alto Madre de Dios River (-12.6528, -71.2578), 450–700 m, 10/23/00–10/26/00, FIT, R. Brooks, SM0261459 (SEMC, 1ex.); Cusco, Villa Carmen Fld Stn., 12.87753°S, 71.40153°W, 555–1000 m, 20–30.V.2011, DJ Bennett, misc. hand collecting (SEMC, 1ex.); Madre de Dios, CICRA Field Stn., ~ 2 km NW cafeteria res. plot. 12.55236°S, 70.10989°W, 295 m, Flight intrcept. 7–9.vi.2010, Chaboo Team (SEMC, 1ex.).

Diagnostic description

Length: 1.81–2.01 mm (avg. 1.90 mm); width: 1.38–1.58 mm (avg. 1.47 mm). Body quite elongate, weakly rounded to almost parallel-sided, rufescent, with moderately conspicuous ground punctation throughout; frons broad, distinctly punctate, depressed along midline; supraorbital stria present for middle-3/4, abbreviated at sides; frontal stria interrupted at sides, present within median depression; epistoma weakly depressed; labrum smooth, flat emarginate; mandibles lacking basal teeth; prescutellar impression forming semi-circle ~ 2.5 × width of scutellum; median pronotal gland openings rather obscure among dense ground punctation, located within small impunctate areas ~ 2/3 behind anterior pronotal margin, not annulate; pronotal disk with secondary punctures only slightly larger than ground punctation, intermingled more densely from middle to lateral margin; marginal pronotal stria complete along lateral and anterior margins, crenulate at front; elytron with single, complete epipleural stria; outer subhumeral stria complete, inner absent; dorsal striae 1–4 complete, 4^th arched to suture, 5^th stria present in apical 2/3, sutural stria in apical 3/4; pygidia with moderately coarse secondary punctation, slightly sparser posterad; prosternal keel emarginate at base, striae separate at base, converging, united near apex; prosternal lobe weakly reflexed, rather narrow, with marginal stria complete; mesoventrite narrowly produced, with complete marginal stria continued by postmesocoxal stria nearly to base of metepisternum; mesometaventral stria bluntly angulate at middle, weakly crenulate, reaching middle of mesoventrite, continued at sides by lateral metaventral stria, reaching inner 1/3 of metacoxa; 1^st abdominal ventrite with single, complete lateral stria, bent posterad at inner posterior corner of metacoxa; middle of ventrites with only sparse ground punctation; protibia with outer margin somewhat rounded, weakly dentate, with six or seven marginal spines; mesotibia slightly broadened, with five or six long marginal spines; metatibia more slender, with two or three fine spines limited to apical 1/2. Male: basal piece ~ 1/3 length of tegmen; tegmen narrow, with sides widening toward apical fourth, then narrowed to bluntly rounded apices; tegmen rather thick, bent near base in lateral view; medioventral process absent; median lobe ~ 1/2 tegmen length, basal apodemes abruptly thinner near bases.

Etymology

This species name refers to the mixed, or ‘miscellaneous,’ small and large punctures on the dorsum.

Distribution

This species is known from southern Peru and south-central Brazil.

Remarks

Phelister is distinctive in a several features, especially its elongate body form, doubled pronotal punctation, broad prescutellar impression, and complete lack of lateral submarginal pronotal stria. Its apical three protibial marginal spines also form a distinctly larger set than those closer to the base.

15. Phelister inbio sp. nov.

http://zoobank.org/F9476786-6F64-46E0-8D04-F813D7D60C3B

Figs 9G, H 10G, Map 7

Type material

Holotype male: “P.N. Tapantí, Prov Carta, Costa Rica. 1150 m. Mar 1994. G. Mora, L N 194000_559800 #2681” / “INBIO CRI001733668” (INBIO). Paratype (1): “Est. Pitilla, 700 m, 9 km S. Sta. Cecilia, P. N. Guanacaste, Prov. Guan. COSTA RICA. P.Rios, 4–25 Nov 1991,L-N-330200_380200” / “INBIO CRI000497380” (MNCR).

Diagnostic description

Length: 2.60–2.68 mm (avg. 2.64 mm); width: 2.05–2.13 mm (avg. 2.09 mm). Body elongate, rather narrow, widest behind elytral humeri, rufescent, with conspicuous ground punctation throughout, the pronotum with uniformly dense secondary punctation as well; frons moderately depressed along midline, supraorbital stria present, fine, disconnected at sides; frontal stria complete, epistoma raised, subcarinate along sides and front; labrum emarginate but not subcarinate along apical margin; both mandibles with conspicuous basal tooth; pronotum with large, semicircular prescutellar impression, ~ 5 × scutellar width; median pronotal gland openings obscured by secondary punctures but present just beyond midway behind anterior margin, distinctly annulate; marginal pronotal stria complete along lateral and anterior margins; lateral submarginal stria complete, clearly impressed, just turning anterior corner; elytron with single, complete epipleural stria; outer subhumeral stria complete, characteristically bent inward along basal elytral margin, inner absent; dorsal striae 1–4 complete, 4^th arched to sutural, 5^th obsolete in basal 1/3, sutural stria complete; pygidia with uniformly sparse secondary punctation; prosternal keel narrow, emarginate at base, striae separate at base, converging then subparallel to apex, united anteriorly; prosternal lobe narrowed, weakly reflexed, with marginal stria complete; mesoventrite produced, with complete marginal stria continued at sides by postmesocoxal stria ending laterad mesocoxa; mesometaventral stria angulate at middle, crenulate, reaching anterior 1/3 of mesoventrite, continued at sides by lateral metaventral stria, reaching middle of metacoxa; 1^st abdominal ventrite with incomplete lateral stria along inner margin of metacoxa; ventrites with rather uniformly sparse secondary punctation, the metaventrite largely impunctate along midline; protibia with outer margin strongly dentate, with five or six marginal spines; meso- and metatibiae slightly broadened, the mesotibia with rather robust spines along outer margin, those of metatibia fewer and finer. Male: basal piece ~ 1/3 length of tegmen; tegmen with sides unevenly widening toward apical fourth, then weakly narrowed to rounded apices; tegmen rather flat, weakly curved in lateral view; weak medioventral process present near middle; median lobe narrow, ~ 1/2 tegmen length, basal apodemes abruptly thinner near bases.

Etymology

By this species name we honor the institution and effort that was the Instituto Nacional de Biodiversidad (INBio), now part of the MNCR. The parataxonomists and professional taxonomists engaged in the effort to document Costa Rica’s biodiversity provided a successful model to which the rest of the world could aspire.

Distribution

This species is only known from Costa Rica.

Remarks

This species is very distinctive, particularly among the Central American Exosternini fauna. Its narrow, uniformly doubly punctate pronotum, broadly oval prescutellar impression, complete outer subhumeral stria with basomedial extension, and basally connected 4^th and sutural elytral striae distinguish it from anything else in the region.

16. Phelister sculpturatus Schmidt, 1893

Figs 11A, B, 12A, B, Map 7

Phelister sculpturatus Schmidt, 1893a: 12.

Type material

Lectotype , of undetermined sex, hereby designated: “Mexique” / “coll. J. Schmidt” / “Type” / “sculpturatus Schm.” / “Lectotype Phelister sculpturatus Schmidt, 1893, M.S.Caterino & A.K.Tishechkin des. 2010”; ZMHB.

Figure 11.

A, b Phelister sculpturatus: A dorsal habitus B ventral habitus C, D P. tunki: C dorsal habitus D ventral habitus E, F P. praedatoris: E dorsal habitus F ventral habitus G, H P. ifficus: G dorsal habitus H ventral habitus.

Other material

Brazil: Mato Grosso, Mpio. Cuiaba, Fazenda Mutuca (-15.3145, -55.9703), 11/15/08, FIT, F.H. Gava & J. R. Rocha, EXO-02973 (CEMT, 1ex.); Costa Rica: Cartago, P.N. Tapanti, Quebrada Segunda (9.76, -83.79), 1250 m, February 1993, G. Mora, INBIO CRI001 359423 (INBIO, 1ex.); Guanacaste, Cacao Biological Station (10.9272, -85.4519), 1050 m, 7/10/00–7/11/00, FIT, J. Ashe, R. Brooks, Z. Falin, SM0245385 (SEMC, 1ex.); Puntarenas, Est. Biol. Las Cruces (8.7857, -82.9697), 1330 m, 5/28/04–5/31/04, FIT, J. Ashe, Z. Falin, I. Hinojosa, SM0611403 (SEMC, 1ex.); Puntarenas, Est. Sirena, P.N. Corcovado (8.48, -83.59), 0–100 m, October, 1990, C. Saborio, INBIO CRI000 293821 (INBIO, 1ex.); Puntarenas, 11 km S.W. Est. Biol. Las Cruces (8.7786, -83.0306), 1450 m, 7/9/99, wet cloud forest litter, R. Anderson, EXO-02969 (CMNC, 1ex.); Puntarenas, Rancho Quemado, Peninsula de Osa (8.7, -83.6), 200 m, September 1992, M. Segura, INBIO CRI000 907726 (INBIO, 1ex.); Ecuador: Orellana, Est. Biodiv. Tiputini (-0.6333, -76.0383), 220 m, 9/5/00–9/25/00, D. Inward & K. Jackson, EXO-02972 (NHMUK, 1ex.); Orellana, Est. Biodiv. Tiputini (-0.6376, -76.1499), 6/4/11–6/9/11, FIT, M. Caterino & A. Tishechkin, EXO-00707 (MSCC, 1ex., DNA voucher); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 7/18–7/24/08, FIT, A. K. Tishechkin (AKTC, 1ex.); Guatemala: Suchitepéquez: Volcán Atitlán, Ref. El Quetzal, 1670 m, 14.55067°N, 91.19235°W, 13–13.vi.2015, Z.Falin & F.Carrillo, FIT, cloud forest (SEMC, 2ex.); Honduras: Olancho, La Union, La Muralla (15.1, -86.7), 9/1/94, R. Cordero, EXO-02970 (AKTC, 1ex.); Mexico: Veracruz, 3 km S Jalapa (19.5, -96.9), 1370 m, 5/26/91, FIT, J. Ashe, EXO-02971 (SEMC, 1ex.); Panama: Canal Zone, Barro Colo. Is. (9.2, -79.8), 1/30/55, Eciton burchelli refuse deposit, Colony ‘55 B1, Satary Day, C.W. Rettenmeyer (UCONN, 2ex.); Canal Zone, Barro Colorado I (9.2, -79.8), 5/9/56, E-156RD Berlese, C.W. & M.E. Rettenmeyer, EXO-02976 (UCONN, 1ex.); Canal Zone, Barro Colorado I. (9.2, -79.8), 3/28/56, Eciton burchelli Bivouac Site Colony E-132RD, C.W. Rettenmeyer, EXO-02975 (UCONN, 1ex.); Canal Zone, Barro Colorado Island (9.2, -79.8), 3/30/63, refuse deposit, Host: Eciton hamatum colony E-321, EXO-02977, UCONN (1ex.); Colon, P.N. San Lorenzo, Achiote (9.2167, -80.1067), 10 m, 5/13/08–5/28/08, FIT, A. Mercado, EXO-02980 (AKTC, 1ex.); Colon, San Lorenzo Forest (9.2833, -79.9667), 10/3/03–10/4/03, FIT, A. Tishechkin, EXO-02979 (AKTC, 1ex.); Colon, San Lorenzo Forest (9.2833, -79.9667), 10/24/03–10/25/03, FIT, A. Tishechkin, EXO-00376 (AKTC, 1ex.); Colon, San Lorenzo Forest (9.2833, -79.9667), 5/12/04–5/13/04, FIT, A. Tishechkin, EXO-02981 (AKTC, 1ex.); Panama, Barro Colorado Isd. (9.1833, -79.85), 7/8/94, FIT, D. Banks (SEMC, 2ex.); Darien, Darien National Park, Camp Pirre, Rancho Frio, 8°1'11"N, 77°43'57"W, 100 m, 6–13.ii.2014, L. G. Bezark (AKTC, 1ex.); Peru: Junín, 11 km NE Puerto Ocopa, Los Olivos (-11.05, -74.2587), 1200 m, 3/26/09–3/31/09, FIT, A. Tishechkin (AKTC, 2ex.); Loreto, Iquitos – Nauta rd. km 58, Rio Itaya (-4.2563, -73.4675), 120 m, 5/5/09–5/9/09, FIT, next to entrance into Eciton burchelli statary bivouac in a hollow treee (AKTC, 3ex.).

Diagnostic description

Length: 1.73–2.09 mm (avg. 1.85 mm); width: 1.54–1.77 mm (avg. 1.64 mm). Body elongate oval, convex, dark rufescent, with densely intermingled ground and secondary punctation throughout; frons rather wide, depressed along midline; supraorbital stria present at middle, obsolete at sides; frontal stria complete; epistoma obliquely subcarinate along sides; labrum emarginate and subcarinate apically; mandibles each with small basal tooth; antennal club with elongate setose patch on dorsal surface; prescutellar impression wide, forming a short rounded triangle 2–3 × as wide as scutellum; median pronotal gland openings present ~ 2/3 back from anterior margin, distinctly annulate; pronotal punctation doubled throughout, but more sparsely so in middle third; marginal pronotal stria complete along sides and front; submarginal pronotal stria complete, raised, close to margin, barely turning anterior corner; elytron with two complete epipleural striae; outer subhumeral stria complete, inner subhumeral nearly complete, obsolete at base; dorsal striae 1–4 complete, the 4^th arched to and usually connected to the sutural, 5^th slightly abbreviated from base, sutural stria complete or nearly so; prosternal keel narrow, emarginate at base, striae separate at base, evenly converging to near apex, united anteriorly; prosternal lobe shortly, weakly reflexed, with marginal stria complete; mesoventrite produced, with complete marginal stria continued at sides by postmesocoxal stria, ending behind mesocoxa; mesometaventral stria angulate at middle, crenulate, reaching middle of mesoventrite, continued at sides by lateral metaventral stria nearly reaching outer 1/3 of metacoxa; 1^st abdominal ventrite with incomplete lateral stria along inner margin of metacoxa; protibia with outer margin strongly dentate, with ~ five marginal spines; protarsal setae of male not flattened; meso- and metatibiae slightly broadened, with a few spines along outer margins. Male: basal piece nearly 1/2 length of tegmen; tegmen narrow at base, expanded then subparallel over most of length, apices rounded, slightly separated; tegmen flattened, slightly curved in lateral view; medioventral process present, projecting at basal fourth; median lobe ~ 1/2 tegmen length, basal apodemes abruptly narrowed at bases.

Distribution

This species ranges from southeastern Mexico, through Central America to south-central Brazil.

Remarks

This widespread and variable species has much in common with P. praedatoris, especially in the nearly complete coverage of ground and secondary punctation. However, P. sculpturatus always has its inner elytral striae distinct amongst the punctures, is slightly more elongate in overall body form, and has the protibia less strongly dentate. The distributions of the two species don’t appear to overlap, with P. sculpturatus known only from cerrado and western Amazonia in South America (beyond its more typical range in Central America). Like P. praedatoris, it appears to be an army ant associate, having been collected a few times (in both Peru and Panama) in Eciton bivouacs, though most records come only from flight interception traps.

17. Phelister tunki sp. nov.

http://zoobank.org/928A79D3-9205-4386-B061-30F14B0B8C0F

Fig. 11C, D, Map 7

Type material

Holotype female: “Peru: Dept. Cusco: Cock of the Rock Lodge, NE Paucartambo 13°03.3'S, 71°32.7'W 1120 m, 4–9-XI-2007, D.Brzoska, ex. Flight intercept trap, PER1B07 001” / “SEMC0870736 KUNHM-ENT” (SEMC).

Diagnostic description

Length: 2.25 mm; width: 2.05 mm. This species is extremely similar to the preceding, and differs in only a few unusual characters: body larger; median pronotal gland openings nearer halfway back from anterior margin; frontal stria obsolete in median depression, frons with distinct microsculpture; antennal club with two distinct dorsal and one ventral setal sensory patch basal to elongate median patch (Fig. 11C); propygidium more coarsely and densely punctate; protibia slightly broader; lateral metaventral stria divergent toward mesepimeron. Male not known.

Etymology

This species name, tunki, is the local name of the Andean cock-of-the-rock (Rupicola peruvianus), a beautiful and popular bird in the area, for which the lodge at the type locality was named.

Distribution

This species is only known from the type locality, Cusco, Peru.

Remarks

Although this species is known only from a singleton, from a locality on the margin of the range of its closest relative P. sculpturatus, there are enough clear morphological differences between the two to support its separate species status.

18. Phelister praedatoris Reichensperger, 1939

Figs 11E, F, 12C, D, Map 8

Phelister praedatoris Reichensperger, 1939: 281.

Phelister praedatorius Mazur, 1984: 284, 1997: 28, 2011: 28 (misspelling).

Type material

Lectotype , hereby designated: “F. Plaumann Nova Teutonia Brasilien” / “Eciton praedator” / “Phelister praedatoris Reichensp.”; Bonn (not seen). Paralectotypes (3), hereby designated: same data as type (CHND, FMNH-INS0000069298 and FMNH-INS0000069356, examined by the authors).

Figure 12.

Male genitalia A, B Phelister sculpturatus: A aedeagus, dorsal B aedeagus, lateral C, D P. praedatoris: C aedeagus, dorsal D aedeagus, lateral E, F P. ifficus: E aedeagus, dorsal F aedeagus, lateral.

Other material

Brazil: Santa Catarina, Nova Teutonia (-27.1833, -52.3833), 22.vi.1939, F. Plaumann, E. praed. , EXO-00005 (NHMUK, 1ex.); Santa Catarina, Nova Teutonia (-27.1833, -52.3833), i[?].14.193[?], F. Plaumann, (FMNH-INS0000069239, 1ex.); Santa Catarina, Nova Teutonia (-27.1833, -52.3833), x.-.1939, F. Plaumann, (FMNH, 1ex.); Santa Catarina, Nova Teutonia (-27.1833, -52.3833), 1953, F. Plaumann, FMNH-INS 0000 069 305 (FMNH, 2ex.); Santa Catarina, Nova Teutonia (-27.1833, -52.3833), May 1953, F. Plaumann, EXO-02984 (FMNH, 1ex.); Santa Catarina, Nova Teutonia (-27.1833, -52.3833), April 1952, F. Plaumann, Host: Labidus praedator (FMNH, 3ex.); Santa Catarina, Nova Teutonia (-27.1833, -52.3833), 1951, F. Plaumann, Eciton (Lab.) praedator (FMNH, 2ex.); Santa Catarina, Nova Teutonia (-27.1833, -52.3833), ii.1959, F. Plaumann, with Eciton prey [maybe an error in transcription?] (FMNH, 9ex.); Santa Catarina, Nova Teutonia (-27.1833, -52.3833), no date, F. Plaumann (FMNH, 1ex.).

Map 8.

Collecting records for Phelister vazdemelloi (black circles), P. praedatoris (white star), P. ifficus (black squares), P. genieri (hexagon), and P. marginatus (black stars).

Diagnostic description

Length: 1.97–2.52 mm (avg. 2.18 mm); width: 1.69–2.13 mm (avg. 1.92 mm). Body elongate oval, convex, dark rufescent, with densely intermingled ground and secondary punctation throughout; frons rather wide, moderately depressed along midline; supraorbital stria present at middle, obsolete at sides; frontal stria complete; epistoma subcarinate along sides; labrum emarginate and subcarinate apically; mandibles each with small basal tooth; antennal club with elongate setose patch on dorsal surface; prescutellar impression small, forming an oval ~ equal in size to scutellum; median pronotal gland openings present ~ 3/4 from anterior margin, distinctly annulate, vaguely obscured by punctures; marginal pronotal stria complete along sides and front; submarginal pronotal stria complete, close to margin, barely turning anterior corner; elytron with single, complete epipleural stria; outer subhumeral stria complete, but may be interrupted at middle, inner subhumeral nearly complete, obsolete at base; dorsal striae one and two usually complete, 3^rd present in basal 1/2 only, 4^th and 5^th largely or completely absent, though a basal arch of the 4^th may be traceable, sutural stria may be traceable in apical 1/2; prosternal keel narrowed, emarginate at base, striae separate at base, converging and subparallel to near apex, united anteriorly; prosternal lobe reflexed, with marginal stria complete or obsolete at middle; mesoventrite produced, with complete marginal stria continued at sides by postmesocoxal stria, which ends behind mesocoxa; mesometaventral stria angulate at middle crenulate, reaching middle of mesoventrite, continued at sides by lateral metaventral stria toward but not reaching middle of metacoxa; 1^st abdominal ventrite with faint, incomplete lateral stria along inner margin of metacoxa; protibia with outer margin strongly dentate, with ~ five marginal spines; protarsal setae of male not flattened; meso- and metatibiae slightly broadened, with a few spines along outer margins. Male: aedeagus very narrow, basal piece ~ 1/3 length of tegmen; tegmen with sides subparallel over most of length, weakly narrowed at middle, apices rounded; tegmen slightly curved in lateral view; medioventral process present, projecting at basal 1/3; median lobe ~ 2/3 tegmen length, basal apodemes abruptly narrowed at bases.

Distribution

While the species is well represented in collections, it seems still only to be known from the type locality (in Santa Catarina, Brazil), and only in association with army ants (both Labidus and Eciton are recorded as hosts).

Remarks

Phelister praedatoris was one of the first species in this group to be described, and it remains among the most distinctive, with its inner elytral striae largely obliterated by dense secondary elytral punctation. Few other species treated here are as thoroughly doubly punctate, including on the thoracic and abdominal ventrites, the principal exceptions being the species treated immediately below. Additional distinctive characters include its unusually strongly dentate protibiae, and a raised outer subhumeral stria that almost forms a lateral elytral margin (aligned with the strongly raised marginal pronotal bead).

