Research Article |
Corresponding author: Federico A. Agrain ( fagrain@mendoza-conicet.gov.ar ) Academic editor: Astrid Eben
© 2017 Federico A. Agrain, Maria Lourdes Chamorro, Nora Cabrera, Davide Sassi, Sergio Roig-Juñent.
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:
Agrain FA, Chamorro ML, Cabrera N, Sassi D, Roig-Juñent S (2017) A comprehensive guide to the Argentinian case-bearer beetle fauna (Coleoptera, Chrysomelidae, Camptosomata). ZooKeys 677: 11-88. https://doi.org/10.3897/zookeys.677.10778
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Knowledge of Argentinian Camptosomata has largely remained static for the last 60 years since the last publication by Francisco de Asis Monrós in the 1950’s. One hundred and ninety Camptosomata species (182 Cryptocephalinae and 8 Lamprosomatinae) in 31 genera are recorded herein from Argentina. Illustrated diagnostic keys to the subfamilies, tribes, subtribes and genera of Argentinian Camptosomata, plus species checklists and illustrations for all genera of camptosomatan beetles cited for each political region of Argentina are provided. General notes on the taxonomy and distribution, as well as basic statistics, are also included. This study provides basic information about the Camptosomata fauna in Argentina that will facilitate in the accurate generic-level identification of this group and aid subsequent taxonomic revisions, and phylogenetic, ecological, and biogeographic studies. This information will also facilitate faunistic comparisons between neighboring countries. Two nomenclatural acts are proposed: Temnodachrys (Temnodachrys) argentina (Guérin, 1952), comb. n., and Metallactus bivitticollis (Jacoby, 1907), comb. n. The following are new records for Argentina: Stegnocephala xanthopyga (Suffrian, 1863) and Lamprosoma azureum Germar, 1824. Currently, the most diverse camptosomate tribe in Argentina is Clytrini, with almost twice the number of species of Cryptocephalini. New records for Argentina are predicted.
Argentina, Cryptocephalinae , Distribution, Diversity, Genera, Lamprosomatinae , Provinces, Richness, Taxonomy
In Argentina there are 956 recorded species of Chrysomelidae (excluding Bruchinae) in 258 genera (
The chrysomelid subfamilies Cryptocephalinae and Lamprosomatinae are collectively known as “Camptosomata” or “case-bearers,” due to the peculiar habit of having their eggs, larvae, and pupae living in a fecal protective case (
Lamprosomatinae includes four tribes (
Most of the type specimens of Argentinian Camptosomata are deposited in European institutions: The Natural History Museum, London, United Kingdom (
We studied all catalogs and specialized literature dealing with the genera treated in this contribution. Nomenclature follows previous authors, especially those who made extensive revisions of this group, such as Andrew Moldenke, Francisco Monrós, Jacintho Guérin, and Martin Jacoby. Characters used for identification keys are those used by:
Group | Citation |
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Genera of Fulcidacini |
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Genera and subgenera of Clytrini |
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Subtribes of Cryptocephalini |
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Genera of Cryptocephalina |
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Genera of Pachybrachina |
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We conducted an exhaustive search of all publications citing Argentinian camptosomates. Here we present a checklist of all currently known camptosomate species from Argentina, their distribution, host plant preferences, juvenile data where available, and known predators. Junior synonyms are provided for each species when applicable. The 24 provinces in Argentina (Fig.
Distribution of Camptosomata tribes. A Map showing Argentinian administrative divisions with abbreviation as used in text. Andean and Neotropical regions as indicated in color reference B In black, administrative divisions containing Clytrini species C In black, administrative provinces containing Cryptocephalini species D In black, administrative divisions containing Fulcidacini species E In black, administrative divisions containing Lamprosomatini species.
Terminology follows previous authors as indicated in table 1. The term “egg anal pit” refers to a medioventral excavation on terminal abdominal ventrite, mostly present in the females (
Note: Some of the characters in this key are valid for Neotropical species only
1 | Body dorsally highly convex and ventrally flattened (semicircular in cross-section) (Fig. |
Lamprosoma Kirby (Fig. |
– | Body not highly convex, not flattened ventrally (Fig. |
2. (Cryptocephalinae) |
Cryptocephalinae | ||
2(1) | Intercoxal prosternal process with antennal furrows; body surface usually tuberculate (Fig. |
4 (Fulcidacini) |
2’ | Pronotum and intercoxal prosternal process without antennal furrows (Ischiopachina with furrows on hypomeron); body surface not tuberculate; elytral suture entire | 3 |
3(2) | Antennae short (not surpassing the length of pronotum), serrate; procoxae contiguous (Fig. |
9 (Clytrini) |
3’ | Antennae long (surpassing the length of pronotum, sometimes nearly equal to total body length), filiform, sometimes some segments expanded and flattened; procoxae separated (Fig. |
29 (Cryptocephalini) |
Fulcidacini | ||
4(2) | Intercoxal prosternal process nearly rectangular, with posterior margin slightly narrower than anterior margin; pronotal and elytral tubercles reduced, sometimes with velvet patches |
Melittochlamys Monrós (Fig. |
4’ | Intercoxal prosternal process varying in shape, triangular or angulate between mesocoxae, but never rectangular, with posterior margin much narrower than anterior margin; pronotal and elytral tubercles well developed | 5 |
5(4) | Body equal to or greater than 10 mm long; colour brightly metallic; head with vertex longitudinally impressed; tarsal claws simple |
Fulcidax Voet (Fig. |
5’ | Body less than 10 mm long; head with vertex not impressed; tarsal claws usually appendiculate (except Exema (from simple to appendiculate) | 6 |
6(5) | Pronotum with six distinct, small, sharp, longitudinal carinae converging posteromedially, fan-like; color uniform, generally black |
Aulacochlamys Monrós (Fig. |
6’ | Pronotum with or without tubercles, but never with six longitudinal, fan-like carinae | 7 |
7(6) | Head not completely retracted into the prothorax; mandibles in males larger than in females; intercoxal prosternal process strongly and abruptly constricted behind anterior margin; prosternal process more than 3/4 as long as intercoxal prosternal process (Fig. |
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7’ | Head completely retracted into prothorax; mandibles in males as large as in females; intercoxal prosternal process gradually constricted at about 2/3 of its length (Fig. |
8 |
8(7) | Males without spines or spinulae on ventrite I; antennomere V nearly as long as VI; elytral suture crenulation usually incomplete (i.e., suture entire immediately following scutellum) |
Chlamisus Rafinesque (Fig. |
8’ | Males with spines or spinulae on ventrite I; antennomere V much shorter than VI; elytral suture crenulation always complete |
Exema Lacordaire (Fig. |
Clytrini | ||
9(3) | Prothorax with lateral antennal grooves on hypomeron Ischiopachina Chapuis (Monotypic subtribe). Elytra without strong parallel longitudinal carinae; color metallic |
Ischiopachys Chevrolat (Fig. |
9’ | Prothorax without lateral antennal grooves on edge of hypomeron | 10 |
10(9) | Tarsal claws simple | 12 (Megalostomina Chapuis) |
10’ | Tarsal claws bifid or appendiculate (Fig. |
11 |
11(10) | Scutellum flat, in the same horizontal plane as elytra; elytra without longitudinal carinae, frons distinct | 15 (Babiina Chapuis) |
11’ | Scutellum raised above elytral plane; elytra with strong parallel, longitudinal carinae; frons very narrow Arateina Moldenke; (monogeneric subtribe) |
Aratea Lacordaire (Fig. |
12(10) | Eyes entire or only slightly emarginate | 13 |
12’ | Eyes strongly emarginate |
Megalostomis Chevrolat (Fig. |
13(12) | Scutellum foveate; body not metallic; pygidium with transverse subapical carina; aedeagus occupying entire abdominal length |