19. Phelister ifficus sp. nov.

http://zoobank.org/51DDD357-0476-4F11-8B7B-5481761978EC

Figs 11G, H, 12E, F, Map 8

Type material

Holotype male: “Bolivia: Cochabamba, 117 km E Cochabamba, at Lagunitas, 1000 m, 17°06'22"S, 65°40'57"W, 1–6.II.1999, F. Génier, mountain evergreen forest, ex. f.i.t. 99-029” / “Caterino/Tishechkin Exosternini Voucher EXO-00001” (CMNC). Paratype (2): Peru: Junín: ~ 16 km NW Satipo, Rio Venado, 11°11.677'S, 74°46.137'W, 1150 m, 3–8. March 2010, A.V. Petrov, Caterino/Tishechkin Exosternini Voucher EXO-02993 (AKTC, 1ex.); Junín, ~ 15 km NW Satipo, nr. Rio Venado at 11°11.18'S, 74°46.02'W, 1100–1400 m, 4/20/19–5/18/19, A. V. Sokolov (AVSC, 1ex.).

Diagnostic description

Length: 3.27–3.43 mm (avg. 3.35 mm); width: 2.80–2.84 mm (avg. 2.82 mm). Body elongate oval, slightly depressed, dark rufescent, with conspicuous double punctation throughout, the ground punctation coarse and uniformly intermingled with moderately large secondary punctures; frons rather broad, depressed along midline; supraorbital stria present at middle; frontal stria interrupted at middle; epistoma subcarinate along sides; labrum emarginate and subcarinate apically; mandibles each with small basal tooth; antennal club elongate, with small setose patch near apex of dorsal surface; prescutellar impression small and weak; median pronotal gland openings obscured by punctures, but distinctly annulate and present about midway from anterior margin; marginal pronotal stria complete around lateral and anterior margins; lateral submarginal pronotal stria complete, pronotal disk weakly impressed along its inner edge; elytron with single, complete epipleural stria; outer subhumeral stria interrupted at middle, inner absent; all dorsal striae finely impressed as a series of punctures, complete, with 4^th arched to sutural, 5^th not quite attaining basal arch; pygidia densely punctate; prosternal keel emarginate at base, striae separated at base, sinuate to united apex; prosternal lobe rounded, with marginal stria complete; mesoventrite produced, its marginal stria complete, continued by postmesocoxal stria toward anterior third of mesepimeron; mesometaventral stria weakly impressed, bluntly angulate at middle; lateral metaventral stria diverging to side, barely separated from postmesocoxal; 1^st abdominal ventrite with incomplete lateral stria along inner edge of metacoxa; all ventrites punctate; all tibia slightly broadened; protibia with outer margin strongly dentate, bearing four or five marginal spines; protarsal setae of male not flattened; meso- and metatibiae slightly broadened, mesotibia with several conspicuous spines along outer margins, those of metatibia fewer and finer. Male: basal piece 1/3 length of tegmen; tegmen narrow at base, weakly and unevenly expanded to near apex, apices rounded; tegmen flattened, mostly straight but apically curved in lateral view; medioventral process present, projecting at basal fourth; median lobe ~ 1/2 tegmen length, basal apodemes abruptly narrowed at bases.

Etymology

This species name is a play on the full binomial, together forming -ter ifficus, in reference to its attractive morphology.

Distribution

This species only known from two localities, in the Andean foothills of central Peru and Bolivia.

Remarks

This species seems to be part of a monophyletic lineage, also comprising the following three species. Phelister ifficus is much more densely punctate than the most similar of them, P. vazdemelloi, as well as more elongate, yet not markedly flattened or laterally explanate like P. genieri and P. marginatus are. The two available specimens of this species differ slightly in the appearance of the prescutellar area, the Peruvian specimen having a very weak depression, and the Bolivian one having only a tiny smooth area with a puncture.

20. Phelister genieri sp. nov.

http://zoobank.org/D5C97694-8DF0-41F5-AC4B-474C29AE092D

Figs 13A, B, 14A, B, Map 8

Type material

Holotype male: “Bolivia: Cochabamba, 105 km E Cochabamba, at Rio Carmen Mayo, 1800 m, 17°08'47"S, 65°43'55"W [17.1464, -65.7319], 6–8.II.1999, F. Génier, low yungas forest, ex. f.i.t. 99-033” / “Caterino/Tishechkin Exosternini Voucher EXO-00379” (CMNC). Paratype (1): Cochabamba, 117 km E Cochabamba at Lagunitas (-17.1061, -65.6825), 1000 m, 2/8/99–2/12/99, FIT, mountain evergreen forest, F. Génier, EXO-02994 (CMNC, 1ex.).

Figure 13.

A, B Phelister genieri: A dorsal habitus B ventral habitus C, D P. marginatus: C dorsal habitus D ventral habitus E, F P. vazdemelloi: E dorsal habitus F ventral habitus G, H P. dilatatus: G dorsal habitus H ventral habitus.

Diagnostic description

Length: 2.52–2.76 mm (avg. 2.64 mm); width: 2.21–2.40 mm (avg. 2.30 mm). Body broadly rounded, depressed, sides explanate, rufescent, with very dense and conspicuous ground punctation throughout; frons rather broad, depressed along midline; supraorbital stria absent; frontal stria complete; epistoma subcarinate along sides; labrum emarginate and subcarinate apically; mandibles each with small basal tooth; antennal club elongate, with small setose patch near apex of dorsal surface; prescutellar impression absent; median pronotal gland openings small, obscured by punctures, but present ~ 2/3 from anterior margin; marginal pronotal stria complete, fine, continued around anterior margin; submarginal pronotal stria present close to marginal as a raised carina, disk deeply depressed along its inner edge; elytron with single, complete epipleural stria; outer subhumeral stria complete beneath strong lateral elytral carina, which may be the complete inner subhumeral stria; dorsal striae shallowly impressed but distinct, all complete, with 4^th arched to sutural; pygidia densely covered with elongate punctures, pygidium weakly differentiated, with flat anterodorsal surface and short, curved posteroventral surface, similarly punctate throughout; prosternal keel slightly depressed, emarginate at base, striae obsolete; prosternal lobe weakly reflexed, with marginal stria complete; mesoventrite produced, its marginal stria weakly impressed, continued by postmesocoxal stria toward but not reaching middle of mesepimeron; mesometaventral stria weakly impressed, angulate at middle; lateral metaventral stria diverging to side, subparallel to postmesocoxal; 1^st abdominal ventrite with incomplete lateral stria along inner edge of metacoxa; all ventrites punctate; all tibia slightly broadened; protibia with outer margin strongly dentate, bearing four or five marginal spines; protarsal setae of male not flattened; meso- and metatibiae slightly broadened, with a few spines along outer margins. Male: basal piece 1/3 length of tegmen; tegmen narrow at base, weakly and unevenly expanded to near apex, apices rounded; tegmen quite flattened, only weakly curved in lateral view; medioventral process present, projecting at basal fourth; median lobe almost 1/2 tegmen length, basal apodemes abruptly narrowed at bases.

Etymology

We are pleased to name this species in honor of François Génier, collector of the type, and contributor of numerous valuable specimens to our histerid studies.

Distribution

This species is only known from the type locality, Cochabamba, Bolivia.

Remarks

As described above, this species is part of a related lineage comprising the preceding one and following two species. It is particularly close to P. marginatus but is easily distinguished by the much coarser dorsal punctation, and distinct elytral striae. Its body is also not so broad, and its sides less broadly explanate.

Figure 14.

Male genitalia A, B Phelister genieri: A aedeagus, dorsal B aedeagus, lateral C, D P. marginatus: C aedeagus, dorsal D aedeagus, lateral E, F P. vazdemelloi: E aedeagus, dorsal F aedeagus, lateral G, H P. dilatatus: G aedeagus, dorsal H aedeagus, lateral.

21. Phelister marginatus sp. nov.

http://zoobank.org/205FD7E7-C774-46CD-85A3-812371CA5D9A

Figs 13C, D, 14C, D, Map 8

Type material

Holotype male: “Costa Rica: Puntarenas, Monte Verde [10.3, -84.8], 1520 m, 4 May 1989, J. Ashe, R. Brooks, R. Leschen, ex. flight intercept trap” / “SEMC0903646 KUNHM-ENT (SEMC). Paratypes (2): Costa Rica: Limon, Valle de la Estrella, R.B. Hitoy Cerere, Camino a S. Toma de Agua (9.67, -83.02), 160 m, 9/30/99–10/9/99, W. Arana, INB0003142728 (INBIO, 1ex.); Puntarenas, Est. Biol. Las Alturas (8.9362, -82.8335), 1660 m, 5/31/04–6/3/04, FIT, J. Ashe, Z. Falin, I. Hinojosa, SM0606778 (SEMC, 1ex.).

Diagnostic description

Length: 2.64–2.80 mm (avg. 2.71 mm); width: 2.48–2.56 mm (avg. 2.52 mm). Body broadly rounded, depressed, sides explanate, rufescent, with very dense and conspicuous ground punctation throughout; frons rather broad, moderately depressed along midline; supraorbital stria absent; frontal stria interrupted across median depression; epistoma subcarinate along sides; labrum emarginate and subcarinate apically; mandibles each with small basal tooth; antennal club elongate, with small setose patch near apex of dorsal surface; prescutellar impression absent, at most faintly depressed; median pronotal gland openings small, obscured by punctures, but present ~ 2/3 from anterior margin; marginal pronotal stria complete, fine, continued around anterior margin; submarginal pronotal stria present close to marginal as a raised carina, disk deeply depressed along its inner edge; elytron with single, complete epipleural stria; outer subhumeral stria complete beneath strong lateral elytral carina, which may be the complete inner subhumeral stria; dorsal striae faintly impressed, only a few vaguely traceable, primarily the complete sutural stria; propygidium flat, densely covered with elongate punctures, pygidium with flat anterodorsal surface punctate, and short, curved posteroventral surface impunctate but shagreened; prosternal keel narrowed, emarginate at base, striae narrowly separate at base, converging and subparallel to near apex, united anteriorly; prosternal lobe reflexed, with marginal stria complete; mesoventrite produced, its marginal stria only faintly impressed; postmesocoxal stria present, not reaching mesepimeron; mesometaventral stria absent across middle; lateral metaventral stria forming a short stria parallel to postmesocoxal; all ventrites punctate; all tibia slightly broadened; protibia with outer margin strongly dentate, bearing four or five marginal spines; protarsal setae of male not flattened; meso- and metatibiae slightly broadened, with a few spines along outer margins. Male: basal piece 1/3 length of tegmen; tegmen narrow at base, evenly widened, rounded to near apex, apices rounded; tegmen curved to apex in lateral view; medioventral process present, projecting at basal fourth; median lobe ~ 1/3 tegmen length, basal apodemes abruptly narrowed at bases.

Etymology

The name of this species refers to the carinate margins of the pronotum and elytra.

Distribution

This species is known only from Costa Rica, from Limón and Puntarenas provinces.

Remarks

As described above, this species is part of a related lineage comprising the preceding two and the following species. Phelister marginatus is easily distinguished by its broad, flattened, laterally carinate and explanate body, along with its largely effaced elytral striae.

22. Phelister vazdemelloi sp. nov.

http://zoobank.org/FC0FAC03-AEBC-490F-BB20-B6B7BE340218

Figs 13E, F, 14E, F, Map 8

Type material

Holotype male: “Brazil: Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Prainha. -9°51.6'S, -58°12.9'W [-9.86, -58.215], Flight intercept, Oct 2009, F.Z. Vaz-de-Mello” / “Caterino/Tishechkin Exosternini Voucher, EXO-00853” (CEMT). Paratypes (6): Brazil: Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau (-9.815, -58.2858), 12/15/10–12/18/10, FIT, F.Z. Vaz-de-Mello & A.F. Oliveira (CEMT, 2ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Mata Norte (-9.8192, -58.26), 12/8/10–12/14/10, FIT, F.Z. Vaz-de-Mello (FMNH & MSCC, 2ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), December 2010, FIT, F.Z. Vaz-de-Mello (AKTC & CHND, 2ex.).

Diagnostic description

Length: 2.05–2.44 mm (avg. 2.25 mm); width: 1.85–2.29 mm (avg. 2.05 mm). Body rather broadly rounded, widest behind elytral humeri, rufescent, with conspicuous ground punctation throughout, the pronotum with uniformly dense secondary punctation as well; frons depressed along midline; frontal stria obsolete within median depression; epistoma broad, with raised edges along sides and front; labrum emarginate, weakly subcarinate along apical margin; mandibles lacking basal teeth; prescutellar impression not evident; median pronotal gland openings only slightly larger than secondary punctures, ~ 1/3 behind anterior margin, distinctly annulate; marginal pronotal stria complete along lateral and anterior margins; submarginal stria complete, well-impressed along lateral margin, just turning anterior corner; elytron with single, complete epipleural stria; outer subhumeral stria present at base and apex but interrupted at middle; inner subhumeral stria present at middle but obsolete at ends; all dorsal striae complete, 4^th arched to sutural, with 5^th nearly meeting basal arch; pygidia with moderately coarse secondary punctation; prosternal keel emarginate at base, striae separate at base, converging, meeting ¾ of the distance to apex, united anteriorly; prosternal lobe weakly reflexed, with marginal stria complete; mesoventrite weakly produced, with complete marginal stria continued at sides by postmesocoxal stria ending laterad mesocoxa; mesometaventral stria angulate at middle, crenulate, reaching middle of mesoventrite, continued at sides by lateral metaventral stria, reaching middle of metacoxa; 1^st abdominal ventrite with nearly complete lateral stria along inner margin of metacoxa; metaventrite with coarse secondary punctation; 1^st abdominal ventrite with secondary punctures largely limited to anterior third; protibia with outer margin weakly dentate, with five or six robust marginal spines; meso- and metatibiae slender, the mesotibia spinose along most of outer margin, metatibia with marginal spines finer and restricted to apical 1/2. Male: basal piece 1/3 length of tegmen; tegmen narrow at base, widest at basal 1/3, then rounded, narrowing to apex, apices rather thin, slightly separated; tegmen very flattened, straight with weak apical curve in lateral view; medioventral process present, projecting at basal fourth; median lobe ~ 1/2 tegmen length, basal apodemes abruptly narrowed at bases.

Etymology

This species is named in honor of our friend and colleague, Fernando Vaz-de-Mello. Fernando’s lab and the collection he runs (CEMT) have provided many specimens to our studies, and he and his students graciously hosted the authors during a 2011 field trip to Mato Grosso.

Distribution

This species is only known from Mato Grosso, Brazil.

Remarks

This species and the preceding three (P. marginatus, P. genieri, and P. ifficus) form a closely related lineage within this group. All have lost a distinct prescutellar impression and are considerably larger in body size than average for the group. All also have more or less ‘complete’ elytral striation, uniformly double (ground and secondary) punctation on the dorsum, and have slightly expanded and strongly punctate protibiae. Phelister vazdemelloi is the least modified of these, with relatively sparse dorsal punctation, and a convex body.

23. Phelister dilatatus sp. nov.

http://zoobank.org/8D3A519B-0ED5-4FE1-BA9A-F7D2EF91318A

Figs 13G, H, 14G, H, Map 9

Type material

Holotype male: “Guyane Française: Montagne des Chevaux 4°43'N, -52°24'W [4.7167, -52.4] piège d’interception 27 Juin 2009. SEAG leg.” / “Caterino/Tishechkin Exosternini Voucher EXO-00370 (MNHN). Paratypes (9): French Guiana: Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 9/22/10, FIT, SEAG, EXO-02991 (CHND, 1ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 8/4/09, FIT, SEAG, EXO-02990 (CHND, 1ex.); Belvédère de Saül, point de vue (3.6228, -53.2094), 12/10/10, FIT, SEAG, EXO-02992 (CHND, 1ex.); Montagne des Chevaux (4.7167, -52.4), 5/2/09, FIT, SEAG, EXO-02988 (CHND, 1ex.); Montagne des Chevaux (4.7167, -52.4), 5/16/09, FIT, SEAG, EXO-02989 (CHND, 1ex.); Montagne des Chevaux (4.7167, -52.4), 6/13/09, FIT, SEAG, EXO-03041 (CHND, 1ex.); Bélizon. 4.2769, -52.6435. 45m. Jan 2017. J.L..Guiglaris (CHND, 1ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 4.vii.2009, FIT, SEAG (CHND, 1ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 11.vii.2010, FIT, SEAG (CHND, 1ex.).

Map 9.

Collecting records for Phelister dilatatus (stars), and P. spectabilis (circles).

Diagnostic description

Length: 2.96–3.51 mm (avg. 3.21 mm); width: 2.56–3.84 mm (avg. 2.70 mm). Body large, elongate oval, strongly convex, castaneous to piceous; most surfaces conspicuously punctate; head with frons depressed along midline, produced above antennal bases, ground punctures not reticulate; supraorbital stria absent; frontal stria complete, continued above epistoma, also apparently continued anterad by lateral marginal epistomal carina; epistoma not constricted at base, elevated along anterior margin, labrum short, apex weakly emarginate; mandibles with incisor edges rather short, each with weak basal marginal tooth; pronotum broad, uniformly densely punctate; distinct prescutellar impression absent, prescutellar area only faintly depressed; median pronotal gland openings simple, not annulate, located ~ 2/3 from anterior margin; lateral submarginal stria complete, deeply impressed; lateral marginal stria complete and continuous with anterior marginal; elytron with one complete epipleural stria and a secondary epipleural striole between it and the margin over the metafemur; outer subhumeral striae complete, with outer basal appendix (i.e., appearing y-shaped); inner subhumeral slightly abbreviated from base; all other dorsal striae complete, 5^th stria arched to sutural; punctures of elytral disk distinctly interconnected by fine reticulations; propygidium large, midline length equal to that of pygidium; prosternal keel emarginate at base, with primary striae anteriorly connected ~ 1/3 short of presternal suture, divergent at base; secondary striae present along basal 1/2 of keel; prosternal lobe rounded, with complete marginal stria; mesoventrite with strong median projection; marginal mesoventral stria may be weakly interrupted at middle, continued by postmesocoxal stria nearly to metepisternum; mesometaventral stria strongly angulate at middle, extending anteriad to anterior third of mesoventrite, extending to mesocoxa at sides, not directly connected by lateral metaventral stria, which extends posterolaterally to posterior third of metepisternum; 1^st abdominal ventrite with single, incomplete lateral stria along inner edge of metacoxa; all tibiae (but not femora) broadly expanded; protibia with inner edge straight, outer edge deeply toothed, with five marginal spines; tarsi compressed, the tarsomeres together little longer than the tibiae are broad. Male: basal piece long, > 1/2 length of tegmen; tegmen widest near base, narrowed at basal 1/3, then weakly widening to apex, apices rounded; tegmen rather thick, mostly straight with weak apical bend in lateral view; medioventral process present, projecting at basal fourth; median lobe ~ 1/2 tegmen length, basal apodemes abruptly narrowed at bases.

Etymology

This species name refers to its broad, ‘dilated’ tibiae.

Distribution

This species is only known from French Guiana.

Remarks

This is a distinctive species, superficially quite similar to P. amazoniae and P. arcuatus in the large convex body size with expanded tibiae (which we assert to be convergences). But the non-explanate pronotum and ‘normal’, non-expanded femora of the present species will easily separate it from the others. Its anteriorly split (y-shaped) outer subhumeral stria is unique among species treated in this paper.

24. Phelister spectabilis sp. nov.

http://zoobank.org/87349FF2-C9E6-4381-AE82-35F75E313B2D

Figs 15A, B, 16A–F, Map 9

Type material

Holotype male: “Ecuador: Orellana, P.N. Yasuní, Est. Cienc. Yasuní 0°40.5'N, 76°24'W [-0.675, -76.4]. Flight intercept FIT#6-6. 17–19.vii.2008, A.K.Tishechkin AT924” / “Caterino DNA Voucher, Extraction: MSC-2187, Species: Enigm nr.dubEcu, Extraction Date: viii.16.2011” / “Caterino/Tishechkin Exosternini Voucher EXO-00697” (FMNH). Paratypes (4): Ecuador: Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/19/08–7/24/08, FIT, A. Tishechkin, EXO-00697 (AKTC, 1ex.); Orellana, Est. Biodiv. Tiputini (-0.6333, -76.0383), 220 m, 9/5/00–9/25/00, D. Inward & K. Jackson (NHMUK, 2ex.); Orellana, Est. Biodiv. Tiputini (-0.6367, -76.1483), 7/27/08–7/31/08, FIT, A. Tishechkin, EXO-00808 (AKTC, 1ex.).

Figure 15.

A, B Phelister spectabilis: A dorsal habitus B ventral habitus C, D P. pervagatus: C dorsal habitus D ventral habitus.

Other material

Colombia: Vaupes, Est. Biol. Caparu, Rio Apoporis (-1.1, -69.5), 9/27/95–12/1/95, FIT, Black-water terrace forest on sandy soils, B. Gill, EXO-00377 (AKTC, 1ex.); French Guiana: Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 1/25/11, FIT, SEAG, EXO-02983 (CHND, 1ex.); Saül, 7 km N, 3 km NW Les Eaux Claires, Mt. La Fumée (3.6628, -53.2219), 490 m, 6/1/97–6/8/97, FIT, J. Ashe & R. Brooks, SM0096747 (SEMC, 1ex.).