Euryscopa (Coleomonrosa) Moldenke (Fig. |
13’. | Scutellum not foveate; body brilliant metallic, or with noticeable metallic reflections; pygidium without subapical transverse carina; aedeagus smaller, not occupying entire abdominal length | 14 |
14(13) | Eyes elongate, not protruding; body robust, subquadrate |
Themesia Lacordaire (Fig. |
14’ | Eyes round and protruding; body elongate |
Coscinoptera Lacordaire (Fig. |
15(11) | Tarsal claws bifid; dorsum of body uniformly metallic; body lengthened |
Helioscopa Gistel (Fig. |
15’ | Tarsal claws appendiculate; dorsum of body not uniformly metallic; body compact | 16 |
16(15) | Epipleural lobes very pronounced;angle of epipleural lobes rounded; elytra striae strongly impressed; dorsal coloration black, with omnipresent metallic bronze reflections |
Saxinis (Saxinis) Lacordaire (Fig. |
16’ | Epipleural lobes weakly developed, not angulate, no more than two striae wide; elytra striae not strongly impressed; dorsal coloration without bronze reflections | 17 |
17(16) | Pygidium with transverse subapical angle, evenly bent perpendicular to longitudinal axis of body; epipleural lobe not well developed in lateral view | 18 |
17’ | Pygidium flat, surface slightly convex, with tip sometimes bent; epipleural lobe distinctly rounded in lateral view | 23 |
18(17) | Eyes feebly emarginate, distinctly projecting, conspicuously protruding at sides of head |
Dinophthalma Lacordaire (Fig. |
18’ | Eyes distinctly emarginate, not markedly projecting | 19 |
19(18) | Anterior margin of pronotum arcuate, entirely covering head from dorsal view; body shape elongate, cylindrical and flat; size large, greater than 10 mm long; frons flat; lateral margins of prothorax not widely explanate |
Babia (Coleolacordairei) Moldenke (Fig. |
19’ | Anterior margin of pronotum transverse or arcuate, but not concealing entire head from dorsal view | 20 |
20(19) | Body shape strongly cylindrical, elongate, not flattened; elytra not fully covering pygidium; elytral punctation barely noticeable |
Cylindrodachrys Monrós (Fig. |
20’ | Body shape not cylindrical or elongate; elytra fully covering pygidium; elytral punctation evident | 21 |
21(20) | Frons strongly tapering, triangular, without transverse sulcus; body shape subquadrate; aedeagus with strong dorsal and ventral tufts of pubescence |
Pnesthes Lacordaire (Fig. |
21’ | Frons not strongly tapering below eyes, subrectangular, with length only slightly greater than width; aedeagus without pronounced ventral and dorsal patches of setae, with only a few dorsal setae present |
22. Temnodachrys Monrós (Fig. |
22(21) | Frons with deep transverse sulcus (Fig. |
Temnodachrys (Temnodachrys) Monrós |
22’ | Frons without deep transverse sulcus; body guttiform or minute and with subparallel sides | Temnodachrys (Eudachrys) Monrós |
23(17) | Body shape subcircular in outline; legs with longitudinal carinae; anterior pronotal margin strongly explanate and completely concealing head from dorsal view | 24 |
23’ | Body shape subrectangular, sides subparallel; legs without longitudinal carinae; anterior margin of pronotum never concealing all of head in dorsal view | 27 |
24(23) | Forelegs longer (especially in males) than mid- and hind legs; tarsomere III enlarged, shallowly excavated; head less reflexed, 90º with respect to prosternum (Fig. |
Stereoma Lacordaire (Fig. |
24’ | All legs with similar development; tarsomere III narrow, deeply excavated; head more reflexed, forming 45º angle with respect to prosternum (Fig. |
25. Urodera Lacordaire (Fig. |
25(24) | Posterior margin of pronotum broadly expanded, forming distinct scutellar lobe with angular corners (Fig. |
Urodera (Austrurodera) Moldenke |
25’ | Posterior margin of pronotum not broadly expanded and not forming a scutellar lobe with angular corners | 26 |
26(25) | Front tibiae with indistinct posterolateral carinae, with surface not deeply excavate and reflective between carinae; frons of male with three shallow depressions | Urodera (Urodera) Lacordaire |
26’ | Front tibiae with strong posterolateral carinae, with surface deeply excavate and reflective between carinae; frons of male with deep medial depression | Urodera (Stereomoides) Moldenke |
27(23) | Pronotum with weak metallic green reflections; antennomere IV much smaller than V; frons wide, with width greater than or subequal to length; frons without medial pit |
28. Paraurodera Moldenke. (Fig. |
27’ | Pronotum without metallic reflections; antennomere IV subequal in size to V; frons narrow, with length more than twice width; frons with deep medial pit |
Dachrys Erichson (Fig. |
28(27) | Anterior margin of pronotum transverse, not concealing head at all in dorsal view; frons with submedial depressions; sexual dimorphism of frons extreme, the male having extremely wide frons and elongate mandibles | Paraurodera (Torourodera) Moldenke |
28’ | Anterior margin of pronotum explanate and partially concealing head; frons with medial and two submedial depressions; sexual dimorphism reduced, with frons and mandibles similarly developed in male and female | Paraurodera (Paraurodera) Moldenke |
Cryptocephalini | ||
29(3) | Claws simple or, if appendiculate, intercoxal prosternal process longer than wide to subquadrate | 30 |
29’ | Claws appendiculate, each with broad, basal tooth; intercoxal prosternal process wider than long | 31. Monachulina Leng |
30(29) | Pronotum margined at base (except in Mylassa), not crenulate (Fig. |
32 (Pachybrachina Chapuis) |
30’ | Pronotum not margined at base, usually crenulate (Fig. |
Cryptocephalus Geoffroy (Fig. |
31(29) | Anterior margin of pronotum simple, arcuate; pronotal punctures distinct throughout; intercoxal prosternal process bilobed, with small lateral projections; anterior margin of prosternum uniformly concave; pronotal anterior opening circular |
Lexiphanes Gistel (Fig. |
31’ | Anterior margin of pronotum produced; pronotal punctures absent; intercoxal prosternal process truncate; anterior margin of prosternum with one or two medial flanges; pronotal anterior opening ventrally widened |
Stegnocephala Baly (Fig. |
32(30) | Eyes small, bulging, with canthus shallow | 33 |
32’ | Eyes large, extending dorsad beyond upper third of head, usually with upper half of eye larger than ventral half; canthus deep, extending approximately 1/4 distance into eye; posterior margin of pronotum (directly opposite scutellum) not produced posteriorly, margined with basal row of punctures, bi-sinuate; scutellum not heart-shaped | 34 |
33(32) | Dorsal surface generally setose; pronotum greatly vaulted, with lateral margins narrow; pronotum medially lobed posteriorly, lobe elevated and truncate; scutellum heart-shaped |
Mylassa Stål (Fig. |
33’ | Dorsal surface glabrous; pronotum regularly convex, with lateral margins prominent, visible from above, with posterior margin regularly biconcave, with mesobasal region regularly rounded and slightly produced posterad; scutellum with posterior margin truncate | Ambrotodes Suffrian (Although this genus has not been yet reported from Argentina, we include it in this key because its species are common along the eastern border of the Andes in Chile. |
34(32) | Posterior margin of intercoxal prosternal process convex, produced beyond posterior margin of prothorax; mesotibial spurs present or absent; body robust; punctures not deep or large, particularly on pronotum; dorsal surface shiny | 35 |
34’ | Posterior margin of intercoxal prosternal process straight, rarely produced beyond posterior margin of prothorax; gestalt cylindrical (height of each elytron approximately 2.5 width), pronotum narrower than elytral bases combined, overall flattened not vaulted; punctures on head, prothorax and elytra evident, large; elytral punctation commonly confused (but punctation in rows not uncommon); forefemora enlarged or not; each mesotibia usually with terminal spur in both sexes |