Diagnostic description

Length: 2.68–2.96 mm (avg. 2.84 mm); width: 2.32–2.64 mm (avg. 2.43 mm). Body large, elongate, dark-rufescent, nearly parallel-sided, smooth, with fine inconspicuous ground punctation; supraorbital stria complete, forming a carina between upper margin of eyes; frons broad, widened anteriorly, deeply depressed at middle; frontal stria complete, raised as a sinuate transverse carina; epistoma deeply depressed at middle, sides raised, subcarinate; labrum wide, emarginate; mandibles lacking basal teeth; antennal club elongate; pronotum lacking prescutellar impression, disk without secondary lateral punctures; pronotal gland openings small, annulate, located just beyond middle of disk; lateral submarginal pronotal stria complete, deeply impressed, curving inward and joining anterior marginal stria, marginal bead raised laterad; anterior marginal stria separated from lateral portions of marginal stria; elytra with single, complete epipleural stria; outer subhumeral stria complete, forming a strong lateral marginal carina, other dorsal striae reduced, those present displaced laterad, carinate, inner subhumeral present as very short apical carina, stria one complete, 2^nd present in apical 2/3, 3^rd represented only by scratch-like basal vestige; other dorsal striae absent; propygidium with depressions on either side, disk with secondary punctures mainly at sides; pygidium with broken marginal stria, disk punctate along lateral and apical margins; prosternal keel elevated, narrow, emarginate at base, with complete striae united anteriorly; prosternal lobe short, marginal stria complete; mesoventrite deeply sulcate at sides, raised along midline, marginal stria obscured; postmesocoxal stria present, recurved to mesepimeral-metepisternal corner; mesometaventral stria absent at middle, lateral metaventral stria very short, divergent, ending freely behind mesocoxa; median portions of metaventrite and 1^st abdominal ventrite impunctate, the latter with incomplete lateral stria along metacoxa; protibia with outer margin strongly dentate, with five marginal spines; male protarsus with modified setae; meso- and metatibiae with fine marginal spines. Male: basal piece 1/4 length of tegmen; tegmen narrow at base, weakly expanded to just beyond middle, narrowed to rounded apices; tegmen flattened at base and apex, thicker in middle in lateral view; medioventral process absent; median lobe ~ 1/3 tegmen length, basal apodemes narrower toward bases.

Etymology

The ‘spectacular,’ highly autapomorphic general morphology of this species inspires its name.

Distribution

This species is known from two disjunct areas, Amazonian Ecuador and Colombia in the west, and French Guiana far to the east.

Remarks

This very distinctive species is easily recognized by its elongate body form, carinate outer elytral striae, and obsolete inner elytral striae (including the sutural stria). The deep pits on the mesoventrite are also unique among Neotropical Exosternini. It lacks a distinct prescutellar impression, and its relationship to others in this group is not very clear. Its annulate pronotal gland openings near the middle of the pronotal disk do seem to support relationships somewhere in this group, however.

Specimens from the rather disjunct areas reported here differ somewhat. In Guianan specimens the frons is slightly broader, the supraorbital stria is connected to the frontal stria at the sides; the lateral submarginal pronotal stria is joined to the anterior marginal, and the lateral epistomal carinae is less prominent. Even the aedeagus is a bit more parallel-sided and apically quadrate. We considered separating these as distinct, but expect that additional specimens from intervening gaps will fill these minor morphological gaps.

Figure 16.

Male genitalia A–F Phelister spectabilis: A tergite 8 B sternite 8 C tergites 9 & 10 D sternite 9 E aedeagus, dorsal F aedeagus, lateral G, H P. pervagatus: G aedeagus, dorsal H aedeagus, lateral.

25. Phelister pervagatus sp. nov.

http://zoobank.org/B15A0C51-C7F0-4092-811A-F09901F15535

Figs 15C, D, 16G, H, Map 10

Type material

Holotype male: “Ecuador: Orellana: Est. Biodiv. Tiputini, 0.6376°S, 76.1499°W, flight intercepts, 2–9.vi.2011, M.S.Caterino & A.K.Tishechkin, AT1342” / “Caterino/Tishechkin Exosternini Voucher EXO-03282” (FMNH). Paratypes (53): Ecuador: Orellana, Est. Biodiv. Tiputini (-0.6333, -76.0383), 220 m, 9/5/00–9/25/00, D. Inward & K. Jackson (NHMUK, 2ex.); Orellana, Est. Biodiv. Tiputini (-0.6376, -76.1499), 6/2/11–6/9/11, FIT, M. Caterino & A. Tishechkin (MSCC, 3ex., including DNA voucher EXO-00708); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 7/27/08–8/3/08, FIT, A.K.Tishechkin (AKTC & LSAM, 8ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 8/3/08–8/6/08, FIT, LSAM Team (LSAM, 4ex.); Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/11/08–7/26/08, FIT, A. Tishechkin (AKTC & LSAM, 16ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 6/18/99–7/13/99, FIT, C. Carlton & A. Tishechkin (LSAM, 2ex.); Peru: Loreto, 1.5 km N Teniente Lopez (-2.5943, -76.1153), 210–240 m, 7/20–24/93, FIT, R. Leschen (SEMC, 4ex.); Loreto, Campamento San Jacinto (-2.3125, -75.8628), 175–215 m, 7/3/93, FIT, R. Leschen (SEMC, 14ex.).

Map 10.

Collecting records for Phelister pervagatus.

Other material

Bolivia: Pando, nr. Fortaleza, 2.5 km SW of Fortalea del Abuna (-9.7833, -65.5), 120 m, 2/16/96, pitfall human dung, primary floodplain forest, F. Guerra, EXO-03284 (USNM, 1ex.); Pando, nr. Villa Bella (-10.3667, -65.3667), 120 m, 2/25/96, pitfall human dung, slightly disturbed primary forest, F. Guerra (USNM, 2ex.); Pando, Santa Rosa in Manuripi (-12, -68.8667), 180–190 m, 10/24/04, human faeces baited PF trap, terra firme forest, A.C. Hamel & D. Aguirre, EXO-03283 (OUMNH, 1ex.); Brazil: Amazonas, INPA, Manaus (-2.4167, -59.8333), March 1994, Winkler method, Leaf litter, Terra firme fst., R. Didham, EXO-03281 (NHMUK, 1ex.); Distrito Federal, Res. Ecol. do IBGE, Brasília (-15.9416, -47.8833), October, 1986, Cerrado, FIT, I. Diniz, EXO-03271 (AKTC, 1ex.); Distrito Federal, Brasília (-15.73, -47.92), December 1987, F. Vaz de Mello (CHND, 3ex.); Mato Grosso, Mpio. Claudia (-11.4083, -55.325), 10/17/10–10/27/10, FIT, A.F. Oliveira (CEMT, 8ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau (-9.815, -58.2858), 12/15/10–12/18/10, FIT, F.Z. Vaz-de-Mello & A.F. Oliveira (CEMT, 8ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Mata Norte (-9.8192, -58.26), 12/8/10–12/14/10, FIT, F.Z. Vaz-de-Mello, EXO-03274 (CEMT, 1ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), 4/3/09, FIT, F.Z. Vaz-de-Mello (CEMT, 10ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), October 2009, FIT, F.Z. Vaz-de-Mello (CEMT, 5ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), October 2009, FIT, M.S. Gigliotti, EXO-03279 (CEMT, 1ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Prainha (-9.86, -58.215), September 2009, FIT, R.V. Nunes, EXO-03280 (CEMT, 1ex.); Mato Grosso, Fazenda São Nicolau (site 6) (-9.8212, -58.2592), 220 m, 12/3/13, primary forest, FIT, F. Génier (CMNC, 1ex.); Mato Grosso, Mpio. Querencia, Fazenda São Luiz (-12.597, -52.3749), February 2009, FIT, R. Andrade (CEMT, 2ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1984, FIT (CHND, 6ex.); Pará, Barcarena (-1.5, -48.6167), 6/13/91–6/25/91, FIT (CHND, 4ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), 9/26/86–10/6/86, FIT (CHND, 5ex.); Pará, Ilha Arapiuns (-2.4, -54.95), 12/30/08–12/31/08, FIT, EXO-03270 (CHND, 1ex.); Pará, Marajó-Breves (-0.8833, -50.5333), 11/18/87–12/5/87, FIT (CHND, 3ex.); Pará, Redenção (-7.7927, -51.9635), 215 m, October, 1999, FIT (CHND, 3ex.); Pará, Serra dos Carajás, Rio Itacaiunas (-5.8733, -50.48), 1/26/84, S. excr. humain (CHND, 2ex.); Pará, Tucuruí (-3.75, -49.667), 7/10/85–7/29/85, FIT (CHND, 3ex.); Pará, Tucuruí (-3.75, -49.667), 6/19/86–7/7/86, FIT (CHND, 2ex.); Pará, Tucuruí (-3.75, -49.667), 6/23/86–7/7/86, FIT, EXO-03266 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), February 1986, FIT (CHND, 6ex.); Pará, Tucuruí (-3.75, -49.667), April 1986, FIT, EXO-03264 (CHND, 1ex.); French Guiana: Belvédère de Saül, point de vue (3.6228, -53.2094), 12/20/10, FIT, SEAG (CHND, 2ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 11/3/09, FIT, SEAG, EXO-03216 (CHND, 1ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 1/28/10, FIT, SEAG (CHND, 7ex.); Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 7/20/10 and 9/22/10, FIT, SEAG (CHND, 4ex.); Roura (8.4 km SSE) (4.6781, -52.2236), 200 m, 5/29/97–6/10/97, FIT, J. Ashe & R. Brooks, EXO-03211 (CMNC, 1ex.); Saül, 7 km N, 3 km NW Les Eaux Claires, Mt. La Fumée (3.6628, -53.2219), 490 m, 6/1/97–6/8/97, FIT, J. Ashe & R. Brooks, SM0096756 (SEMC, 1ex.); Saül, 7 km N, Les Eaux Claires (3.6628, -53.2219), 220 m, 5/30/97–6/4/97, FIT, J. Ashe & R. Brooks (SEMC, 2ex.); Rés. Forêt des Malgaches, St. Laurent du Maroni (5.5, -54), 10/4/77, Piège + cad. souris, N. Degallier, EXO-03218 (CHND, 1ex.); Maripasoula: Kayodé (3.389, -53.924), December 2005, J. Dalmon (CHND, 3ex.); Maripasoula: Kayodé (3.389, -53.924), October, 2005, J. Dalmon (CHND, 4ex.); Mont tabulaire, Itoupé (3.022, -53.0842), 800 m, 3/17/10, FIT, SEAG (CHND, 38ex.); Mont tabulaire, Itoupé (3.023, -53.0955), 570 m, 3/24/10, FIT, SEAG (CHND, 3ex.); Mont Tabulaire Itoupé (3.0303, -53.1067), 400 m, 3/17/10, FIT, SEAG (CHND, 11ex.); Mont Tabulaire Itoupé (3.0303, -53.1067), 400 m, 3/23/10, FIT, SEAG (CHND, 4ex.); Paracou (5.27, -52.92), November 1996, FIT, P.M. Hammond (NHMUK, 6ex.); Guyana: Mazaruni Potaro, Takutu Mountains (6.25, -58.9167), 12/8/83, FIT, montane rainforest near logging area, P.D. Perkins & W.E. Steiner (USNM, 2ex.); Region 8, Iwokrama Field Stn., Iwokrama Forest, 1 km W Kurupukari (4.6719, -58.6844), 60 m, 5/21/01, Acromyrmex hystrix refuse pile, R. Brooks, Z. Falin (SEMC, 4ex.); Region 8, Iwokrama Field Stn., Iwokrama Forest, 1 km W Kurupukari (4.6719, -58.6844), 60 m, 5/26/01–5/29/01, FIT, R. Brooks, Z. Falin, SM0565329 (SEMC, 1ex.); Region 8, Kabocalli Field Stn., Iwokrama Forest (4.2844, -58.5097), 60 m, 6/3/01–6/5/01, FIT, R. Brooks, Z. Falin (SEMC, 4ex.); Region 8, Iwokrama Forest, 26 km SW Kurupukari, Iwokrama Mt. (4.3339, -58.7883), 400 m, 5/23/01–5/25/01, FIT, R. Brooks, Z. Falin, SM0565198 (SEMC, 1ex.); Region 8, Iwokrama Forest, 26 km SW Kurupukari, Iwokrama Mt. (4.3339, -58.7883), 600 m, 5/23/01–5/25/01, FIT, R. Brooks, Z. Falin (SEMC, 3ex.); Region 8, Iwokrama Forest, 26 km SW Kurupukari, Iwokrama Mt. (4.3339, -58.7883), 300 m, 5/23/01–5/25/01, FIT, R. Brooks, Z. Falin (SEMC, 4ex.); Region 8, Iwokrama Forest, 26 km SW Kurupukari, Iwokrama Mt. Base camp (4.3381, -58.8106), 100 m, 5/22/01–5/25/01, FIT, R. Brooks, Z. Falin, SM0572702 (SEMC, 1ex.); Region 8, Iwokrama Forest, Turtle Mt. summit (4.7325, -58.7336), 290 m, 5/30/01–6/1/01, FIT, R. Brooks, Z. Falin (SEMC, 2ex.); Peru: Madre de Dios, Cocha Cashu Bio. Stn., Manu Nat. Park (-11.8833, -71.4), 360 msm, 3/19/04, En Heces, Larsen & Asenjo, EXO-03256 (MNHN Peru-Lima, 1ex.); Madre de Dios, Pantiacolla Lodge, 2–7 km NW El Mirador Trail, Alto Madre de Dios River (-12.6528, -71.2578), 450–700 m, 10/23/00–10/26/00, FIT, R. Brooks (SEMC, 4ex.); Madre de Dios, Pantiacolla Lodge, 5.5 km NW El Mirador Trail, Alto Madre de Dios River (-12.6528, -71.2578), 500 m, 10/23/00–10/26/00, FIT, R. Brooks (SEMC, 2ex.); Madre de Dios, Pantiacolla Lodge, 8 km NW EL Mirador Trail, Alto Madre de Dios River (-12.6417, -71.2781), 800 m, 10/23/00–10/26/00, FIT, R. Brooks (SEMC, 11ex.); Madre de Dios, Pantiacolla Lodge, Alto Madre de Dios R. (-12.655, -71.2317), 420 m, 11/14/07–11/19/07, FIT, D. Brzoska (SEMC, 57ex.); Madre de Dios, Pantiacolla Lodge, Alto Madre de Dios River (-12.6561, -71.2319), 400 m, 10/23/00–10/26/00, FIT, R. Brooks (SEMC, 10ex.); Madre de Dios, Rio Los Amigos, CICRA (-12.5709, -70.1018), 25/150 m, 11/18/06–11/21/06, FIT, A. Asenjo, EXO-03255 (MUSM Lima, 1ex.); Suriname: Brokopondo, Brownsberg Nature Preserve, Witi Creek Trail (4.9486, -55.1814), 340 m, 6/23/99–6/25/99, FIT, Z. Falin, A. Gangadin, H. Hiwat, SM0166993 (SEMC, 1ex.); Brokopondo, Brownsberg Nature Preserve, Witi Creek Trail (4.9486, -55.1814), 80 m, 6/23/99–6/25/99, FIT, Z. Falin, A. Gangadin, H. Hiwat, SM0178761 (SEMC, 1ex.); Commewijne, Akintosoela (5.2714, -54.9208), 40 m, 7/3/99, FIT, Z. Falin, EXO-03206 (CMNC, 1ex.); Commewijne, Akintosoela, 32 km SE Suriname River bridge, road to Redi Doti (5.2714, -54.9208), 40 m, 6/29/99–7/3/99, FIT, Z. Falin, B. DeDijn, A. Gangadin (SEMC, 2ex.); Commewijne, Akintosoela, CELOS camp, rd. to Redi Doli (5.2714, -54.9208), 50 m, 7/3/99, Z. Falin (CMNC, 2ex.); Marowijne, 15 km NE Palumeu ca (3.45, -55.3667), 160 m, 7/7/99, FIT, Z. Falin (CMNC, 2ex.); Marowijne, Palumeu (3.3489, -55.4383), 160 m, 7/8–9/99, FIT, Z. Falin (CMNC, 5ex.); Marowijne, Palumeu, 15 km NE, on Tapanahony River, trail to Poti Hill (3.45, -55.3667), 160 m, 7/6/99–7/7/99, FIT, Z. Falin, D. Konoe (SEMC, 3ex.); Marowijne, Palumeu, 15 km NE, on Tapanahony River, trail to Poti Hill (3.45, -55.3667), 160 m, 7/7/99, monkey dung, Z. Falin (SEMC, 9ex.); Pará, 11 km SE Zanderij Airport (5.3933, -55.1581), 30 m, 6/20/99, FIT, Z. Falin (CMNC, 3ex.); Saramacca, W. SurinameRd., 108 km WSW Zanderij Airport (5.2269, -55.8817), 30 m, 6/10/99, FIT, Z. Falin, EXO-03201 (CMNC, 1ex.); Saramacca, West Suriname Road, 108 km WSW Zanderij Airport (5.2269, -55.8817), 30 m, 6/8/99–6/10/99, FIT, Z. Falin, B. DeDijn, SM0167116 (SEMC, 1ex.); Saramacca, West Suriname Road, 108 km WSW Zanderij Airport (5.2269, -55.8817), 30 m, 6/8/99–6/10/99, FIT, Z. Falin, B. DeDijn (SEMC, 3ex.); Saramacca, West Suriname Road, 139 km WSW Zanderij Airport (5.15, -56.0667), 40–50 m, 6/10/99–6/14/99, FIT, Z. Falin, B. DeDijn, SM0167011 (SEMC, 1ex.); Saramacca, West Suriname Road, 145 km WSW Zanderij Airport (5.1517, -56.1456), 50 m, 6/10/99–6/14/99, FIT, Z. Falin, B. DeDijn (SEMC, 2ex.); Sipaliwini, CI-RAP Surv. Camp 1: on Kutari River (-2.1753, -56.7874), 228 m, 8/19/10–8/24/10, FIT, Larsen & Short, EXO-03207 (SEMC, 24ex.); Surv. Camp 3: Wehepai SE Kwamala (2.3629, -56.6977), 237 m, 9/3/10–9/7/10, FIT, T. Larsen & A.E.Z. Short (SEMC, 1ex.); Sipaliwini, CI-RAP Surv. Camp 1: upper Palumeu River (2.4770°N, 55.6294°W), 275 m, FIT, 3/10/12–3/16/12, A.E.Z. Short (AKTC & SEMC, 7ex.); Sipaliwini, CI-RAP Surv. Camp 4: on lower Kasikasima River (-2.9773, -55.3850), 200 m, 3/20/12–3/25/12, FIT and dung traps, T. Larsen (AKTC & SEMC, 41ex.).

Diagnostic description

Length: 1.38–1.77 mm (avg. 1.60 mm); width: 1.30–1.62 mm (avg. 1.49 mm). Body rounded, convex, dark rufescent, with moderately conspicuous ground punctation; frons narrow, depressed along midline; supraorbital stria complete, detached at sides from frontal; frontal stria interrupted across depression; epistoma depressed at middle, sides weakly elevated; labrum weakly emarginate; each mandible with subacute basal tooth; sides of pronotum rather abruptly narrowed in anterior third; prescutellar impression subtriangular, rounded at base, ~ 1.5 × width of scutellum; pronotal disk with secondary punctures in lateral thirds; median pronotal gland openings small, annulate, rather widely separated, ~ 2/3 behind anterior margin; marginal pronotal stria complete around front and sides; submarginal striae absent; elytron with single, complete epipleural stria; outer subhumeral stria very short, apical, inner absent; dorsal stria one slightly abbreviated from apex, striae two and three usually complete, becoming fragmented apically, striae four and five represented by series of apical punctures, 4^th also represented by strong, transverse basal arch; sutural stria present in apical 2/3, also becoming series of punctures toward apex; propygidium uniformly punctate, secondary punctures separated by ~ 1.5 × their diameters; pygidium much more finely and sparsely punctate; prosternal keel very broad, shallowly emarginate at base, lacking striae; prosternal lobe very short, also lacking marginal stria; mesoventrite weakly rounded in front, with fine marginal stria continued by very short, fine postmesocoxal stria; mesometaventral stria strongly crenulate, arched forward to middle of mesoventrite, continued by very short lateral metaventral stria; metaventrite and 1^st abdominal ventrite impunctate, but 1^st abdominal ventrite with distinct, annulate gland opening mesad metacoxa; protibia slender, outer margin rounded, weakly dentate, with ~ four marginal spines; male with flattened ventral protarsal setae; meso- and metatibiae very slender, with few fine marginal spines toward apex. Male: basal piece 1/3 length of tegmen; tegmen narrow at base, weakly expanded to near apex, apices rounded; tegmen slightly curved in lateral view; medioventral process absent; median lobe ~ 3/4 tegmen length, basal apodemes long, thin.

Etymology

The name pervagatus approximately translates to widespread, common, which is very true of this species.

Distribution

This species occurs across tropical South America, found in the Guianas, Ecuador, Peru, Bolivia, and across much of central and northern Brazil.

Remarks

This species is quite consistent in its morphology throughout its broad range. It can be easily recognized by its round (not very elongate) body form, broad prosternal keel lacking striae, short prosternal lobe, laterally flattened pronotal margins, lack of lateral submarginal pronotal stria, and apically serially punctate elytral striae. We restrict the type series to a small number of localities around eastern Ecuador (from which we have obtained DNA sequences) and northern Peru.

While the vast majority of specimens of P. pervagatus have been collected by flight interception traps, a few specimens have been collected in leafcutter ant (Acromyrmex hystrix) refuse piles, as well as in dung-baited pitfalls.

P. amazoniae subgroup

This small group of eleven species is well characterized by distinctive genitalic characters. We have only found two external characters that typically co-occur with these, and P. geijskesi is an exception to both of them.

Genitalic characters:

Aedeagus strongly narrowed and bent downward (‘hooked’) apically
Medioventral process of tegmen absent
T10 fused and discretely sclerotized across apical 1/2

External characters

Epistoma with slight pinch in front of antennal bases
Tibiae often broadened, extremely so in some cases

26. Phelister morbidus sp. nov.

http://zoobank.org/23D70694-1379-4B68-9018-1FFD33C5AAA2

Figs 17A, B, 18A, B, Map 11

Type material

Holotype male: “Brazil: Minas Gerais, Águas Vermelhas 15°45'S, 41°28'W [-15.75, -41.4667]. Cad. de serpent. Dec 1983” / “Caterino/Tishechkin Exosternini Voucher EXO-00381” (MNHN).

Figure 17.

A, B Phelister morbidus: A dorsal habitus B ventral habitus C, D P. annulatus: C dorsal habitus D ventral habitus E, F P. sphaericus: E dorsal habitus F ventral habitus G, H P. geijskesi: G dorsal habitus H ventral habitus.

Other material

Brazil: Rio de Janeiro, Nova Friburgo, 17 km S (-22.3845, -42.5583), 750 m, 1/23/00, carrion trap, secondary montane Atlantic forest, F. Génier & S. Ide, SM0809245 (SEMC, 1ex.); Rio de Janeiro, Nova Friburgo, Sans Souci (-22.3, -42.6), 11/9/09–11/15/09, FIT, E. Grossi, DZUP 272506 (DZUP, 1ex.); Rio de Janeiro, Macaé de Cima, Nova Friburgo (-22.3816, -42.4819), 1030 m, 10/1/03–10/31/07, FIT (AKTC & CHND, 3ex.).

Map 11.

Collecting records for Phelister morbidus (circles), P. annulatus (squares), and P. sphaericus (stars).

Diagnostic description

Length: 1.77–2.17 mm (avg. 2.02 mm); width: 1.58–1.81 mm (avg. 1.72 mm). Body elongate oval, convex, very faintly bicolored, rufescent with elytra slightly darker than pronotum or pygidia, ground punctation inconspicuous, very fine and sparse; frons depressed along midline; supraorbital stria present, detached from sides of frontal; frontal stria complete or with central portion detached from sides (type); epistoma with sides angularly subcarinate; labrum shallowly emarginate at apex; mandibles lacking basal teeth; pronotum with semicircular prescutellar impression, slightly broader than scutellum; pronotal disk with numerous secondary punctures in lateral thirds; marginal pronotal stria complete along sides and front; submarginal striae absent; elytron with single complete epipleural stria; outer subhumeral stria present in apical 1/2, inner absent; dorsal striae 1–4 complete, 4^th arched to suture, 5^th present in apical 1/2, sutural stria present in apical 2/3; all dorsal striae finely impressed; propygidium with secondary punctures rather dense in basal 2/3, sparser apically; pygidium with secondary punctures only in basal 1/3; prosternal keel emarginate at base, rather broad, flat, with striae united along base and weakly convergent, meeting anteriorly; prosternal lobe short, lacking marginal stria; mesoventrite produced at middle, with complete marginal stria continued at side by postmesocoxal stria, which is short, ending freely behind outer edge of coxa; mesometaventral stria angulate at middle, reaching anterior third of mesoventrite, continued by lateral metaventral stria to middle of metacoxa; 1^st abdominal ventrite impunctate, with single, incomplete lateral stria; protibia with outer margin weakly dentate, with ~ six marginal spines; outer margins of meso- and metatibiae with few fine marginal spines; all tarsi with ventral setae at least moderately flattened. Male: aedeagus very elongate, narrow; basal piece 1/4 length of tegmen; tegmen narrowed from base to apex, apices strongly hooked; medioventral process absent; median lobe ~ 1/2 tegmen length, thin.

Etymology

With two specimen records coming from carrion traps, this species is named for its ‘morbid’ apparent interest in dead carcasses.

Distribution

This species is only known from a couple localities in east-central Brazil (Rio de Janeiro and Minas Gerais).

Remarks

This species can best be recognized by the combination of its detached central portion of the frontal stria, the relatively broad prosternal keel, and the lack of a stria along the margin of the prosternal lobe. Due to the broad distributional gap between the known localities, we restrict the type series to the single holotype specimen from Minas Gerais (from which we illustrated the male genitalia).

Figure 18.

Male genitalia A, B Phelister morbidus: A aedeagus, dorsal B aedeagus, lateral C, D P. annulatus: C aedeagus, dorsal D aedeagus, lateral E, F P. sphaericus: E aedeagus, dorsal F aedeagus, lateral G, H P. geijskesi: G aedeagus, dorsal H aedeagus, lateral.

27. Phelister annulatus sp. nov.

http://zoobank.org/275E370E-A018-47DA-8051-D3DD6A6A051F

Figs 17C, D, 18C, D, Map 11

Type material

Holotype male: “Brazil: Pará, Belém, Utinga (IPEAN) 1°27'S, 48°26'W [-1.45, -48.4333] Piège d’interception. x.1986” / “Caterino/Tishechkin Exosternini Voucher EXO-03176 (CEMT). Paratypes (29): Brazil: Amapá, Serra do Navio (0.98, -52.00), 5/1/91–5/14/91, FIT, EXO-03177 (CHND, 1ex.); Mato Grosso, Sinop (-11.8167, -55.4833), 6/12/85–6/24/85, FIT, EXO-03175 (CHND, 1ex.); Pará, Altamira – Marabá, km 18 (-3.15, -52.05), 11/22/83, Ss. cad. de rat. (CHND, 2ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), May 1985, FIT (CHND, 3ex.); Pará, Tucuruí (-3.75, -49.667), 6/19/86–7/7/86, FIT, EXO-03179 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), June 1985, FIT (CHND, 2ex.); Ecuador: Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 6/24/99–6/26/99, Dead fish trap, late stage, C. Carlton, LSAM 0045449 (LSAM, 1ex.); French Guiana: Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 11/9/10, FIT, SEAG, EXO-03184 (CHND, 1ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 11/3/09, FIT, SEAG, EXO-03183 (CHND, 1ex.); Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 1/25/11, FIT, SEAG (CHND, 1ex.); Belvédère de Saül, point de vue (3.6228, -53.2094), 11/31/2010, FIT, SEAG (CHND, 2ex.); Montagne des Chevaux (4.7167, -52.4), 9/21/08, FIT, SEAG, EXO-00369 (CHND, 1ex.); Montagne des Chevaux (4.7167, -52.4), 12/16/08–01/18/09, FIT, SEAG (AKTC & CHND, 8ex.); Montagne des Chevaux (4.7167, -52.4), 5/16/09, FIT, SEAG, EXO-03181 (CHND, 1ex.); Montagne des Chevaux (4.7167, -52.4), 7/11/09, FIT, SEAG (CHND, 2ex.); Peru: Loreto, Iquitos – Nauta rd., km 58, Rio Itaya (-4.2563, -73.4675), 120 m, 5/5/09–5/9/09, FIT, next to entrance into Eciton burchelli statary bivouac in a hollow tree, A.V. Petrov, EXO-00368 (AKTC, 1ex.).

Diagnostic description

Length: 2.40–2.56 mm (avg. 2.44 mm); width: 1.89–2.25 mm (avg. 2.08 mm). Body elongate, sides almost subparallel, dark rufescent to piceous, with conspicuous ground punctation; frons broadly impressed along midline, with sparse small punctures intermingled with ground punctation; supraorbital stria present, detached at sides; frontal stria complete, fine; epistoma raised along lateral and anterior margins; labrum emarginate, apical margin subcarinate; mandibles lacking basal teeth; prescutellar impression semicircular, slightly wider than scutellum; pronotal disk with doubly punctate, with numerous secondary punctures intermingled with ground punctation, denser toward sides; median pronotal gland openings distinctly annulate, just > 1/2 behind anterior margin; marginal pronotal stria complete along sides and front; submarginal pronotal stria complete, deeply impressed, close to margin, barely curving inward at front; elytron with single complete epipleural stria; outer subhumeral stria present at base and apex, briefly interrupted at middle in most individuals; inner subhumeral stria fragmentarily present at middle, rarely nearly complete; dorsal striae 1–4 complete, the 4^th arched to the sutural, 5^th obsolete in basal fourth, sutural stria complete; all elytral striae weakly crenulate; pygidia densely doubly punctate, with fine and secondary punctures uniformly intermixed; prosternum emarginate at base, striae divergent at base, sinuate to, and meeting at, apex; prosternal lobe short, with complete marginal striae; mesoventrite produced, with complete marginal stria continued at sides by postmesocoxal stria, which ends behind outer corner of mesocoxa; mesometaventral stria angulate at middle, reaching anterior third of mesoventrite, continued at sides by lateral metaventral stria to middle of metacoxa; metaventrite with ground punctation denser toward midline (particularly in males), with secondary punctures interspersed near metacoxae; 1^st abdominal ventrite with secondary punctures along anterior margin, lateral stria incomplete along inner margin of metacoxa; protibia weakly expanded, outer margin with ~ five spinose denticles; meso- and metatibiae also weakly expanded, with rather conspicuous marginal spines; ventral setae of all tarsi flattened (those of protarsus, particularly). Male: basal piece 1/3 length of tegmen; tegmen with sides subparallel in basal 1/3, abruptly narrowed to long, downturned apical portion; medioventral process absent; median lobe short, thick.

Etymology

This species name refers to the annulate pronotal punctures (though this character is common to many species in the group).

Distribution

Most specimens of this species have been collected in northeastern Brazil and French Guiana. However, it is also known from Amazonian Ecuador and Peru, as well as Mato Grosso, Brazil.

Remarks

This species can be distinguished by the following combination of characters, pronotal disk largely doubly punctate (secondary punctures are intermingled throughout, though slightly denser toward the sides), which contrasts with the elytra, which exhibit ground punctation only, frontal stria complete, lateral submarginal pronotal stria close to margin, mesometaventral stria very strongly angulate forward, and the outer subhumeral stria interrupted at the middle, but otherwise complete.

28. Phelister sphaericus sp. nov.

http://zoobank.org/FB5D3517-934C-499A-A163-4CF100A72F16

Figs 17E, F, 18E, F, Map 11

Type material

Holotype male: “Bolivia: Santa Cruz, 4–5 km SSE Buena Vista, Hotel Flora y Fauna 17°29'S, 63°33'W [-17.4987, -63.6521] F.I.T.#4 29.iv.-6.v.2004, A.R. Cline” / “Caterino/Tishechkin Exosternini Voucher EXO-00465” (FMNH). Paratypes (53): Bolivia: Santa Cruz, Amboro National Park, Los Volcanes, c. (-18.1, -63.6), 1000 m, 11/20/04–12/12/04, Carrion trap with rotting small fish, Barclay, M.V.L. & Mendel, H., EXO-02401 (NHMUK, 1ex.); Santa Cruz, 4–5 km SSE Buena Vista, Hotel Flora y Fauna (-17.4987, -63.6521), 440 m, 12/24/03–12/31/03, FIT, S. & J. Peck (AKTC, 2ex.); Santa Cruz, 4–5 km SSE Buena Vista, Hotel Flora y Fauna (-17.4987, -63.6521), 4/25/04–5/6/04, FIT, A.R. Cline (AKTC, 3ex.); Santa Cruz, 5 km SSE Buena Vista, Flora y Fauna Hotel (-17.4987, -63.6521), 12/15/03–12/24/03, FIT, S. & J. Peck (AKTC, FMNH, MSCC, & CMNC, 40ex.); Brazil: Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau (-9.815, -58.2858), 12/15/10–12/18/10, FIT, F.Z. Vaz-de-Mello & A.F. Oliveira, EXO-02413 (CEMT, 1ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Mata Norte (-9.8192, -58.26), 12/8/10–12/14/10, FIT, F.Z. Vaz-de-Mello (CEMT, 2ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), October 2009, FIT, F.Z. Vaz-de-Mello (CEMT, 4ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), October 2009, FIT, M.S. Gigliotti (CEMT, 21ex.); Mato Grosso, Mpio. Querencia, Fazenda São Luiz (-12.597, -52.3749), February 2009, FIT, R. Andrade (CEMT, 3ex.); Mato Grosso, Sinop (-11.8167, -55.4833), 6/12/85–6/24/85, FIT (CHND, 3ex.);

Other material

Brazil: Amapá, Serra do Navio (0.9833, -52), 1/28/90–2/2/90, FIT (CHND, 8ex.); Pará, Altamira – Marabá, km 18 (-3.15, -52.05), May 1985, FIT, EXO-02402 (CHND, 1ex.); Pará, Carajás (Serra Norte) (-6.0667, -50.2), May 1985, FIT, EXO-02403 (CHND, 1ex.); Pará, Marajó-Breves (-0.8833, -50.5333), 11/18/87–12/5/87, FIT, EXO-02404 (CHND, 1ex.); Pará, Monte Alegre (-2, -54.07), 6/17/92–7/3/92, FIT, EXO-02408 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), 12/9/85–12/17/85, FIT (CHND, 5ex.); Pará, Tucuruí (-3.75, -49.667), 5/20/87–6/15/87, FIT (CHND, 2ex.); French Guiana: Belvédère de Saül, point de vue (3.6228, -53.2094), 9/2/10, 11/30/10, 12/20/10, 1/17/11, 1/31/11, 2/7/11 and 2/14/11, FIT, SEAG (AKTC & CHND, 14ex.); Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 11/3/09, FIT, SEAG, EXO-03189 (CHND, 1ex.); Roura, 39.4 km SSE (4.5453, -52.1406), 270 m, 5/29/97–6/10/97, FIT, J. Ashe & R. Brooks, SM0101424 (SEMC, 1ex.); Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 7/20/09, 9/9/10, 9/30/09, 10/8/09 and 1/25/11, FIT, SEAG (AKTC & CHND, 10ex.); Rés. Trésor (route de Kaw Pk18) (4.6105, -52.279), 225 m, 11/6/09, FIT, SEAG (CHND, 2ex.); Rés. Trésor (route de Kaw Pk18) (4.6105, -52.279), 225 m, 11/12/09, FIT, SEAG, EXO-03191 (CHND, 1ex.); Mont Tabulaire Itoupé (3.0303, -53.1067), 400 m, 3/31/10, FIT, SEAG (CHND, 2ex.); Montagne des Chevaux (4.7167, -52.4), 10/11/09, FIT, SEAG (CHND, 2ex.); Montagne des Chevaux (4.7167, -52.4), 4/14/10, FIT, SEAG (CHND, 4ex.); Montagne des Chevaux (4.7167, -52.4), 5/22/10, FIT, SEAG (CHND, 2ex.); Montagne des Chevaux (4.7167, -52.4), 12/6/09–12/26/08, 1/4/09, 1/18/09 and 2/23/09, FIT, SEAG (AKTC & CHND, 8ex.); Route de Bélizon, p. km 4.5, flight intercept, 8/1/16–8/31/16, J.-L. Guiglaris (AVSC, 1ex.). Suriname: Brokopondo, Brownsberg Nature Preserve, Witi Creek Trail (4.9486, -55.1814), 260 m, 6/23/99–6/25/99, FIT, Z. Falin, A. Gangadin, H. Hiwat, SM0165801 (SEMC, 1ex.); Brokopondo, Brownsberg Nature Preserve, Witi Creek Trail (4.9486, -55.1814), 340 m, 6/23/99–6/25/99, FIT, Z. Falin, A. Gangadin, H. Hiwat (SEMC, 4ex.); Sipaliwini, CI-RAP Survey camp 1, upper Palumeu (2.477, -55.6294), 225 m, 3/10/12–3/16/12, FIT, A.E.Z. Short, EXO-03194 (SEMC, 1ex.); Peru: Madre de Dios, CICRA Field Stn., ~ 2 km NW cafeteria res. plot. 12.55201°S, 70.10991°W, 295 m, Flight intrcept. 7–9.vi.2011, Chaboo Team (SEMC 1ex.).

Diagnostic description

Length: 1.81–2.88 mm (avg. 2.40 mm); width: 1.89–2.76 mm (avg. 2.25 mm). Body broadly rounded, slightly flattened, rufescent, with elytra faintly bicolored, sides lighter than middle, ground punctation conspicuous throughout; frons rather narrow, deeply depressed along midline; supraorbital stria present, detached at sides; frontal stria complete; epistoma raised along sides and front; labrum shallowly emarginate and subcarinate at apex; right mandible with small basal tooth; pronotum with broadly oval prescutellar impression, ~ 3 × width of scutellum; pronotal disk doubly punctate, with secondary punctures interspersed throughout, denser to sides; median pronotal gland openings distinctly annulate, ~ 2/3 behind anterior margin; lateral marginal pronotal stria complete, interrupted behind eyes, with ends of median portion recurved posterad briefly; lateral submarginal stria complete, deeply impressed, sides of pronotum weakly explanate; elytron with single complete epipleural stria; outer subhumeral stria complete, inner absent; dorsal striae 1–5 and sutural complete, 5^th obsolete in basal 1/3; all striae weakly crenulate; pygidia more or less uniformly doubly punctate; prosternum emarginate at base, striae divergent at base, convergent to apex; prosternal lobe short, with complete marginal striae; mesoventrite produced, with complete marginal stria continued at sides by postmesocoxal stria, which ends behind outer corner of mesocoxa; mesometaventral stria angulate at middle, reaching anterior third of mesoventrite, continued at sides by lateral metaventral stria to inner 1/3 of metacoxa; metaventrite with secondary punctures denser towards metacoxae; 1^st abdominal ventrite with secondary punctures along anterior margin, lateral stria incomplete along inner margin of metacoxa; protibia weakly expanded, outer margin with ~ five spinose denticles; meso- and metatibiae slender, with fine marginal spines; ventral setae of all tarsi flattened (those of protarsus, particularly). Male: basal piece 1/4 length of tegmen; tegmen with sides subparallel in basal 1/2, abruptly narrowed to ventrally hooked apices; medioventral process absent; median lobe ~ 1/2 tegmen length.

Etymology

This species name, sphaericus, refers to its very convex body form.

Distribution

This species has an unusual distribution, with the highest concentration of records coming from northeastern Brazil, Suriname, and French Guiana, but with a number also from central Brazil and Bolivia to the southwest.

Remarks

This species is quite broadly rounded, which alone is distinctive. It is also characterized by its slightly explanate pronotum bearing an elevated marginal bead, doubly punctate pronotal disk, complete outer subhumeral stria, and complete 4^th and sutural striae united by a basal arch.

29. Phelister geijskesi Kanaar, 1997

Figs 17G, H, 18G, H, Map 12

Phelister geijskesi Kanaar, 1997: 280

Type material

Holotype male (not studied): “Suriname, Lelydorp, /16-XII-1938, in detritus room of Atta sexdens nest. Leg. D. C. Geijskes”; several paratypes with same data as type examined by the authors.

Other material

Brazil: Amapá, Serra do Navio (0.9833, -52), 1/28/90–2/2/90, FIT, EXO-03034 (CHND, 1ex.); Amapá, Serra do Navio (0.9833, -52), 5/1/91–5/14/91, FIT (CHND, 3ex.); Espírito Santo, Mun. Linhares, Faz. Lagoa do Macuco (-19.0639, -39.9786), 10 m, 1/27/00, FIT, primary lowland Atlantic forest, sandy soil, Génier & S. Ide, SM0809822 (SEMC, 1ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1984, FIT (CHND, 2ex.); Pará, Tucuruí (-3.75, -49.667), 2/16/89–3/2/89, EXO-03033 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), February 1986, FIT, EXO-03032 (CHND, 1ex.); Guyana: Kurupukari (4.6667, -58.6667), September-November 1992, Malaise/FIT, EXO-03035 (NHMUK, 1ex.); Suriname: Marowijne Perica, 70 km E Paramaribo on East-West Road (5.6744, -54.6086), 5 m, 5/31/99–6/5/99, FIT, Z. Falin, B. DeDijn, SM0182745 (SEMC, 1ex.); Sipaliwini, CI-RAP Survey camp 1, upper Palumeu (2.477, -55.6294), 225 m, 3/10/10–3/16/12, FIT, A.E.Z. Short (AKTC, 2ex.); Trinidad: 11 km SE Arima Arena For. Res. Rainforest (10.5, -61.3), 6/22/93–7/8/93, S. & J. Peck, EXO-03036 (AKTC, 1ex.)

Map 12.

Collecting records for Phelister geijskesi (circles), P. fraternus (squares), P. conjunctus (star), P. striatinotum (inverted triangles), and P. chabooae (upright triangle).

Diagnostic description

Length: 1.73–2.01 mm (avg. 1.82 mm); width: 1.50–1.62 mm (avg. 1.54 mm). Body elongate oval, widest behind middle, rufescent, with moderately conspicuous ground punctation; frons convex, not depressed at middle; frontal stria present at sides, continuous with complete supraorbital, broadly interrupted at front; epistoma convex, not depressed; labrum distinctly emarginate; both mandibles with small basal tooth; pronotum with wide, short prescutellar impression, punctate within; pronotal disk with ground punctation only, lacking secondary lateral punctures; marginal pronotal stria complete along sides and front, submarginal stria absent; median pronotal gland openings annulate, ~ 2/3 back from anterior margin; elytron with single, complete epipleural stria; outer subhumeral stria complete, inner absent; dorsal striae 1–4 complete, 4^th arched to suture; 5^th slightly abbreviated at base, sutural stria obsolete in basal 1/3; all dorsal stria finely, weakly carinate; prosternal keel deeply emarginate, keel striae separate at base, sinuate, connected at apex; prosternal lobe long, subtruncate, with complete marginal stria; mesoventrite produced, with complete marginal stria continued at side by postmesocoxal stria which terminates before reaching mesepimeron; mesometaventral stria angulate at middle, reaching midpoint of mesoventrite, continued at sides by lateral metaventral stria to near middle of metacoxa; metaventrite depressed at middle in males; 1^st abdominal ventrite punctate at middle, lacking lateral striae; protibia laterally rounded, with small teeth but very long lateral spines; male protarsus with expanded ventral setae; meso- and metatibiae rather narrow, with elongate but rather fine marginal spines, tarsi elongate. Male: basal piece 1/3 length of tegmen; tegmen with sides subparallel in basal 1/2, abruptly narrowed to ventrally hooked apices; medioventral process absent; median lobe ~ 1/3 tegmen length.