Pachybrachis Chevrolat (Fig. |
35(34) | Posterior margin of intercoxal prosternal process rounded; lateral margin of elytra deeply excised, exposing abdomen caudally; elytra length approximately 2× or less length of pronotum |
Griburius Haldeman (Fig. |
35’ | Posterior margin of intercoxal prosternal process gradually narrowing, pointed; lateral edge of elytra not deeply excised; abdomen not exposed; elytral length greater than 2× length of pronotum |
Metallactus Suffrian (Fig. |
Diagnostic characters plate 1. A Body dorsally highly convex and ventrally flattened (semicircular in cross-section (drawn after Monrós 1956) B Distal margin of last ventrite thick (drawn after
Diagnostic characters plate 2. A Tarsal claws bifid or appendiculate B Frons with deep transverse sulcus. C Head forming straight angle with respect to pronotum D Head strongly directed downward, forming 45º angle with respect to pronotum E Posterior margin of pronotum broadly expanded, forming distinct scutellar lobe with angular corners (drawn after
Adults: Body cylindrical, or rarely as long as wide; in dorsal view parallel-sided with prothorax mostly as wide as combined elytral bases; rarely body rounded; multicolored and patterned, particularly Cryptocephalini, black with red humeri commonly in Clytrini, brown, black, straw-yellow and some with velvet spots in Fulcidacini, glabrous to pubescent, particularly Clytrini. Head retracted into prothorax up to frons or almost completely, with compound eyes completely to barely visible from above. Compound eyes entire, level to strongly protuberant; canthus weak to deep. Antennae 11-segmented, longer than pronotum and filiform in Cryptocephalini (sometimes antennomeres distally dilated and flattened), shorter than pronotum and dentate in Clytrini, clavate in Fulcidacini. Pronotum about 0.75–1.0 times as long as wide, widest basally; sides slightly rounded or sinuate; base slightly narrower or as wide as combined elytral bases. Prosternum in front of coxae usually narrow and shorter than shortest diameter of a single coxal cavity, flat to moderately convex, sometimes produced to conceal mouthparts. Prosternal process complete, usually parallel-sided; notosternal sutures distinct. Procoxae not projecting below prosternum, without concealed lateral extensions; trochantins exposed within coxal cavity. Stridulatory device present on concealed part of mesoscutellum. Tarsi 5-5-5 in both sexes; penultimate tarsomere reduced and antepenultimate bilobed, all usually wider in males; tarsomere III densely clothed beneath with adhesive microtrichia; pretarsal claws simple to deeply bifid. Abdomen with five free ventrites and six tergites. Ventrite I more than twice as long as II, usually longer than ventrites II-IV combined, without postcoxal lines; intercoxal process narrowly rounded to almost truncate. Functional spiracles present on tergites I-VI. Tergite VI forming strongly pigmented pygidium, always exposed; anterior edge of sternite VIII in male without median strut. Ventrite V (=sternite VII) in females with variably-sized apical fovea. Males with segment IX membranous and spiculum gastrale Y-shaped. Aedeagus of cucujiform type; tegmen Y-shaped; struts (remnants of tergite IX) either present or absent; penis flattened to rounded, slightly to strongly curved apically; apically and/or laterally usually with tufts of setae. Sternite VIII in female lacking spiculum ventrale. Ovipositor short, rigid and oval with distinct proctigeral, paraproctal, and coxital baculi; paraprocts deltoid, slightly shorter than undivided coxites, sclerotized or less pigmented proximally, flattened, digitate lobes of variable form, apically setose; styli absent. Spermatheca strongly to moderately sclerotized, variably shaped, usually J-, C-, or S-shaped. Rectal sclerites (rectal apparatus) present in female.
Larvae: J-shaped, generally protected by a case. According to
Diagnosis. Same as for genus, see below.
This genus is easily recognized by the presence of strong parallel carinae on the elytra; other diagnostic characters include: frons very narrow; scutellum slanting posterodorsally, distinctly protruding from the plane of elytra; intercoxal prosternal process nearly absent between fore coxae; epipleural margin broadly angled, tip rounded; elytra without pubescence; frons with medial pit, densely and coarsely punctate throughout; and pygidium strongly convex.
Only two species from Brazil, one present in Argentina, likely to also occur in Paraguay.
1. Aratea costata Lacordaire, 1848 (FOR, MNS, SEO).
Babia
Chevrolat in
= Harpasta Gistel, 1848: 123.
This subgenus can be reliably diagnosed by the shape of anterior margin of pronotum, which is arcuate, and covers the entire head in dorsal view. Also, body shape is elongate (length 3x width), cylindrical and flat; frons is flat; lateral margin of prothorax not widely explanate.
Brazil and Argentina.
1. Babia (Coleolacordairei) elongata Guérin, 1945 (BAS, COR, ERS, JUY, LRA, RNO, SAL, SFE, TUC). Host plant: Fabaceae: Acacia sp. (
This genus exhibits a particular combination of three characters unique among Clytrini: adult body shape strongly cylindrically elongate; elytra not fully covering pygidium; and inconspicuous elytral punctations, thus superficially resembling a clerid.
This monotypic genus is limited to Paraguay and north and central Argentina.
According to
Cylindrodachrys cleroides Monrós, 1944 (CAT, COR, MZA, SEO, SLS). Host plant: Solanaceae: Solanum eleagnifolia (Quillo); Malvaceae: Gossypium hirsutum (Monrós, 1953a).
This genus resembles Saxinis, but is distinguished by the epipleural lobe not well developed and from Temnodachrys by the sides of the prothorax curved (strongly convergent towards the head); frons with deep medial pit; and distinct elytral pattern with transverse black bands on reddish base color.
Austral region of Chile and Argentina.
Dachrys succincta (Erichson, 1834) (CHU, NQN, RNO). Host plant: Rhamnaceae: Discaria sp. (Monrós, 1953a) and Chacaya trimereus (Roig-Juñent, 2004).
= Clythra succincta Erichson, 1834.
= Dachrys succincta Lacordaire, 1848.
Dinophthalma
Small body size (less than 7 mm). This genus is very similar to Temnodachrys, from which it can be easily separated by the extraordinary development of the eyes, which are protruding and reaching the lateral margins of the head. Also, antennae with antennomere III large, conical; pronotum transverse; elytra without callus.
Brazil, Ecuador, Bolivia, Paraguay, and Argentina.
Dinophthalma amplicollis Monrós, 1953 (MNS).
Dinophthalma discicollis consimilis Baly, 1877a (FOR, MNS).
= Dinophthalma consimilis Baly, 1877a.
= Babia pallidipennis Guérin, 1943.
Helioscopa
= Acidalia Chevrolat, 1836
= Tellena Lacordaire, 1848
= Tellenina Monrós, 1953a.
body elongate, brilliant metallic, uniform green/blue coloration; and bifid tarsal claws. Also, antennae serrated from IV antennomere; pronotal margin slightly marginate; scutellum long, triangular, with round apex; legs long, with long tarsi, last tarsomere surpassing ½ the lobes of tarsomere III.
Southern Brazil, Argentina and Paraguay. Only two subspecies of this genus have been cited in Argentina.
1a. Helioscopa varians varians (Sahlberg, 1823) (MNS).
= Clythra varians Sahlberg, 1823.
= Tellena varians Lacordaire, 1848.
1b. Helioscopa varians angusticollis (Jacoby, 1897) (CHA, COR, JUY, MNS, SEO, TUC). Host plant: Boraginaceae: Cordia salviflora, Argentina / Monrós, (1953a).
= Tellena angusticollis Jacoby, 1897.
Paraurodera
Paraurodera similis Moldenke, 1981, by original designation.
According to
Argentina, Brazil, Colombia, and Uruguay.