Distribution

Though described only from Suriname, this species in fact has a wide distribution along the east coast of northern South America, even extending to the island of Trinidad.

Remarks

This species stands out among those treated here in having the frons simply convex, not at all impressed medially. It is also distinctive in having the scutellar impression broadly oval, and punctate within, and in having the elytral striae weakly carinate (the outer edge of the stria is elevated, while the inner edge is flat). In some respects (including its Atta association) the species resembles Pseudister rufulus (Lewis) (and a few others we consider related to it, such as Phelister rubens Marseul), which shares a convex frons, deeply emarginate labrum, and spinose tibiae. However, analyses to date don’t support these as closely related. Instead P. geijskesi exhibits numerous features that ally it to the species above, including distinctly annulate pronotal gland openings ~ 2/3 removed from the anterior margin (those of Pseudister are non-annulate and close to the margin), depressed male mesoventrite, and anterior narrowing of the prosternal keel, in addition to genitalic features.

30. Phelister fraternus sp. nov.

http://zoobank.org/57B6ECF4-84A4-43F4-BF43-7131FD42C58B

Figs 19A, B, 20A, B, Map 12

Type material

Holotype male: “Guyane Française: Matoury, Chemin du Lac des Américains, La Désirée 4°50.8'N, 52°19.8'W [4.8467, -52.33] 8.x.2011. SEAG leg.” / “Caterino/Tishechkin Exosternini Voucher EXO-01767 (MNHN).

Figure 19.

A, B Phelister fraternus: A dorsal habitus B ventral habitus C, D P. conjunctus: C dorsal habitus D ventral habitus E, F P. chabooae: E dorsal habitus F ventral habitus G, H P. striatinotum: G dorsal habitus H ventral habitus.

Other material

Bolivia: Santa Cruz, 5 km SSE Buena Vista, Flora y Fauna Hotel (-17.4987, -63.6521), 440 m, 12/15/02–12/24/03, FIT, S. & J. Peck, EXO-00375 (CMNC, 1ex.); Brazil: Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), October 2009, FIT, M.S. Gigliotti, EXO-03030 (CEMT, 1ex.).

Diagnostic description

Length: 3.15–3.43 mm (avg. 3.32 mm); width: 2.76–3.11 mm (avg. 2.98 mm). Body large, rounded, strongly convex, castaneous; most surfaces conspicuously punctate, with small ground punctation and significantly larger punctures rather sparsely intermingled; head with frons depressed along midline, weakly produced above antennal bases; supraorbital stria present, disconnected from frontal stria at sides; frontal stria complete, continued finely above epistoma; epistoma laterally weakly carinate, weakly constricted at base, elevated along anterior margin; labrum short, apex weakly emarginate; left mandible with weak basal tooth; pronotum broad, with punctures larger and denser toward prescutellar area; prescutellar impression absent; median pronotal gland openings annulate, located ~ 2/3 from anterior margin; lateral submarginal stria complete, strongly impressed; lateral marginal stria complete and continuous with anterior marginal; elytron with one complete epipleural stria; outer subhumeral striae complete, inner subhumeral slightly abbreviated from base; all other dorsal striae complete, 1^st-3^rd subcarinate, 5^th arched to sutural stria; propygidium large, midline length equal to that of pygidium; prosternal keel emarginate at base, with primary striae anteriorly connected, posteriorly divergent; secondary striae present along basal 1/2 of keel; prosternal lobe rounded, marginal stria absent; mesoventrite with strong median projection; marginal mesoventral stria complete, postmesocoxal stria short, ending behind coxa; mesometaventral stria weakly angulate at middle, reaching anterior third of mesoventrite, continued by lateral metaventral stria to inner 1/3 of metacoxa; metaventrite and anterior 1/2 of 1^st abdominal ventrite conspicuously punctate; 1^st abdominal ventrite with single, incomplete lateral stria along inner edge of metacoxa; protibiae weakly expanded, with inner edge weakly rounded, outer edge weakly 5-dentate, each tooth with small spine; meso- and metatibiae not distinctly expanded, tarsi not compressed. Male: basal piece 1/4 length of tegmen; tegmen with sides subparallel in basal 2/3, abruptly narrowed to ventrally curved apices; medioventral process absent; median lobe ~ 1/4 tegmen length.

Etymology

We name this species fraternus as a reference to the ‘brotherhood’ of three similar but non-identical specimens we have available of the species.

Distribution

The entirety of material available for this species is three specimens from three disparate locations (the type locality in French Guiana, plus Santa Cruz, Bolivia and Mato Grosso, Brazil).

Remarks

In having the posterior 1/2 of the pronotum increasingly densely punctate, this species resembles species of Crenulister. This shared character may be informative, although they do not resolve together in preliminary phylogenies. This is true of the following two species newly described here, as well, having some characters of Crenulister, but resolving apart from it in results of analyses to date.

There is some variation among the specimens studied. The Brazilian example has a more nearly complete inner subhumeral stria, while the one from Bolivia has only a few basal fragments. The Brazilian specimen’s pronotum is also faintly explanate.

Figure 20.

Male genitalia A, B Phelister fraternus: A aedeagus, dorsal B aedeagus, lateral C, D P. conjunctus: C aedeagus, dorsal D aedeagus, lateral E, F P. striatinotum: E aedeagus, dorsal F aedeagus, lateral.

31. Phelister conjunctus sp. nov.

http://zoobank.org/3286F567-1258-4D7A-B1A7-AE4E7E54B279

Figs 19C, D, 20C, D, Map 12

Type material

Holotype male: “Guyane Française: Mont Tabulaire Itoupé 3°1.82'N, 53°6.40'W [3.0303, -53.1067], 400 m, Piège d’interception No. 3. 31 Mar 2010. SEAG leg.” / “, Caterino/Tishechkin Exosternini Voucher EXO-00378” (MNHN); Paratypes (2): French Guiana: Belvédère de Saül, point de vue (3.6228, -53.2094), 17.1.2011, FIT, SEAG, EXO-03029 (CHND, 1ex.); Rés. Natur. des Nouragues, Saut Pararé. 4°02'N, 52°41'W. Piège vitre, 20.iv.2010. SEAG leg. (CHND, 1ex.).

Diagnostic description

Length: 4.02–4.65 mm (avg. 4.32 mm); width: 3.90–4.10 mm (avg. 4.03 mm). Body very large, elongate oval, strongly convex, piceous; ground punctation conspicuous, most surfaces with conspicuous but sparse secondary punctures; head with frons weakly depressed along midline, weakly produced above antennal bases; supraorbital stria present, disconnected from frontal stria at sides; frontal stria interrupted at middle; epistoma weakly elevated at sides; labrum with apex emarginate; left mandible with moderate basal tooth; pronotum broad, with secondary punctures more numerous in posterior 1/2; prescutellar area weakly depressed; main median pronotal gland openings weakly annulate, with one pair at anterior margin, also apparently multiplied along a short track reaching 2/3 from anterior margin; lateral submarginal stria complete, strongly impressed; lateral marginal stria complete and continuous with anterior marginal; anterior margin weakly produced behind head; elytron with one complete epipleural stria; outer subhumeral, inner subhumeral and all dorsal striae complete, 4^th arched toward base of 5^th, but free, 5^th arched to sutural stria, all striae connected by apical arches along elytral apex; propygidium midline length nearly equal to that of pygidium; prosternal keel emarginate at base, with primary striae narrowly connected in front, posteriorly divergent but connected along basal margin; weak secondary striae present along basal 1/2 of keel; prosternal lobe short, emarginate apically, marginal stria absent; mesoventrite with strong median projection; marginal mesoventral stria complete, slightly disconnected from postmesocoxal stria, which extends just beyond mesocoxa; mesometaventral stria broadly angulate at middle, reaching anterior third of mesoventrite, continued by lateral metaventral stria toward, but not reaching, middle of metacoxa; metaventrite with cluster of secondary punctures near metacoxa; 1^st abdominal ventrite conspicuously punctate in anterior 1/2, with incomplete lateral stria along inner edge of metacoxa; protibia weakly expanded, outer edge weakly dentate, each tooth with small spine; meso- and metatibiae not distinctly expanded, tarsi not compressed. Male: basal piece 1/3 length of tegmen; tegmen with sides subparallel in basal 1/2, abruptly narrowed, then weakly expanded to ventrally hooked apices; medioventral process absent; median lobe ~ 1/4 tegmen length.

Etymology

This species name refers to the apically ‘conjunct’ or united elytral striae.

Distribution

This species is only known three close locations in French Guiana.

Remarks

This species appears very closely related to P. fraternus (above), and as discussed under that species, has much in common with species we have assigned to Crenulister. It lacks the large, spatulate protarsal setae of Crenulister, and has quite dissimilar genitalia. Otherwise, compared to those and to P. fraternus, it has finer and sparser pronotal punctation, and has its pronotal gland openings apparently multiplied, with two or three openings in a longitudinal series, with larger irregular surrounding annuli. All its elytral striae are complete and most are also connected along the elytral apex.

32. Phelister chabooae sp. nov.

http://zoobank.org/4EC6955C-C49F-41AA-885C-14A4608E2B1F

Fig. 19E, F, Map 12

Type material

Holotype female: “Peru: Madre de Dios, CICRA Field Stn., ~ 2 km NW cafeteria res. plot. 12.55236°S, 70.10989°W, 295 m, Flight intrcept. 11–13.vi.2010, Chaboo Team PER-11-FIT-019” / “Caterino/Tishechkin Exosternini Voucher EXO-03628” (SEMC).

Diagnostic description

Length: 2.56 mm; width: 2.13 mm. Body elongate oval, slightly flattened, rufescent; ground punctation fine, with very few, larger secondary punctures; head with supraorbital stria weakly connected to frontal stria at sides; frontal stria complete, slightly recurved at middle; epistoma with sides and apical margin subcarinate; labrum with apex emarginate; left mandible lacking basal tooth, right mandible with very small basal tooth; pronotum broad, with secondary punctures more numerous toward prescutellar area, prescutellar impression small, poorly defined; median pronotal gland openings small, non-annulate, approximately 1/3 from anterior margin; lateral submarginal stria complete, strongly impressed; anterior margin weakly produced behind head; elytron with single, complete epipleural stria; outer subhumeral stria complete, crenulate; inner subhumeral stria absent; dorsal striae 1–5 and sutural stria complete, the 4^th arched to base of sutural stria, all striae appearing as series of connected punctures, the punctures alternating sides of the connecting line; propygidium with sparse secondary punctures mostly in basal 1/2; pygidium narrowed to apex, bluntly acute, lacking secondary punctures; prosternal keel deeply emarginate at base, somewhat broad, striae subparallel, connected in front, posteriorly divergent; prosternal lobe deflexed, rounded, with complete marginal stria; mesoventrite with strong median projection; marginal mesoventral stria complete, continued by postmesocoxal stria to mesepimeron; mesometaventral stria angulate at middle, reaching anterior third of mesoventrite, continued by lateral metaventral stria to middle of metacoxa; metaventrite and anterior 1/2 of abdominal ventrite one with dense secondary punctures; abdominal ventrite one with incomplete lateral stria along inner edge of metacoxa; protibia weakly expanded, with outer edge rounded and strongly dentate, with ~ 8 marginal spines; protarsal ventral setae expanded, leaf-like; meso- and metatibiae not distinctly expanded, with numerous long marginal spines; meso- and metatarsi slender, with long ventral spines.

Etymology

We name this species for Dr. Caroline Chaboo, in recognition of her exceptional work on documenting the beetle fauna of Peru.

Distribution

This species is only known from the type locality in Madre de Dios, Peru.

Remarks

This species may represent a connection between this group of Phelister and the recently described genus Crenulister (Caterino and Tishechkin 2014). We have debated whether it belongs there, lacking a few characters of that genus (and lacking confirmation from male genitalia). It shares some characters, including the broadly rounded and moderately flattened body form, the strongly spinose tibiae, the more conspicuous secondary punctures along the posterior portion of the pronotal disk, the broadly crenulate elytral striae, and the spatulate tarsal setae (not restricted to males). However, it differs from most of them in lacking a pygidial stria, lacking an inner subhumeral elytral stria, and having the middle of the anterior pronotal margin rather distinctly produced over the head. For now, we describe this distinct species in Phelister, and recognize that the relationships between these genera requires further examination.

33. Phelister striatinotum Wenzel & Dybas, 1941

Figs 19G, H, 20E, F, Map 12

Phelister striatinotum Wenzel & Dybas, 1941: 463.

Phelister striatinotus; Mazur, 2011: 29.

Type material

Holotype , of undetermined sex: “Villavicencio, VII:24:38 Colombia” / “col. by H.Dybas” / “Collection R. L. Wenzel” / “Type Phelister striatinotum Wenzel + Dybas” / “Phelister striatinotum Wenzel & Dybas” (FMNH).

Other material

Argentina: Corrientes, Rio Riachuelo, Peunte Pexoa at 27.560°S, 58.723°W, 50 m, 12/20/12–12/25/12, K.P. Tomkovich (AVSC, 1ex.); Bolivia: Cochabamba, Est. Biol. Valle Sajta, 67.5 km E Villa Tunari (-17.1053, -64.7825), 300 m, 2/9/99–2/13/99, FIT, lowland rain forest, F. Génier, EXO-03490 (CMNC, 1ex.); Cochabamba, 117 km E Cochabamba, at Lagunitas (-17.1061, -65.6825), 1000 m, 2/8/99–2/12/99, FIT, mountain evergreen forest, F. Génier, EXO-03491 (CMNC, 1ex.); Santa Cruz, Amboro National Park, Los Volcanes, c. (-18.1, -63.6), 1000 m, 11/20/04–12/12/04, FIT, Mendel, H. & Barclay, M.V.L., EXO-03492 (NHMUK, 1ex.); Santa Cruz, ~ 5 km SSE Buena Vista, Flora y Fauna Hotel, 17.498°S, 63.652°W, 440 m, flight intercept trap, 14–31.xii.2003, S. & J. Peck (AKTC, 2ex.); Brazil: Acre, Cruzeiro do Sul (-7.6333, -72.6), January-February 1988, FIT, EXO-03496 (CHND, 1ex.); Mato Grosso, Mpio. Cuiaba, Fazenda Mutuca (-15.3145, -55.9703), 9/23/08, FIT, F.H. Gava & J.R. Rocha, EXO-03497 (CEMT, 1ex.); Costa Rica: Guanacaste, Est. Pitilla, P.N. Guanacaste, 9 km S Sta. Cecilia (10.99, -85.4), 700 m, January 1994, C. Moraga (INBIO, 2ex.); Heredia, Est. Biol. La Selva, 3 km S Pto. Viejo (10.4333, -84.0167), 7/27/76, H.A. Hespenheide, EXO-03495 (INBIO, 1ex.); Heredia, Est. Biol. La Selva, 3 km S Pto. Viejo (10.4333, -84.0167), 6/20/91, Riding Atta cut leaf, H.A. Hespenheide, EXO-03494 (INBIO, 1ex.); Limon, Amubri, A.C. Amistad (9.5, -82.9), 70 m, 5/2/94–5/31/94, G. Gallardo, INBIO CRI001 872229 (INBIO, 1ex.); Ecuador: Napo, Tena (-1, -78), 2000ft, 2/14/23–2/28/23, FX William, EXO-03493 (USNM, 1ex.); Orellana, Est. Biodiv. Tiputini (-0.6376, -76.1499), 7/30/08, FIT, A. Tishechkin, EXO-00702 (AKTC, 1ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 7/4/99–7/17/99, FIT, C. Carlton & A. Tishechkin, LSAM 0045446 (LSAM, 1ex.); French Guiana: Régina, Rés. Natur. des Nouragues (4.0378, -52.6725), 2/19/10, FIT, SEAG, EXO-00807 (CHND, 1ex.); Roura (8.4 km SSE) (4.6781, -52.2236), 200 m, 5/29/97–6/10/97, FIT, J. Ashe & R. Brooks, EXO-03488 (CMNC, 1ex.); Mont Tabulaire Itoupé (3.022, -53.0842), 800 m, 3/30/10, FIT, SEAG, EXO-03487 (CHND, 1ex.); Guyana: Mazaruni-Potaro, Takutu Mountains (6.25, -58.9167), 12/8/83, FIT, in montane rainforest near logging area, P.D. Perkins & W.E. Steiner, EXO-00366 (USNM, 1ex.); Kurupukari (4.6667, -58.6667), September-November 1992, Malaise/FIT, EXO-03489 (NHMUK, 1ex.); Paraguay: Cazaapa, San Rafael Reserve, Hermosa, prop. Lopez family (-26.3081, -55.7508), 80 m, 12/1/00–12/3/00, FIT, Z. Falin, EXO-00447 (SEMC, 1ex.); Cazaapa, San Rafael Reserve, Hermosa, prop. Lopez family, bank Rio Tebicuary (-26.2897, -55.7186), 80 m, 12/1/00–12/4/00, FIT, Z. Falin, SM0275458 (SEMC, 1ex.); Peru: Loreto, Compamento San Jacinto (-2.3125, -75.8628), 175–215 m, 7/3/93–7/12/93, FIT, R. Leschen, EXO-03499 (CHSM, 1ex.); Loreto, Iquitos (-3.74, -73.27), 90 m, 5/7/92, FIT, J. Danoff-Berg, EXO-03498 (SEMC, 1ex.); Madre de Dios, Rio Alto Madre de Dios, Pantiacolla Lodge (-12.655, -71.2317), 11/14/07–11/19/07, FIT, D. Brzoska, EXO-03500 (SEMC, 1ex.).

Diagnostic description

Length: 1.97–2.60 mm (avg. 2.34 mm); width: 1.65–2.21 mm (avg. 1.97 mm). Body elongate, widest at humeri, slightly flattened, rufescent, with moderately dense and conspicuous ground punctation; frons broad, only weakly depressed at middle; supraorbital stria absent; frontal stria complete, weakly recurved at middle; labrum weakly emarginate at apex; left mandible with broad basal tooth, right mandible with narrower blunt tooth; prescutellar impression very wide, with anterior edge sinuate, ~ 6 × as wide as the scutellum; pronotal disk with slightly larger secondary punctures interspersed at sides; median pronotal gland openings annulate, ~ 1/3 behind anterior margin; marginal pronotal stria complete along sides and front; submarginal stria absent; elytron with single, complete epipleural stria; outer subhumeral stria complete, inner absent; dorsal striae 1–4 and sutural complete, 4^th arched to sutural stria, 5^th obsolete in basal 1/3; propygidium with sparse, small secondary punctures, pygidium largely lacking secondary punctures; prosternum emarginate at base, striae convergent to apex; prosternal lobe rather long, subtruncate, with deep, complete marginal striae; mesoventrite strongly produced, with complete marginal stria continued at sides by postmesocoxal stria, which ends freely at middle of lateral portion of metaventrite; mesometaventral stria angulate at middle, reaching middle of mesoventrite, continued at sides by lateral metaventral stria to inner 1/3 of metacoxa; 1^st abdominal ventrite with one complete and one incomplete lateral striae; protibia rather strongly dentate, with ~ five marginal spines; spines of meso- and metatibiae fine and long, but largely confined to distal 1/2; ventral setae of tarsi simple, not flattened. Male: basal piece 1/3 length of tegmen; tegmen with sides subparallel in basal 2/3, abruptly narrowed to ventrally hooked apices; medioventral process absent; median lobe ~ 1/3 tegmen length.

Distribution

This species is very widely distributed, from Costa Rica in the north to Argentina in the south, with most other records coming from western Amazonia. The species is also known from the Guianas.

Remarks

This is a widespread and rather variable species. The very wide prescutellar impression, with its anterior margin distinctly sinuate, is its most consistent diagnostic feature. This, along with pronotal gland openings that are near the anterior third of the pronotal disk, will identify it unambiguously. Compared to other species treated in this paper, its frons is relatively weakly depressed, and the tooth on the base of the left mandible is quite strong. Its relationships to species immediately above are not very strongly supported, since this species has a completely divided male 10^th tergite (it is partly or completely fused in all the preceding species of the amazoniae subgroup).

Nearly all specimens have been collected using flight interception traps. However, one specimen from La Selva, Costa Rica was ‘Riding [an] Atta Cut Leaf’, suggesting that leafcutter ant nests would be worth exploring for this species.

34. Phelister notandus Schmidt, 1893

Fig. 21A, B

Phelister notandus Schmidt, 1893b: 82.

Type material

Lectotype , of undetermined sex, hereby designated: “Brasil” / “coll. J.Schmidt” / “notandus Schm.” / “Type” / “Lectotype Phelister notandus Schmidt, 1893, M.S.Caterino & A.K.Tishechkin des. 2010 (ZMHB).

Figure 21.

A, B Phelister notandus: A dorsal habitus B ventral habitus C, D Phelister amazoniae: C dorsal habitus D ventral habitus E–H P. arcuatus: E dorsal habitus F ventral habitus G mesothoracic leg H posterior view showing carinate elytral striae.

Diagnostic description

Length: “3 mm” (Schmidt 1893b). Body rounded, slightly elongate, widest behind humeri, rufescent, with rather dense and conspicuous ground punctation; frons broad, depressed at middle; supraorbital stria absent; frontal stria strongly recurved at middle briefly interrupted; labrum shallowly emarginate at apex; prescutellar impression weakly impressed, narrower than scutellum; pronotal disk with few lateral secondary punctures; median pronotal gland openings annulate, ~ 4/5 behind anterior margin; marginal pronotal stria complete along sides and front; submarginal stria absent; elytral striae very reduced, crowded to side; outer subhumeral stria interrupted but present at base and apex; inner subhumeral present in apical 2/3; striae one and two complete; stria three present at base only; 4^th, 5^th and sutural striae absent except for basal arch; propygidium large, as long along midline as pygidium, with dense ground punctation and only slightly larger secondary punctures interspersed; pygidium largely lacking secondary punctures; prosternal keel emarginate at base, striae convergent to apex; prosternal lobe short, with fine marginal striae; mesoventrite produced, with complete marginal stria continued at sides by postmesocoxal stria, which ends freely at middle of lateral portion of metaventrite; mesometaventral stria sinuate at middle, reaching nearly to mesoventral stria, continued at sides by lateral metaventral stria toward metepipleuron; abdominal ventrites obscured by point; all tibiae slightly broadened; protibia strongly dentate, with ~ five marginal spines; spines of meso- and metatibiae weak, most confined to distal 1/2.

Distribution

This species is only known from the type, with only the unfortunately vague location “Brasil”.

Remarks

Despite not being able to examine male genitalia for this species, its placement in this subgroup seems secure. It is a rather autapomorphic species, yet showing moderate development of some characters that are more extremely expressed in some of the following species, including dense punctation and expanded tibiae. It is hoped that additional material of this species is discovered to allow us to more comprehensively evaluate its relationships, and to pinpoint its geographic range.

35. Phelister amazoniae (Lewis, 1898), comb. nov.

Figs 21C, D, 22A–F, Map 13

Discoscelis amazoniae Lewis, 1898: 176.

Reninus amazoniae; Mazur, 1984: 312; 2011: 129.

Brachylister amazoniae; Bickhardt, 1917: 234.

Type material

Lectotype , sex uncertain, hereby designated: “Santarem” / “H.H. Smith 1898” / “Discoscelis amazoniae Type. Lewis” / “G.Lewis Coll. B.M.1926-369.” / “Type” (NHMUK).

Figure 22.

Male genitalia A–F Phelister amazoniae: A tergite 8 B sternite 8 C tergites 9 & 10 D sternite 9 E aedeagus, dorsal F aedeagus, lateral G, H P. arcuatus (outlines only, to contrast with E and F): G aedeagus, dorsal H tegmen, lateral.

Other material

Brazil: Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Mata Norte (-9.8192, -58.26), 12/8/10–12/14/10, FIT, F.Z. Vaz-de-Mello (CEMT, 28ex.); Mato Grosso, Mpio. Cotriguaçu, Fazenda São Nicolau, Matinha (-9.8383, -58.2508), October, 2009, FIT, M.S. Gigliotti (CEMT, 5ex.); Peru: Cusco, La Convencion, Echarate, CN Timpia (-12.0621, -72.8516) (MUSM, 1ex.); Madre de Dios, Rio Los Amigos, CICRA (-12.5709, -70.1018), 25–150 m, 11/24/06–11/26/06, FIT, A. Asenjo (MUSM Lima, 3ex.); Madre de Dios, Rio Los Amigos, CICRA (-12.5521, -70.1096), 6/9/11–6/11/11, FIT, C. Chaboo (SEMC, 2ex.); Madre de Dios, Rio Los Amigos, CICRA (-12.5526, -70.1101), 6/9/11–6/11/11, FIT, C. Chaboo (SEMC, 2ex.); Madre de Dios, Rio Los Amigos, CICRA (-12.5524, -70.1099), 6/11/11–6/13/11, FIT, C. Chaboo (SEMC, 2ex.); Madre de Dios, Los Amigos Field Station, 12.5624°S, 70.0930°W, 288 m, terra firme forest, pitfall trap, 2–11.i.2007, J. Jacobs (CASC, 5ex.).

Map 13.

Collecting records for Phelister amazoniae (white circles), P. arcuatus (black squares), and P. praecisus (stars).

Diagnostic description

Length: 2.72–3.11 mm (avg. 2.95 mm); width: 2.40–2.64 mm (avg. 2.56 mm). Body large, elongate, with sides subparallel, strongly convex, dark rufescent to castaneous; most surfaces densely punctate; head with frons depressed along midline, strongly produced above antennal bases, densely punctate, punctures interconnected by fine reticulations; supraorbital stria present, but disconnected from frontal at sides; frontal stria complete along sides, weakly continued above epistoma, may be finely interrupted at middle, also continued anterad by lateral marginal epistomal striae; epistoma constricted at base, swollen along anterior margin, labrum short, apically emarginate; mandibles with incisor edges rather short, without marginal teeth; pronotum broad, densely punctate, most punctures uniform in size, disk explanate along sides; prescutellar impression smaller than scutellum, weakly defined; median pronotal gland openings distinctly annulate, located ~ 2/3 from anterior margin; lateral submarginal stria complete, deeply impressed; lateral marginal stria complete and continuous with anterior marginal; elytral subhumeral striae and all dorsal striae complete, outer striae deeply impressed and carinate, 4^th stria arched to sutural stria; punctures of elytral disk distinctly interconnected by fine reticulations; propygidium large, midline length equal to that of pygidium, with two sizes of punctures (small and smaller) intermingled, intervening surface finely microsculptured; pygidium with deep, complete marginal stria, punctation finer and denser than that of pygidium; prosternal keel deeply emarginate at base, narrowed, with median striae complete, subparallel, connected anteriorly; prosternal lobe short, rounded, with complete marginal stria; mesoventrite rather narrow, with strong median projection; marginal mesoventral stria may be weakly interrupted at middle, continued by postmesocoxal stria to outer 1/4 of metaventrite; mesometaventral stria angulate at middle to midpoint of mesoventrite, continued by lateral metaventral stria to middle of metacoxa, then by recurrent stria anterad to middle of metepisternum; 1^st abdominal ventrite with broadly depressed, complete lateral stria along inner edge of metacoxa; all femora and tibiae broadly expanded; protibia with rounded inner and outer edges, with four or five marginal spines, spurs present, small; meso- and metafemora with posterior margin strongly produced; meso- and metatibiae broad and flat, with weak marginal spines; tarsi stout, compressed, together little longer than the tibiae are broad. Male: basal piece just > 1/3 length of tegmen; tegmen with sides subparallel to slightly widened in basal 1/2, abruptly narrowed to ventrally hooked apices; medioventral process absent; median lobe simple, ~ 1/3 tegmen length.

Remarks

Although this species was described from Pará state, Brazil, all recent material we have seen is from much further south and west, from Mato Grosso to Amazonian Peru. Nonetheless, the distinctive characters are clearly shared with the type specimen.

This species is very similar and closely related to the following one, but the presence of a pygidial stria in the present species will consistently distinguish them. In most specimens of P. amazoniae, the pronotal punctation is simple, comprising consistent-sized punctures, and the elytral punctures are joined by a very fine network of reticulations. Specimens of P. amazoniae from Peru (Madre de Dios, La Convencion) tend to have a doubly punctate pronotum, like P. arcuatus, as well as non-reticulate elytral punctation, but based largely on their possessing a marginal pygidial stria we retain these here. These two species are also very similar to another new species (P. dilatatus, #23 above), which also shares the large convex, generally punctate body, as well as broadly expanded tibiae. However, remarkably, this appears to be convergence, as the male genitalia are quite different. Phelister dilatatus is also easily distinguished by the non-explanate pronotum and distinctly toothed (not externally rounded) protibia.

This species has previously been assigned to a genus of Haeteriinae. However, it clearly lacks critical characters of that subfamily (fused labrum, pyramidal antennal scape, sclerotized sides of antennal club, lack of tibial spurs), and is only superficially similar to members of Reninus Lewis. Among other characters, its male genitalia clearly ally it to this subgroup of the Phelister blairi group.

Distribution

Known from Pará and Mato Grosso states in Brazil, and Madre de Dios and La Convencion, Peru.

36. Phelister arcuatus sp. nov.

http://zoobank.org/2A497928-F64A-4C5D-8F05-5C086B778DF4

Figs 21E–H, 22G, H, Map 13

Type material

Holotype male: “Cuyaba [-15.6, -56.1] M. Grossa Brazil” / “CNHM Colln. (ex. Colln. C. A. Ballou)” / “Brachylister” (Discoscelis) amazoniae Lewis” / “Caterino/Tishechkin Exosternini Voucher EXO-03000” (FMNH); Paratypes (19): Brazil: Mato Grosso, Mpio. Claudia (-11.2416, -55.325), 10/17/10–10/27/10, FIT, A.F. Oliveira, EXO-02999 (CEMT, 1ex.); Mato Grosso, Mpio. Querencia, Fazenda São Luiz (-12.597, -52.3749), July 2008, FIT, R. Andrade, (CEMT, 2ex.); Mato Grosso, Mpio. Querencia, Fazenda São Luiz (-12.597, -52.3749), February 2009, FIT, R. Andrade (CEMT, 11ex.); Mato Grosso, Mpio. Tangara da Serra (-14.3175, -57.7317), 640 m, 1/22/09–1/29/09, FIT, R.S. Silva, EXO-02996 (CEMT, 1ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), December 1984, FIT (CHND, 2ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), October, 1986, FIT, N. Degallier, EXO-00004 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), 12/5/87–12/17/87, FIT, EXO-00825 (CHND, 1ex.).

Diagnostic description

Length: 2.36–2.99 mm (avg. 2.77 mm); width: 2.01–2.80 mm (avg. 2.55 mm). This species is very similar and closely related to the preceding, and is only described here to the extent that they differ. Body smaller; pronotal discal punctures distinctly ‘doubled’ (two sizes of punctures intermingled); elytral striae slightly crowded laterad, with the 4^th stria distinctly outwardly arcuate; inner subhumeral and 1^st through 4^th dorsal striae more distinctly carinate; pygidium lacking marginal stria. Male genitalic morphology generally very similar to the preceding species, but aedeagus narrower and slightly flatter than that of P. amazoniae, with the basal wide portion accounting for more of the overall tegmen length, basal piece shorter.

Etymology

This species’ name refers to the strongly outwardly bowed 4^th (and other) elytral striae.

Distribution

This species is known from Pará and Mato Grosso states, Brazil.

Remarks

This species is broadly sympatric with the preceding, but the differences are consistent across this range, particularly the lack in the present species of a marginal pygidial stria. Both species are known from males and females, precluding the possibility that their differences represent sexual dimorphism.

P. gregarius subgroup

This subgroup comprises six species, united by a number of characters. Of them, the divided medioventral process of the aedeagus seems to be a strong synapomorphy.

Genitalic characters:

Medioventral process of tegmen present but divided
Accessory sclerites of segment 8 minute or absent
T8 elongate, with broad ventrolateral apodemes that often meet beneath
S8 apex broad, flat, lacking setae
Ventrolateral hooks of T9 small and very near apex
S9 with rather broad bowl-shaped head, minimal apical emargination
T10 divided
Apico-ventral margin of basal piece lacking projection (indeed, usually emarginate)

External characters:

Protibia with dominant apical spine located basad strong apical emargination
Male metaventrite may be depressed
Elytra conspicuously punctate
Pronotum somewhat elongate

37. Phelister gregarius sp. nov.

http://zoobank.org/DCEC4A58-2D81-4BB8-9231-34EA5321A935

Figs 23A, B, 24A–F, Map 14

Type material

Holotype male: “Peru: Dept. Loreto, Iquitos – Nauta rd., km 58, Rio Itaya at 4°15.738'S, 73°28.052'W [-4.2563, -73.4675]. 120m” / “Window trap next to entrance into Eciton burchelli statary bivouac in a hollow tree 5–9 May 2009. A.V.Petrov” / “Caterino/Tishechkin Exosternini Voucher EXO-00466 (FMNH). Paratypes (46): Peru: same data as type (22ex.); Loreto, Iquitos (-3.74, -73.27), 90 m, 5/5/92, FIT, J. Danoff-Berg, EXO-03341 (SEMC, 1ex.); Loreto, km 63, rd. Iquitos – Nauta, Rio Itaya (-4.2534, -73.4346), 140 m, 2/10/10–2/14/10, A.V. Petrov, EXO-03340 (AKTC, 1ex.); Ecuador: Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 6/28/99–7/5/99, FIT, C. Carlton & A. Tishechkin, LSAM 0045453 (LSAM, 1ex.); Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/11/08–7/26/08, FIT, A. Tishechkin (AKTC & LSAM, 5ex.); Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/18/99, Berlese of litter and refuse deposit at Eciton burchelli bivouac site just after emigration, A. Tishechkin, EXO-00730 (AKTC, 1ex.); Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/13/08, Sifting litter at recently abandoned bivouac site of Eciton burchelli statary phase colony, A. Tishechkin (AKTC, 3ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 7/29/08–8/3/08, FIT, A.K.Tishechkin (AKTC, 3ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 8/3/08–8/6/08, FIT, LSAM Team (LSAM, 2ex.); Colombia: Vaupes, Est. Biol. Caparu, Rio Apoporis (-1.1, -69.5), 9/27/95–12/1/95, FIT, Black-water terrace forest on sandy soils, B. Gill (AKTC, 3ex.); Vaupes, Parco Nac. Mosiro-Itajura (Caparu), Centro Ambiental (-1.0667, -69.5167), 60 m, 1/20/03–1/30/03, FIT, D. Arias & M. Sharkey (AKTC, 1ex.).

Map 14.

Collecting records for Phelister gregarius (circles), P. rudis (black squares), and P. incongruens (stars).

Other material

Bolivia: Santa Cruz, Amboro National Park, Los Volcanes (-18.1, -63.6), 1000 m, 11/20/04–12/12/04, FIT, Mendel H. & Barclay, M.V.L. (NHMUK, 2ex.); Brazil: Amazonas, Reserva Ducke, AM-010, km 26 (-3, -59.94), 12/2/77, J. Arias, EXO-03349 (USNM, 1ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1984, FIT, EXO-03348 (CHND, 1ex.); Paraná, Piraquara (-25.4961, -48.9817), 9/3/07–9/10/07, P. Grossi, EXO-03347 (DZUP, 1ex.); Rondonia, Rio Jamari (-8.7833, -63.7), 12/1/88–12/12/88, FIT, EXO-03350 (CHND, 1ex.); Costa Rica: Puntarenas, Est. Biol. Las Alturas, Coto Brus (8.95, -82.8667), 1550 m, 3/25/03–3/30/03, FIT, A. Cline & A. Tishechkin, EXO-03343 (LSAM, 1ex.); Puntarenas, Est. Biol. Las Cruces (8.7833, -82.9583), 1100 m, 4/10/02, Sifting at recently abandoned bivouac site of Eciton burchelli nomadic phase bivouac, A. Tishechkin, EXO-00744 (LSAM, 1ex.); Puntarenas, Est. Pittier, Coto Brus, Senderos Pittier y Pelton (9.06, -82.93), 1670 m, 11/7/99, R. Gonzalez, INB0003153030 (INBIO, 1ex.); Puntarenas, San Vito Las Cruces (8.8, -83), 1200 m, 7/1/82–7/30/82, FIT, B. Gill, EXO-03344 (AKTC, 1ex.); San Jose, Cloudbridge Reserve, 2.4 km ENE Sn Gerardo de Rivas, Ridge trail (9.4678, -83.564), 2050 m, 6/9/04–6/12/04, FIT, J. Ashe, Z. Falin, I. Hinojosa, SM0659028 (SEMC, 1ex.); French Guiana: Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 1/25/11, FIT, SEAG, EXO-03351 (CHND, 1ex.); Belvédère de Saül, point de vue (3.6228, -53.2094), 1/31/11, FIT, SEAG (CHND, 1ex.); Panama: Chiriqui, 27.7 km W. Volcan Hartmann’s Finca (8.75, -82.8), 1450 m, 6/14/95–6/17/95, FIT, J. Ashe & R. Brooks, EXO-03352 (SEMC, 1ex.); Chiriqui, 4 km N Sta. Clara Hartmann’s Finca (8.75, -82.8), 1500 m, 6/30/82–7/13/82, FIT, B. Gill (AKTC, 2ex.); Darien, Cana Biological Station, Serrania de Pirre (7.755, -77.685), 1380 m, 6/4/96–6/7/96, FIT, J. Ashe & R. Brooks, SM0050908 (SEMC, 1ex.); Panama, Chepo-Charti Rd. (9.28, -79.1), 400 m, June 1982, FIT, B. Gill, EXO-03353 (CNCI, 1ex.); Peru: Junín, Pampa Hermosa Lodge, 22 km N San Ramon (-10.9883, -75.425), 1220 m, 11/14/07–11/27/07, FIT, D. Brzoska, SEMC0869361 (SEMC, 1ex.); Junín, 11 km NE Puerto Ocopa, Los Olivos (-11.05, -74.2587), 1200 m, 3/26/09–3/31/09, FIT, A. Petrov & A. Tishechkin (AKTC, 5ex.); Madre de Dios, Rio Los Amigos CICRA(Puerto) (-12.5709, -70.1018), 230 msm, 8/5/06, Colectados en: basurero de Eciton sp., A. Asenjo (MUSM Lima, 3ex.); Cusco, Villa Carmen Fld Stn., 12.89221°S, 71.41946°W, 555 m, 20–30.V.2011, DJ Bennett, FIT (SEMC, 1ex.); Suriname: Brokopondo, Ston Eiland Eco Resort nr. Brownsberg (4.9833, -55.1333), 2/10/10–2/13/10, FIT, C. Gillet, P. Skelley, W. Warner, EXO-03345 (FSCA, 1ex.); Pará, 11 km SE Zanderij Airport (5.3933, -55.1581), 30 m, 6/20/99, FIT, Z. Falin, EXO-03346 (CMNC, 1ex.); Venezuela: Amazonas, Cerro de la Neblina, base camp (0.8333, -66.1667), 140 m, 1/26/85–1/31/85, FIT, R.A. Faitoute, P.J. & P.M. Spangler & W.E. Steiner (USNM, 1ex.).

Figure 23.

A, B Phelister gregarius: A dorsal habitus B ventral habitus C, D P. praecisus: C dorsal habitus D ventral habitus E–G P. rudis: E dorsal habitus F ventral habitus G anterior view of protibia.

Diagnostic description

Length: 1.22–1.54 mm (avg. 1.39 mm); width: 1.14–1.26 mm (avg. 1.20 mm). Body elongate oval, rufescent, smooth, but with conspicuous ground punctation throughout; frons depressed along midline; supraorbital stria present, ends free; frontal stria complete, fine at middle; epistoma with edges raised but not subcarinate; labrum emarginate; mandibles lacking basal teeth; prescutellar impression subtriangular, with basal corners rounded, ~ 2 × as wide as scutellum; median pronotal gland openings ~ 2/3 behind anterior margin, distinctly annulate; pronotal disk with few sparse secondary punctures at sides, most slightly elongate and separated by their lengths or more; marginal pronotal stria complete along lateral and anterior margins, crenulate in front; submarginal stria short, present only in anterior corners, rarely absent; elytron with single, complete epipleural stria; outer subhumeral stria nearly complete, slightly abbreviated at base, inner subhumeral absent; dorsal striae 1–4 complete, 5^th present in apical 3/4 and as short basal arch, sutural stria present in apical 2/3; propygidium with dense, coarse secondary punctation; pygidium with ground punctation enlarged and dense; prosternal keel barely emarginate at base, striae converging sinuately to near apex; apex of keel abruptly narrowed at junction with prosternal lobe; prosternal lobe short, with complete marginal stria; mesoventrite weakly produced, with weak, complete marginal stria interrupted laterally by mesocoxa; postmesocoxal stria ending at middle of lateral portion of metaventrite; mesometaventral stria broadly arcuate across middle, reaching middle of mesoventrite, offset laterad at sides from lateral metaventral stria; lateral metaventral stria extending from mesometaventral suture to near middle of metacoxa; metaventrite with few secondary punctures near metacoxa, that of male weakly depressed at middle and with very short scale-like vestiture; 1^st abdominal ventrite coarse secondary punctation in anterior 1/2, with fragmented but nearly complete lateral stria along inner margin of metacoxa; protibia rather slender, outer margin weakly dentate, with five or six marginal spines, apical corner with distinct emargination; protarsi of male with flattened ventral setae; meso- and metatibiae slender, with rather long, fine marginal spines. Male: basal piece narrow, elongate, ~ 1/2 length of tegmen; tegmen with sides unevenly subparallel in basal 2/3, abruptly narrowed to ventrally curving apices; medioventral process present, projecting at basal 1/3 of tegmen, divided at middle; median lobe ~ 1/2 tegmen length, very narrow.

Etymology

This species name refers to its apparent predilection for socializing with army ant colonies, from which several records originate.

Distribution

This is a relatively common species, known from many specimens over a broad area from Costa Rica south to Peru, and east to Paraná, Brasil.

Remarks

Despite this species’ wide range, it is relatively consistent in morphology, and readily identifiable, by the rounded triangular shape of its prescutellar impression, relatively sparse lateral secondary punctures on the pronotum, and presence of only a short fragment of the submarginal pronotal stria in the anterior corners. It also appears to be unique in showing a distinct sexual dimorphism, with the males’ metaventrite being medially depressed as well as bearing a field of very short, almost imperceptible, scale-like setae. A few other species show a faint depression in males, but none as distinct as here.

Two specimens from Santa Cruz, Bolivia, and one from Junín, Peru have a complete lateral submarginal pronotal stria, and have pronotal microsculpture (like P. rudis), but have sparser dorsal sculpturing and an unbroken anterior marginal pronotal stria, so are ambiguous. We place these here for now, but additional material will be necessary to fully assess patterns of character variation. Specimens from Suriname have the lateral submarginal pronotal stria almost absent, represented by only a very short arc in the anterior corners.

Figure 24.

Male genitalia A–F Phelister gregarius: A tergite 8 B sternite 8 C tergites 9 & 10 D sternite 9 E aedeagus, dorsal F aedeagus, lateral G, H P. praecisus: G aedeagus, dorsal H tegmen, lateral I, J P. rudis: I aedeagus, dorsal J tegmen, lateral.