Paraurodera (Paraurodera) bergi (Harold, 1875) (CHA, COR, CTS, LRA, MNS, MZA, SEO, SFE). Host plant: Fabaceae: Acacia caven (Mol.) Mol. (
= Stereoma bergi Clavareau, 1913.
Paraurodera (Paraurodera) hamatifera densepunctata Monrós, 1953a (CHA, COR, FOR, JUY, MNS, SAL).
Paraurodera (Paraurodera) hamatifera hamatifera (Lacordaire, 1848) (CHA, COR, CTS, ERS, FOR, LRA, MNS, MZA, SAL, SEO, SFE, SJN, SLS, TUC). Host plant: Fabaceae: Prosopis sp. (Monrós, 1953a), Prosopis nigra (
Paraurodera (Paraurodera) inornata (Monrós, 1953a) (CHA).
Paraurodera (Paraurodera) similis Moldenke, 1981 (JUY, SAL, FOR, CHA, MNS, SEO, TUC, CTS, COR, CAT, SFE, BAS, MZA). Host plant: Zygophyllaceae: Zucagnia punctata flowers (Roig-Juñent, 2004).
= Urodera vau Monrós, 1953a (nec Lacordaire, 1848).
Urodera fallax Harold, 1875, designated subsequently by
Anterior margin of pronotum not explanate; male head very conspicuous; frons with very strong sexual dimorphism, male mandibles prominent; antennomere IV much smaller than V; hind pronotal angles obtuse.
This subgenus is endemic to Argentina.
Paraurodera (Torourodera) duplicata (Monrós, 1953a) (CAT, CHA, COR, CTS, FOR, MNS, SEO, SFE, SLS). Host plant: Fabaceae: Prosopis sp. and P. rucifolia (
Paraurodera (Torourodera) fallaciosa (Monrós, 1953a) (COR, CTS, SFE, SLS).
Paraurodera (Torourodera) fallax (Harold, 1875) (BAS, CAT, CHA, COR, CTS, ERS, FOR, JUY, MNS, MZA, SAL, SEO, SFE, TUC). Host plants: Fabaceae: Sesbania punicea, and S. virgata (Monrós, 1953a); Prosopis caldenia (Aravena, 1940; 1974).
The most particular character to diagnose this genus is the shape of the head, which is anteriorly prolonged, strongly tapering and triangular. Other diagnostic characters are: elongate body, shiny and glabrous; eyes moderately salient; pronotal base lobate; scutellum long and,triangular.
Two species from Brazil, one of these with a subspecies in Northeastern Argentina which was separated from the typical form by
Pnesthes instabilis minuta Monrós, 1953a (MNS, SFE).
Stereoma
Sexually dimorphic, with males having enlarged forelegs; head completely concealed within prothorax; mesosternum broad; tarsal segments very transverse, tarsomere III cleft 1/2 length to receive IV; tarsomere IV notoriously short and thick; frons with prominent transverse sulcation; lateral margin of pronotum broadly explanate, hind angles broadly rounded. This genus is closely related to Urodera, from which it can be separated by the conspicuous development of the legs, since the latter is much larger in males and females compared to Urodera.
Seven species and four subspecies are known from Argentina, another 10 species are known from Meridional America (southern part of South America).
Sesbania virgata (Fabaceae) has been cited as a hostplant for Stereoma sp. in Argentina (
Stereoma anchoralis Lacordaire, 1848 (COR).
Stereoma angularis Lacordaire, 1848 (MNS).
3a. Stereoma clitellata burmeisteri Harold, 1875 (CHA, COR, FOR, JUY, LRA, MNS, SAL, SEO, SFE, TUC).
= Stereoma burmeisteri Harold, 1875.
3b. Stereoma clitellata clitellata Lacordaire, 1848 (CHA, CTS, FOR, MNS, SFE). Host plant: Fabaceae: Acacia decurrens (Monrós, 1953a).