38. Phelister praecisus sp. nov.

http://zoobank.org/D5AAF7BC-18F8-496B-B5F5-D694F03009A1

Figs 23C, D, 24G, H, Map 13

Type material

Holotype male: “French Guiana: Saül, 7 km N, Les Eaux Claires 220 m, 3°39'46"N, 53°13'19"W [3.6628, -53.2219], 30 MAY–4 JUN 1997; J.Ashe, R.Brooks, FG1AB97 ex:flight intercept trap” / “SM0095852 KUNHM-ENT” (SEMC).

Other material

Colombia: Vaupes, Parco Nac. Mosiro-Itajura (Caparu) Centro Ambiental (-1.0667, -69.5167), 60 m, 1/20/03–1/30/03, FIT, D. Arias & M. Sharkey, EXO-02966 (MSCC, 1ex.); Ecuador: Orellana, Yasuni NP, Via Maxus at Puente Piraña, 0°39.5'S, 76°26'W, 245 m, flight intercept trap, 20–24.vii.2008, A. K. Tishechkin (AKTC, 2ex.); Peru: Madre de Dios, Rio Alto Madre de Dios Pantiacolla Lodge 12°39.3'S, 71°13.9'W [-12.6550, -71.2317], Flight intercept 14–19 Nov 2007, D.Brzoska, SEMC0903642 (SEMC, 1ex.).

Diagnostic description

Length: 1.89–2.17 mm (avg. 2.03 mm); width: 1.58–1.93 mm (avg. 1.71 mm). Body elongate oval, dark rufescent, with conspicuous ground punctation throughout; frons depressed along midline; supraorbital stria present, ends free; frontal stria complete, fine at middle; frontal disk with ground punctation but lacking secondary punctures; epistoma broad, with edges raised, subcarinate; labrum weakly emarginate; left mandible with blunt basal tooth, that of right mandible small, subacute; pronotum slightly elongate, sides weakly convergent; prescutellar impression broadly oval, ~ 4 × as wide as scutellum; median pronotal gland openings ~ 2/3 behind anterior margin, distinctly annulate; pronotal disk with numerous secondary punctures at sides; marginal pronotal stria complete along lateral and anterior margins, very close to margin anteriorly; submarginal stria present at sides and front, lateral portion complete (French Guiana) or abbreviated (others), anterior portion detached from lateral, briefly recurved behind eyes; elytron with single, complete epipleural stria; outer subhumeral stria fine, nearly complete, slightly abbreviated at base, inner subhumeral absent; dorsal striae 1–4 complete, 5^th present in apical 3/4 and as short basal arch, sutural stria slightly longer than 5^th, obsolete at base; propygidium with secondary punctures separated by ~ 1.5 × their diameters; pygidium with only few small secondary punctures along base; prosternal keel shallowly emarginate at base, striae united at base and apex, enclosing narrow area; secondary striae present along basal 1/2 of keel; prosternal lobe slightly reflexed, with complete marginal stria; mesoventrite weakly produced, with very fine, complete marginal stria continued laterally by postmesocoxal stria to middle of lateral portion of metaventrite; mesometaventral stria weakly angulate at middle, reaching anterior third of mesoventrite, continued at sides by lateral metaventral stria; lateral metaventral stria extending from mesometaventral suture to near outer 1/3 of metacoxa; metaventrite with few small secondary punctures near metacoxa; 1^st abdominal ventrite with complete inner and partial outer lateral striae along inner margin of metacoxa; protibia with outer margin strongly dentate, with five or six marginal spines, apical corner with shallow emargination (mediad apical spine); protarsi of male with flattened ventral setae; meso- and metatibiae with rather long, fine marginal spines. Male: basal piece wide, ~ 1/3 length of tegmen; tegmen with sides subparallel in basal 1/2, then widened to spoon-shaped apex; apical lobes produced laterally over main body of tegmen; medioventral process present, weak, not projecting ventrally, divided at middle; median lobe ~ 1/2 tegmen length, basal apodemes narrowed.

Etymology

This species name, praecisus, translates as cut, referring to the interrupted anterior pronotal stria

Distribution

This species is known from a few localities across northern Amazonia, Ecuador and Colombia, as well as French Guiana.

Remarks

This species is difficult to characterize, because it varies considerably in morphology among available material. All series are short and most are all female. We designate as type a singleton male from French Guiana, which differs from most other specimens in its complete lateral submarginal pronotal stria; this is abbreviated posteriorly in most (but not all) others. All available specimens share a very broadly semicircular prescutellar impression, a pattern of dorsal punctation with the pronotal ground punctation slightly denser than that of the elytra (though neither is very dense), and the presence of a number of secondary punctures on the metaventrite anteromediad the hind coxae. The interrupted 5^th elytral stria (with a basal arch) is unusual, as is their prosternal keel that is weakly emarginate at base, narrow, with its striae united anteriorly and posteriorly.

39. Phelister rudis sp. nov.

http://zoobank.org/D5494642-A523-46AE-886B-62B775592D33

Figs 23E–G, 24I, J, Map 14

Type material

Holotype male: “Panama: Colón Prov., San Lorenzo Forest, STRI crane site. 9°17'N, 79°58'W [9.2833, -79.9667], FIT-Z-7, 19–20 May 2004, A. Tishechkin. AT-478” / “Phelister sp #16, San Lorenzo Inventory, A.L.Tishechkin det 2010” / “Caterino/Tishechkin Exosternini Voucher EXO-00444” (FMNH). Paratypes (3): Panama: Colon, 14 km N jct. Escobal & Pina Rds. (9.2, -79.9), 6/2/96–6/11/96, FIT, J. Ashe & R. Brooks, SM0041133 (SEMC, 1ex.); Colon, San Lorenzo Forest, STRI crane site (9.2833, -79.9667), 5/19/04–5/25/04, FIT, A. Tishechkin (AKTC, 1ex.); Panama, Chepo-Charti Rd. (9.28, -79.1), 400 m, June 1982, FIT, B. Gill, EXO-03337 (CNCI, 1ex.).

Other material

Bolivia: Cochabamba, Cochabamba, 67.5 km NE Est. Biol. Valle del Sajita Univ. de San Simon (-17.1092, -64.7978), 300 m, 2/7/99–2/9/99, FIT, R. Hanley, SM0161392 (SEMC, 1ex.); Ecuador: Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 6/23/99–6/30/99, FIT, C. Carlton & A. Tishechkin, LSAM 0045443 (LSAM, 1ex.); Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 7/28/08–7/31/08, FIT, A.K.Tishechkin (AKTC, 2ex.); Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/11/08–7/26/08, FIT, A. Tishechkin (AKTC & LSAM, 2ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 07/5–11/1999, FIT, C. Carlton & A. Tishechkin, LSAM 0045451 (LSAM, 1ex.); Orellana, Est. Cientifica Yasuní, mid. Rio Tiputini (-0.675, -76.4), 8/6/99, Eciton burchelli colony EC#27, refuse deposit during statary phase, A. Tishechkin, LSAM 0045444 (LSAM, 1ex.); Peru: Junín, 11 km NE Puerto Ocopa, Los Olivos (-11.05, -74.2587), 1200 m, 3/23/09–3/24/09, FIT, A. Tishechkin, EXO-00948 (AKTC, 1ex.); Loreto, 1.5 km N Teniente Lopez (-2.5943, -76.1153), 210–240 m, 7/20/93, FIT, R. Leschen, EXO-03338 (SEMC, 1ex.); Loreto, Iquitos (-3.74, -73.27), 90 m, 5/5/92, FIT, J. Danoff-Berg, EXO-03339 (SEMC, 1ex.); Loreto, km 63, rd. Iquitos – Nauta, Rio Itaya (-4.2534, -73.4346), 140 m, 2/05/10–2/06/10, A.V. Petrov (AKTC, 1ex.); Junín, ~ 16 km NW Satipo, Rio Venado (-11.1989, -74.7705), 1500 m, 3/08/10–3/14/10, A.V. Petrov (AKTC, 1ex.); Junín, ~ 16 km NW Satipo, Rio Venado (-11.1989, -74.7705), 3/03/10–3/08/10, A.V. Petrov (AKTC, 2ex.).

Diagnostic description

Length: 1.69–1.89 mm (avg. 1.80 mm); width: 1.42–1.54 mm (avg. 1.48 mm). This species is extremely similar to the preceding two (P. gregarius and P. praecisus), differing principally in the following characters: frons with microsculpture within frontal depression; prescutellar impression broadly semi-oval; mandibles each with distinct basal tooth; pronotum with marginal stria continuous around sides and front; submarginal pronotal stria present in anterior 1/2 at sides, anterior portion broken and recurved behind eyes; outer subhumeral elytral stria present in apical 1/2 only, rarely with detached basal appendix (especially in Peruvian examples); prosternal keel weakly narrowed anteriorly, with striae complete, united anteriorly only; prosternal lobe short; mesometaventral stria strongly angulate to near marginal mesoventral stria; male metaventrite not depressed; protibia with apical spine prominent, other marginal spines rather fine and slightly separated from it. Male: basal piece broad, short, ~ 1/3 length of tegmen; tegmen with sides subparallel in basal 1/2, then widened slightly to rounded apices, thick and notably curved in lateral view; medioventral process absent; median lobe ~ 1/2 tegmen length, with basal apodemes widely separated.

Etymology

The name rudis, or rough, refers to the unusual microsculpture of the frons.

Distribution

This species is known from Panama as well as much of western Amazonia, from Ecuador to Bolivia.

Remarks

We assign specimens from a broad area, ranging from Panama, southward along western South America to Bolivia, to this species. However, we restrict the type series to Panamanian specimens, as there is some variation, and other areas are poorly represented. Most specimens (all those from the type locality) exhibit distinct microsculpture within the frontal depression. This is quite unusual in this group, and within Phelister as a whole (being otherwise occasional in some Operclipygus spp.). The species is quite similar in other respects to P. gregarius and P. praecisus. From the former it consistently differs by its broadly oval prescutellar impression (subtriangular in P. gregarius) and the broken anterior submarginal pronotal stria. From P. praecisus it differs in having a shorter outer subhumeral stria, and prosternal keel striae that are not united at the base. Specimens from Peru tend to have several metaventral punctures, which is otherwise only found in P. gregarius (at least among these species), but these males don’t have a depressed metaventrite, as those of P. gregarius do.

40. Phelister incongruens sp. nov.

http://zoobank.org/E0DB2EAA-0086-45BD-BEE5-3CCE7CBD578D

Figs 25A, B, 26A, B, Map 14

Type material

Holotype male: “Guyane Française: Réserve des Nouragues 4°43'N, -52°24'W [4.0378, -52.6725], piège d’interception 30 Sep 2009, SEAG leg.” / “Caterino/Tishechkin Exosternini Voucher EXO-00455 (MNHN). Paratypes (4): French Guiana: Régina, Rés. Natur. des Nouragues, Camp Inselberg (4.0833, -52.6833), 1/25/11, FIT, SEAG, EXO-03220 (CHND, 1ex.); Mont Tabulaire Itoupé (3.0303, -53.1067), 400 m, 3/17/10, FIT, SEAG, EXO-03357 (CHND, 1ex.); Mont Tabulaire Itoupé (3.0303, -53.1067), 400 m, 3/23/10, FIT, SEAG, EXO-00373 (CHND, 1ex.); Amazone Nature Lodge, 300 m, 4.55033°N, 52.17031°W flight intercept. 11–23.viii.2017, R.Morris & J.Wappes” (AKTC 1ex.).

Figure 25.

A, B Phelister incongruens: A dorsal habitus B ventral habitus C, D P. congruens: C dorsal habitus D ventral habitus E, F P. praesignis: E dorsal habitus F ventral habitus.

Diagnostic description

Length: 1.93–2.29 mm (avg. 2.15 mm); width: 1.62–1.97 mm (avg. 1.85 mm). Body elongate oval, convex, variably rufescent, with very conspicuous ground punctation everywhere, on pronotum uniformly intermingled with secondary punctation; frons weakly depressed; supraorbital stria present, ends free; frontal stria fine, complete; epistoma broad, with edges raised; labrum wide, deeply emarginate; left mandible with short, blunt basal tooth, that of right mandible small, acute; prescutellar impression slightly elongate, only slightly wider than scutellum; median pronotal gland openings obscured by punctation, possibly absent; marginal pronotal stria complete along lateral margin; lateral submarginal stria complete, continuous with marginal stria behind head; elytron with single, complete epipleural stria; outer subhumeral stria fine, present at base and apex, narrowly interrupted at middle, inner subhumeral absent; dorsal striae 1–5 and sutural complete, 5^th arched to sutural stria; propygidium with small secondary punctures sparsely intermingled with ground punctation, that of pygidium finer and mainly in basal 1/2; prosternal keel weakly emarginate at base, striae united at base and apex, secondary striae present along basal 1/2 of keel, keel narrowed anteriorly; prosternal lobe short, with complete marginal stria; mesoventrite weakly produced, with complete marginal stria continued laterally by postmesocoxal stria which ends behind posterior corner of mesocoxa; mesometaventral stria arcuate across middle, reaching middle of mesoventrite, continued at sides by lateral metaventral stria to middle of metacoxa; metaventrite of male weakly depressed, with very dense ground punctation, with larger secondary punctures near metacoxa; metaventrite of female flat, with larger secondary punctures; 1^st abdominal ventrite with two incomplete lateral striae, the anterior 1/2 of disk with dense secondary punctures; protibia with outer margin weakly dentate but strongly spinose, with five or six marginal spines, the apical most particularly prominent, with a shallow emargination along apical margin; meso- and metatibiae with rather long, fine marginal spines largely restricted to distal halves. Male: basal piece narrow, ~ 1/3 length of tegmen; tegmen with sides subparallel in basal 2/3, abruptly narrowed to hooked apices; medioventral process present, projecting at basal 1/3 of tegmen, divided at middle; median lobe ~ 1/2 tegmen length, abruptly narrowed to bases.

Etymology

The name refers to the very different, incongruous, punctation on the pronotum vs. the elytra.

Distribution

This species is known only from a couple of localities in French Guiana.

Remarks

This species is distinct in the distribution of surface sculpture, with its ground punctation conspicuous everywhere, that on the pronotum uniformly interspersed with coarse secondary punctation (not restricted to sides). Additionally, the venter exhibits distinct macrosculpture all over. The interrupted outer subhumeral stria is an unusual character but is seen in a few other species in this group. It is particularly similar to P. praesignis but has the secondary punctation of the pronotum larger yet slightly sparser, and the ground punctation of the pronotum and especially the elytra distinctly finer. It is also more broadly rounded, and has a complete submarginal pronotal stria, absent in P. praesignis.

While all (five) specimens of this species are from French Guiana, they fall into two distinct size classes, with the smaller ones (two males, one female) also lighter in color. However, no other differences are apparent, and we assume we have not captured the full range of variation with so few specimens.

Figure 26.

Male genitalia A, B Phelister incongruens: A aedeagus, dorsal B aedeagus, lateral C, D P. congruens: C aedeagus, dorsal D aedeagus, lateral E, F P. praesignis: E aedeagus, dorsal F aedeagus, lateral.

41. Phelister congruens sp. nov.

http://zoobank.org/13505EFC-8B7A-43A5-A56D-EF55751B4F19

Figs 25C, D, 26C, D, Map 15

Type material

Holotype male: “Peru: Dept. Loreto, 1.5 km N Teniente Lopez -2°35.66'S, 76°06.92'W [-2.5943, -76.1153], 18 July 1993, 210–240 m, Richard Leschen #119 ex:flight intercept trap” / “SEMC0903645 KUNHM-ENT” (SEMC). Paratypes (13): Colombia: Vaupes, Parco Nac. Mosiro-Itajura (Caparu), Centro Ambiental (-1.0667, -69.5167), 60 m, 1/20/03–1/30/03, FIT, D. Arias & M. Sharkey, EXO-03437 (AKTC, 1ex.); Peru: Loreto, Iquitos – Nauta rd., km 58, Rio Itaya (-4.2563, -73.4675), 120 m, 5/5/09–5/9/09, Window trap next to entrance into Eciton burchelli statary bivouac in a hollow tree, A.V. Petrov (AKTC, 2ex.); Ecuador: Orellana, Est. Cientifica Yasuní (-0.6744, -76.6472), 215 m, 9/5/99–9/10/99, FIT, primary forest, E. Riley (LSAM, 2ex.); Orellana, Est. Cientifica Yasuní (-0.6744, -76.6472), 7/12/08–7/24/08, FIT, A. Tishechkin (AKTC, 5 ex.); Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/12/08–7/19/08, FIT, A. Tishechkin (AKTC & LSAM, 2ex.); Orellana, P.N. Yasuní, Via Maxus at Puente Piraña (-0.6583, -76.4333), 7/14/08–7/20/08, FIT, A. Tishechkin, EXO-03356 (AKTC, 1ex.).

Map 15.

Collecting records for Phelister congruens (white circles), P. praesignis (square), P. umens (stars), and P. almeidae (black circles).

Diagnostic description

Length: 1.38–1.77 mm (avg. 1.56 mm); width: 1.22–1.58 mm (avg. 1.37 mm). Body elongate oval, convex, rufescent, with very conspicuous ground punctation, and no secondary punctation throughout; frons depressed along midline; supraorbital stria present, ends free; frontal stria complete; epistoma broad, with edges raised; labrum emarginate; left mandible with short, blunt basal tooth, that of right mandible small, acute; prescutellar impression semicircular, ~ twice as wide as scutellum; median pronotal gland openings obscured by ground punctation, but apparently present ~ 3/4 behind anterior pronotal margin, within a small elongate impunctate area, not distinctly annulate; marginal pronotal stria complete along lateral and anterior margins; submarginal stria absent; elytron with single, complete epipleural stria; outer subhumeral stria fine, present at base and apex, interrupted at middle, inner subhumeral absent; dorsal striae 1–5 complete, 5^th arched to sutural, the sutural stria obsolete in basal one-sixth; propygidium with secondary punctures separated by ~ 1.5 × their diameters; pygidium with only few small secondary punctures along base; prosternal keel subtruncate at base, striae united at base and apex, secondary striae present along basal 1/2 of keel; prosternal keel and meso- & metaventral disks of male bearing very short scale-like setae; prosternal lobe short, with complete marginal stria; mesoventrite not, or only weakly produced, with complete marginal stria continued laterally by postmesocoxal stria to middle of lateral portion of metaventrite; mesometaventral stria arcuate across middle, reaching middle of mesoventrite, continued at sides by lateral metaventral stria; lateral metaventral stria extending from mesometaventral suture to near middle of metacoxa; metaventrite of male not depressed; 1^st abdominal ventrite with complete inner displaced mediad, and partial outer lateral striae along inner margin of metacoxa; protibia with outer margin weakly dentate but strongly spinose, with five or six marginal spines, apical corner with shallow emargination (mediad apical spine); protarsi of male with ventral setae not flattened; mesotibia with rather long, fine marginal spines in apical 1/2, those of metatibia very fine to obsolete. Male: basal piece elongate, slightly > 1/3 length of tegmen; tegmen with sides unevenly subparallel in basal 3/4, abruptly narrowed to hooked apices; medioventral process present, projecting at basal 1/3 of tegmen, divided at middle; median lobe ~1/2 tegmen length, basal apodemes abruptly narrowed.

Etymology

This species name is meant to contrast with the above (P. incongruens), given the similar, congruous, punctation of its pronotum and elytra.

Distribution

This species is only known from a fairly small area in Amazonian Colombia, Ecuador and northeastern Peru.

Remarks

This species can be readily identified by its consistently dense ground punctation, and lack of interspersed secondary punctures, at least on the pronotum and elytra, as well as the complete lack of submarginal pronotal stria. Its sexual dimorphism is also unique, with the male ventrites not depressed, but bearing very short scale-like setae. There is a surprising degree of size variation among individuals of this species, including among specimens from single localities. However, we can find no other significant characters in which they differ.

42. Phelister praesignis sp. nov.

http://zoobank.org/6973F855-0AB3-4C10-8146-0512A22C1DAA

Figs 25E, F, 26E, F, Map 15

Type material

Holotype male: “Peru: Junín, 11 km NE Puerto Ocopa, Los Olivos, 11°3.00'S, 74°15.52'W [-11.05, -74.2587],1200 m, Flight intercept. 25–26.iii.2009, A.K.Tishechkin. AT1075” / “Caterino DNA Voucher, Extraction: MSC-2284, Species: Phelister ~ completus, Extraction Date: i.27.2012” / “Caterino/Tishechkin Exosternini Voucher EXO-00940” (FMNH). Paratypes (3): Peru: Junín, 11 km NE Puerto Ocopa, Los Olivos (-11.05, -74.2587), 1200, 3/27/09–3/28/09, FIT, A. Tishechkin (AKTC, 1ex.); Junín, ~ 16 km NW Satipo, Rio Venado (-11.1989, -74.7705), 1110 m, 2/19/10–2/20/10, A.V. Petrov, EXO-02418 (AKTC, 1ex.); Junín, ~ 15 km NW Satipo, Rio Venado (-11.1979, -74.77), 1100 m, 2/14/13, window trap, A.V. Petrov (AKTC, 1ex.).

Other material

Brazil: Pará, Carajás (Serra Norte) (-6.0667, -50.2), October 1986, FIT (CHND, 2ex.).

Diagnostic description

Length: 1.97–2.25 mm (avg. 2.14 mm); width: 1.73–1.97 mm (avg. 1.88 mm). This species is very similar to the preceding (P. congruens) in most characters, differing consistently in the following: body larger, more elongate, darker; dorsal punctation denser, particularly pronotum, where slightly larger secondary punctures are intermingled with dense ground punctation; prescutellar impression smaller, more elongate, ~ 1.5 × scutellum size; anterolateral pronotal corners unusually convex, appearing ‘inflated’; outer subhumeral stria weak and short, at most in apical 1/4; prosternal keel not appreciably narrowed anteriorly; male metaventrite weakly impressed and bearing minute setae; meso- and metatibiae slender, edges straight, with only few weak apical spines; male protarsal spines flattened and expanded. Male: basal piece narrow, elongate, slightly > 1/3 length of tegmen; tegmen narrow with sides weakly widened to middle, then abruptly narrowed to weakly hooked apices; medioventral process present, projecting at basal fourth of tegmen, divided at middle; median lobe ~ 1/3 tegmen length, basal apodemes abruptly narrowed

Etymology

The name praesignis refers to the ‘outstanding’ appearance of this unusual species.

Distribution

This species is known from two rather widely separated localities, in Amazonian Peru as well as southern Pará (Brazil).

Remarks

This species is quite similar to the preceding two (P. incongruens and P. congruens), with strong dorsal punctation especially on the pronotum. These also share the distinctive non-spinose metatibia. Phelister praesignis is narrower in overall body form than these, and has the secondary pronotal punctation denser, though the individual secondary punctures are not as large as those of P. incongruens. In P. congruens, the pronotal punctation, while dense, is entirely composed of finer ground punctures. The slightly swollen anterior pronotal corners of P. praesignis are also unique.

P. umens subgroup

This subgroup comprises five species, defined principally by the ‘scalloped’ protibia (a convergence with that of P. geminus and P. serratus, we believe) and the apically fringed eighth male sternite.

Genitalic characters:

Aedeagus rather short, basally subparallel, tapered in apical 1/2
Medioventral process of tegmen present or not
T8 basal membrane attachment line coincident with apex of basal emargination
Accessory sclerites absent
S8 with broad setal fringe
S9 gradually expanded in apical 1/2
T10 divided

External characters:

Scalloped protibia
Lateral metaventral stria parallel to postmesocoxal stria on side of metaventrite
Prosternal keel striae weak to obsolete
Simple, abbreviated 4 ^th elytral stria, with no basal arch

43. Phelister umens sp. nov.

http://zoobank.org/36031FCA-64CE-49F5-B1EA-BE68F8E7E0D1

Figs 27A, B, 28A–F, Map 15

Type material

Holotype male: “Brazil: Am[azonas]. Reserva Ducke, 26 km NE, Manaus [-3, -59.94] Barbosa M.G.V.” / “Plot B, FIT1, Feb. 1995” / “Caterino/Tishechkin Exosternini Voucher EXO-00386 (NHMUK). Paratypes (6): Brazil: Amazonas, Reserva Ducke, 26 km NE, Manaus (-3, -59.94), February 1995, FIT, Barbosa M.G.V., EXO-00386 (NHMUK, 1ex.); Amazonas, Reserva Ducke, 26 km NE, Manaus (-3, -59.94), December 1995, Leaf litter, Barbosa M.G.V., EXO-03286 (NHMUK, 1ex.); Amazonas, Manaus (-3, -59.94), August 1935, G.V. Vrendenburg, EXO-03287 (NHMUK, 1ex.); Amazonas, Presidente Figueiredo, 2.017°S, 59.717°W, 17.ix.2009, FIT, FWT Leivas (DZUP, 2ex.); Amazonas, Fazenda Esteio [-2.38, -59.88], Rd. ZF3, KM23, 5.VII.1985, human dung bait, Bert Klein (FSCA, 1ex.).

Other material

Brazil: Amapá, Rio Calçoene lg. do Tigre (2.4, -51.2), 8/6/61–8/8/61, J. & B. Bechyne, EXO-03288 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), September 1984, FIT, EXO-03289 (CHND, 1ex.); Colombia: Vaupes, Parco Nac. Mosiro-Itajura (Caparu), Centro Ambiental (-1.0667, -69.5167), 60 m, 1/20/03–1/30/03, FIT, D. Arias & M. Sharkey (AKTC, 1ex.); Ecuador: Orellana, Est. Biodiv. Tiputini (-0.64, -76.15), 7/30/08, FIT, A.K.Tishechkin (AKTC, 1ex.); Orellana, Est. Cientifica Yasuní (-0.675, -76.4), 7/17/08–7/19/08, FIT, A. Tishechkin (AKTC, 1ex.); Orellana, Est. Cientifica Yasuní, Rio Tiputini (-0.675, -76.4), 7/26/99–8/4/99, FIT, A. Tishechkin, LSAM 0045448 (LSAM, 1ex.); French Guiana: Acarouany (5.6, -53.8), 11/6/75, Piège + excr. humain, EXO-03293 (CHND, 1ex.); Acarouany, Rte. de St. Laurent (5.6, -53.8), 12/27/75, EXO-03294 (CHND, 1ex.); Crique Anguille (4.83, -52.5), 11/1/79, Excr. humain, EXO-03296 (CHND, 1ex.); Mont Tabulaire Itoupé (3.0303, -53.1067), 400 m, 3/17/10, FIT, SEAG, EXO-03297 (CHND, 1ex.); piste Acarouany – St. Laurent du Maroni (5.55, -53.9333), 12/27/75, Piège + cad. oiseau (CHND, 2ex.); Route Nac. 2, P.K. 47 (4.6333, -52.3667), 7/11/78, Piège + cad. de serpent, EXO-03295 (CHND, 1ex.); Peru: Junín, ~ 16 km NW Satipo, Rio Venado (-11.1989, -74.7705), 1150 m, 3/08/10–3/14/10, A.V. Petrov (AKTC, 1ex.); Junín, ~ 15 km NW Satipo, Rio Venado at 11°11'40"S, 74°46'8"W, 1195 m, window trap, 27.i.2019, A. V. Petrov (AKTC, 1ex.); Junín, ~ 15 km NW Satipo, nr. Rio Venado at 11°11.1–8'S, 74°46.0–2'W, 1100–1400 m, 4/20/19–5/18/19, A. V. Sokolov (AVSC, 1ex.); Cusco, La Convencion, Echarate, CN Timpia (-12.0621, -72.8516), 454 m, 22.x.2009, M.Alvarado, E.Rázuri (MUSM, 1ex.). Suriname: Pará, nr. Overbridge River Resort (5.53, -55.0583), 2/10/10–2/18/10, FIT, P. Skelley, C. Gillett (FSCA, 3ex.); Pará, nr. Overbridge at 5.5195, -55.0695, 2/10/10–2/14/10, FIT, W.B. Warner (AKTC & WBWC, 11ex.); Brokopondo, Ston Eiland Eco Resort nr. Brownsberg (4.9833, -55.1333), 2/10/10–2/13/10, FIT, C. Gillet, P. Skelley, W. Warner, EXO-03334 (FSCA, 1ex.); Sipaliwini, CI-RAP Surv. Camp 1: on Kutari River (-2.1753, -56.7874), 228 m, 8/19/10–8/24/10, FIT, T. Larsen & A.E.Z. Short (SEMC, 1ex.); Sipaliwini, CI-RAP Surv. Camp 1: upper Palumeu River (2.4770°N, 55.6294°W), 275 m, FIT, 3/10/12–3/16/12, A.E.Z. Short (AKTC & SEMC, 6ex.); Sipaliwini, CI-RAP Surv. Camp 4: on lower Kasikasima River (2.9773, -55.3850), 200 m, 3/20/12–3/25/12, FIT, T. Larsen (SEMC, 1ex.).

Figure 27.

A, B Phelister umens: A dorsal habitus B ventral habitus C, D P. almeidae: C dorsal habitus D ventral habitus E, F P. chicomendesi: E dorsal habitus F ventral habitus.

Diagnostic description

Length: 1.58–1.77 mm (avg. 1.69 mm); width: 1.34–1.54 mm (avg. 1.47 mm). Body elongate oval, weakly depressed, rufescent, with fairly conspicuous ground punctation; frons weakly depressed in middle, supraorbital stria abbreviated at sides, frontal stria complete, sinuate through depression; epistoma depressed at middle, sides raised; labrum emarginate at apex, each mandible with very small basal tooth; prescutellar impression oval, ~ 1.5 × as wide as scutellum; pronotal disk with few to ~ 20 larger secondary punctures near sides; marginal pronotal stria complete along sides and front; lateral submarginal stria usually abbreviated from base, obsolete in basal 1/4, continuing around anterior angle, ending freely near anterior marginal stria; median pronotal gland openings annulate, ~ 2/3 behind anterior pronotal margin; elytron with single, complete epipleural stria; outer and inner subhumeral striae absent; dorsal stria one abbreviated apically, present in basal 1/2 to 2/3, stria two nearly complete, may be abbreviated from apex, stria three present in apical 1/3 and represented by very fine scratch-like stria in basal 1/3, striae four and five both present in apical 1/3, sutural stria in apical 1/2 to 2/3; propygidium with dense secondary punctures, sparser posterad; pygidial secondary punctures much smaller and sparser, finer toward apex; prosternal keel emarginate at base, striae weakly impressed, may be interrupted by conspicuous gland openings between coxae, free anteriorly; prosternal keel-lobe junction narrowed, lobe rounded, with complete marginal stria; mesoventrite wide and short, produced anteriorly at middle, with fine marginal stria continued at side by short postmesocoxal stria which ends behind mesocoxa; meso-metaventral stria angulate at middle, reaching middle of mesoventrite; lateral metaventral stria short, diverging, ending freely behind mesocoxa; metaventrite impunctate; 1^st abdominal ventrite with lateral stria interrupted at gland opening mesad posterior corner of metacoxa; protibia with outer margin sinuate, ‘scalloped’, with marginal spines tiny, inconspicuous, set within close-spaced marginal incisions; mesotibia with outer edge rounded, with rather robust marginal spines; metatibia more slender, with finer marginal spines. Male: S8 with dense, long setal fringe; aedeagus with basal piece ~ 1/3 length of tegmen; tegmen with sides unevenly subparallel in basal 2/3, evenly narrowed to subacute apices, largely straight in lateral view; medioventral process absent; median lobe ~ 3/4 tegmen length, basal apodemes abruptly narrowed.

Etymology

This species name, umens, means wet or humid, referring to this species’ Amazonian rainforest habitat.

Distribution

Records of this species extend from Amazonian Ecuador east along the Amazon River to Pará, Brazil, as well as to the northeast in Suriname and French Guiana.

Remarks

The members of this small species group are all quite similar, having more or less ‘scalloped’ protibiae, weak to obsolete prosternal keel striae, the 1^st elytral stria tending to be obsolete posteriorly, and the lateral pronotal margin somewhat compressed, or bent down outside the submarginal stria. Among these, P. umens is distinguished in external characters by having the lateral submarginal pronotal stria slightly abbreviated posteriorly (in others it may be either more complete, or substantially abbreviated), having the subhumeral striae absent, and in having quite dense propygidial punctation.

Figure 28.

Male genitalia A–F Phelister umens: A tergite 8 B sternite 8 C tergites 9 & 10 D sternite 9 E aedeagus, dorsal F aedeagus, lateral G, H P. almeidae: G aedeagus, dorsal H tegmen, lateral I, J P. chicomendesi: I aedeagus, dorsal J tegmen, lateral.

44. Phelister almeidae sp. nov.

http://zoobank.org/E493CD5E-6141-435D-84D1-0D713BD6CC37

Figs 27C, D, 28G, H, Map 15

Type material

Holotype male: “Brazil: Paraná, Piraquara, Mananciais da Serra, 1000 m, 25°29.77'S, 48°58.90'W [-25.4961, -48.9817], intercep. de võo. Jan 2007 P. Grossi & D. Parizotto” / “Caterino/Tishechkin Exosternini Voucher EXO-00547” (DZUP). Paratypes (17): Brazil: Paraná, Campina Grande do Sul, Estrada da Mandacaia – 1800 (-25.3, -49.04), 12/26/08, FIT, F.W.T. Leivas (DZUP, CESP, 4ex.); Paraná, Campina Grande do Sul, Estrada da Mandacaia – 1800 (-25.3, -49.04), 1/31/09, FIT, F.W.T. Leivas (DZUP, 3ex.); Paraná, Mpio. Curitiba, nr. Campina Grande do Sul (-25.2965, -49.0381), 12/7/11–12/10/11, FIT, F.W.T. Leivas (MSCC, 2ex.); Paraná, Piraquara (-25.4961, -48.9817), 09/3/07–09/10/07, P. Grossi (DZUP, 2ex.); Paraná, Piraquara, Mananciais da Serra (-25.4961, -48.9817), 1000 m, 10/17/07–10/31/07, FIT, P. Grossi & D. Parizotto (CHND, 2ex.); Paraná, Piraquara, Mananciais da Serra (-25.4961, -48.9817), 1000 m, 11/1/07–11/8/07, FIT, P. Grossi & D. Parizotto, EXO-03299 (CHND, 1ex.); Paraná, Piraquara, Mananciais da Serra (-25.4961, -48.9817), 1000 m, 11/8/07–11/23/07, FIT, P. Grossi & D. Parizotto, EXO-03300 (CHND, 1ex.); Paraná, Piraquara, Mananciais da Serra (-25.4961, -48.9817), 1000 m, January 2007, FIT, P. Grossi & D. Parizotto (CHND, 2ex.).

Other material

Brazil: Paraná [sic] Tucuruí, Sept. 1984, FIT (CHND 1ex.). This specimen is labelled as written. However, Tucuruí is in Pará state. Whether this specimen is in fact from this disjunct locality seems unlikely, and we suspect it is from some other locality in Paraná.

Diagnostic description

Length: 1.54–1.81 mm (avg. 1.68 mm); width: 1.26–1.50 mm (avg. 1.37 mm). Body elongate oval, weakly depressed, dark rufescent, with fairly conspicuous ground punctation; frons broad, distinctly widened anteriorly, weakly depressed in middle, supraorbital stria complete, meeting frontal stria at sides, frontal stria complete, sinuate through depression; epistoma depressed at middle, sides raised; labrum sinuate, not emarginate, at apex, each mandible with very small basal tooth; prescutellar impression oval, barely larger than scutellum; pronotal disk with few secondary punctures near sides; marginal pronotal stria complete along sides and front, occasionally joining end of submarginal behind eye, thus interrupted; lateral submarginal stria obsolete in basal 1/2, continuing around anterior angle, ending freely near anterior marginal stria or joining it; median pronotal gland openings annulate, slightly > 1/2 pronotal length behind anterior margin; elytron with single, complete epipleural stria; outer subhumeral stria present in apical 1/2, inner absent; dorsal stria one weakened to obsolete in apical 1/2, striae two and three complete, striae four and five both present in apical 1/2, sutural stria present in apical 2/3; propygidium with secondary punctures separated by about their diameters at base, sparser posterad; pygidial secondary punctures smaller and sparser; prosternal keel shallowly emarginate at base, striae separated at base or weakly joined along basal margin, united anteriorly; prosternal keel-lobe junction slightly narrowed, lobe short, rounded, with complete marginal stria; mesoventrite wide and short, produced anteriorly at middle, with fine marginal stria continued at side by short postmesocoxal stria which ends behind mesocoxa; meso-metaventral stria angulate at middle, reaching middle of mesoventrite; lateral metaventral stria diverging, ending freely at middle of lateral portion of metaventrite; metaventrite impunctate; 1^st abdominal ventrite with lateral stria complete or interrupted at gland opening mesad posterior corner of metacoxa; protibia with outer margin sinuate, ‘scalloped’, mainly in apical 1/2; meso- and metatibiae with fine marginal spines mainly in apical halves. Male: S8 with setal fringe; aedeagus with basal piece ~ 1/3 length of tegmen; tegmen with sides subparallel in basal 2/3, abruptly narrowed to bluntly rounded apices, largely straight in lateral view; medioventral process absent; median lobe ~ 5/6 tegmen length, basal apodemes thick over most of their lengths abruptly narrowed at extreme bases.

Etymology

We name this species in honor of Dr. Lúcia Massutti de Almeida, of the Universidade Federal do Paraná, in recognition of her mentorship of several outstanding histeridologists, and in gratitude for her hospitality to the authors during a 2011 visit.

Distribution

This species is only known from a few localities, all within Paraná (Brazil).

Remarks

This species is very similar to the preceding, but differs in a number of respects, having the prescutellar impression elongate oval and only slightly larger than the scutellum, the pronotal gland openings more anterior, a more strongly abbreviated lateral submarginal pronotal stria, an outer subhumeral present apically, and having the 3^rd dorsal elytral stria complete. Ventrally the prosternal keel striae are also more distinctly impressed in this species.

45. Phelister chicomendesi sp. nov.

http://zoobank.org/442A0CF6-258B-49A5-AD5D-9B4DF7D155D1

Figs 27E, F, 28I, J, Map 16

Type material

Holotype male: “Brazil: Pará, Carajás (Serra Norte) 6°04'S, 50°12'W [-6.0667, -50.2], Piège d’interception. Iii.1989” / “Caterino/Tishechkin Exosternini Voucher EXO-00388” (CEMT). Paratypes (34): Brazil: Marajó-Breves (-0.8833, -50.5333), 11/18/87–12/5/87, FIT, EXO-02414 (CHND, 1ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1986, FIT (CHND, 4ex.); Pará, Altamira – Marabá: km 18 (-3.15, -52.05), May 1985, FIT, EXO-03310 (CHND, 1ex.); Pará, Barcarena (-1.5, -48.6167), 6/13/91–6/25/91, FIT (CHND, 6ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), November 1984, FIT (CHND, 4ex.); Pará, Belém, Utinga (IPEAN) (-1.45, -48.4333), October, 1985, FIT, EXO-03308 (CHND, 1ex.); Pará, Carajás, Serra Norte (-6.0667, -50.2), 1/22/84–1/27/84, Ss. Cad. de Sarigue (CHND, 2ex.); Pará, Marajó-Breves (-0.8833, -50.5333), 11/18/87–12/5/87, FIT (CHND, 4ex.); Pará, Mcpio Jari, Pacanari (-0.65, -52.6667), 220 m, 3/21/11–4/2/11, Baited pitfalls, C.J. Marsh, EXO-03313 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), 6/19/86–7/7/86, FIT, EXO-03303 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), 6/19/86–7/7/86, FIT, EXO-03305 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), February 1986, FIT, EXO-03304 (CHND, 1ex.); Pará, Tucuruí (-3.75, -49.667), June 1985, FIT (CHND, 3ex.); Pará, Marituba (-1.4, -48.3), 6/10/61, EXO-03315 (CESP, 1ex.).

Map 16.

Collecting records for Phelister chicomendesi (stars), P. microdens (white circles), and P. matatlantica (squares).

Other material

Bolivia: Pando, nr. Villa Bella (-10.3667, -65.3667), 120 m, 2/25/96, pitfall human dung, primary forest, F. Guerra, EXO-03314 (USNM, 1ex.); Suriname: Sipaliwini, upper Palumeu River, CI-RAP Survey Camp 1, 2.4770°N, 55.6294°W, 275 m, flight intercept trap, 10–16.iii.2012, A. E. Z. Short (SEMC, 1ex.).

Diagnostic description

Length: 1.62–1.73 mm (avg. 1.67 mm); width: 1.38–1.42 mm (avg. 1.41 mm). This species is very similar to the preceding, differing principally in the following characters: lateral submarginal pronotal stria obsolete from apical 2/3 or more, present only around anterior angle; outer subhumeral stria present in apical 1/3 to 1/2; 3^rd dorsal stria nearly or fully complete (not abbreviated or scratch-like at base); propygidial punctures slightly smaller, but still dense; pygidial punctures more numerous; prosternal keel striae very fine, often nearly or fully obsolete. Male: S8 with dense, long setal fringe; aedeagus with basal piece broad almost 1/2 length of tegmen; tegmen short, with sides unevenly subparallel in basal 1/2, evenly narrowed to subacute apices, largely straight in lateral view, slightly ventrally curved at apex; medioventral process absent; median lobe ~ 2/3 tegmen length, basal apodemes evenly narrowed.

Etymology

We name this species to honor Francisco Alves (‘Chico’) Mendes Filho, a Brazilian labor and environmental activist who was assassinated in 1988.

Distribution

Most records of this species come from Pará, Brazil, but it is also known form northeastern Bolivia.

Remarks

Among the species in this group, the very short lateral submarginal pronotal stria, the apically present outer subhumeral stria, the complete 3^rd dorsal stria, and the very weak to obsolete prosternal keel striae will distinguish P. chicomendesi. One very disjunct specimen from Bolivia is similar in all these respects, although its protibiae are more quadrate and have more and denser marginal scalloping.

46. Phelister microdens sp. nov.

http://zoobank.org/D377C817-A6B3-41BA-8F76-75C14044274A

Figs 29A, B, 30A, B, Map 16

Type material

Holotype male: “Bolivia: Cochabamba, 67.5 km E Villa Tunari, Est. Biol. Valle Sajta, Univ. San Simon 300 m, 17°06'19"S, 64°46'57"W [-17.1053, -64.7825] 9–13.II.1999, F. Génier, lowland rain for., ex. carr. tp. 3, 99–075” / “Caterino/Tishechkin Exosternini Voucher EXO-00387” (CMNC). Paratypes (9): Bolivia: Cochabamba, Est. Biol. Valle Sajta, 67.5 km E Villa Tunari (-17.1053, -64.7825), 300 m, 2/9/99–2/13/99, carrion trap, lowland rain for., F. Génier, EXO-00387 (CMNC, 1ex.); Santa Cruz, 3.7 km SSE Buena Vista, Flora y Fauna Hotel (-17.4987, -63.6521), 400–440 m, 11/3/03–11/9/03, FIT, R. Leschen, EXO-03332 (AKTC, 1ex.); Santa Cruz, 5 km SSE Buena Vista, Flora y Fauna Hotel (-17.4987, -63.6521), 440 m, 12/15/03–12/24/03, FIT, S. & J. Peck, EXO-02416 (CMNC, 1ex.); Santa Cruz, 5 km SSE Buena Vista, Flora y Fauna Hotel (-17.4987, -63.6521), December 2003, FIT, S & J. Peck (AKTC, 2ex.); Santa Cruz, ~ 5 km SSE Buena Vista, Flora y Faun