3c. Stereoma clitellata concolor Lacordaire, 1848 (JUY, SAL, SEO).
= Stereoma concolor Lacordaire, 1848.
4a. Stereoma laevicollis bosqui Monrós, 1953a (SFE).
4b. Stereoma laevicollis laevicollis (Harold, 1875) (CAT, CHA, FOR, JUY, LRA, SAL, SEO, SLS). Host plant: Fabaceae: Cassia aphylla (Viana & Williner, 1974).
= Urodera laevicollis Harold, 1875.
4c. Stereoma laevicollis orophila Monrós, 1953a (JUY, SAL, TUC).
5. Stereoma obesa Monrós, 1953a (SEO).
6. Stereoma seenoi Moldenke, 1981 (JUY). [
Saxinis
This group can be easily distinguished from all other members of this subtribe by the very large and generally pointed epipleurae. South American species exhibit a black dorsal coloration always with metallic bronze reflections.
Usually foundin Central and South America.
Saxinis (Saxinis) meridionalis Monrós, 1953a (BAS, CHA, COR, ERS, FOR, JUY, LPA, LRA, MZA, SAL, TUC).
Dachrys Lacordaire, 1848 (part)
Temnodachrys
Temnodachrys cruciata (Lacordaire, 1848), designated by
Frons without deep transverse sulcus; body minute, drop-like shaped with sides subparallel.
This subgenus has over 60 species and is distributed from Mexico to Argentina and Chile, 22 species have been cited for Argentina.
1a. Temnodachrys (Eudachrys) complexa complexa (Lacordaire, 1848) (BAS, CHA, CTS, ERS, MNS, SEO, SFE, TUC). Host plant: Rosaceae: Rosa sp. (Roses) (
1b. Temnodachrys (Eudachrys) complexa pallipes Monrós, 1953a (BAS, CTS, FOR, MNS, SFE).
Temnodachrys (Eudachrys) cruciata (Lacordaire, 1848) (BAS, COR, MNS, MZA, SEO, SFE). Host plant: Asteraceae: Eryngium sp. (Monrós, 1953a).
Temnodachrys (Eudachrys) decolorata Monrós, 1953a (SEO).
Temnodachrys (Eudachrys) haywardi Monrós, 1953a (NQN).
Temnodachrys (Eudachrys) impressifrons Monrós, 1953a (SFE).
Temnodachrys (Eudachrys) lacordairei Monrós, 1953a (JUY, SAL).
Temnodachrys (Eudachrys) laeta (Lacordaire, 1848) (JUY, MNS).
Temnodachrys (Eudachrys) longipennis (Guérin, 1943) (FOR, MZA).
Temnodachrys (Eudachrys) manca (Harold, 1875) (COR, MZA, SEO).
= Urodera manca Clavareau, 1913.
Temnodachrys (Eudachrys) monticola Monrós, 1953a (TUC).
Temnodachrys (Eudachrys) oyaguava Monrós, 1953a (COR, MNS).
Temnodachrys (Eudachrys) punctipennis (Monrós, 1951b) (MNS).
Temnodachrys (Eudachrys) puntana Monrós, 1953a (COR, MZA, SLS). Host plant: Fabaceae: Cercidium praecox (Ruiz & Pavon ex Hook.) Harms; (
Temnodachrys (Eudachrys) pygmaea Monrós, 1953a (JUY).
Temnodachrys (Eudachrys) sympathica Monrós, 1953a (CHA, COR, SEO).
Temnodachrys (Eudachrys) taeniatoides Monrós, 1953a (MNS).
Temnodachrys (Eudachrys) trisignata (Lacordaire, 1848) (COR, JUY, SEO, TUC).
Temnodachrys (Eudachrys) trivirgata (Lacordaire, 1848) (CAT, SAL). Host plant: Astaeraceae (
Temnodachrys (Eudachrys) vianai Monrós, 1953a (MNS).
Temnodachrys (Eudachrys) willinki Monrós, 1953a (CHA, COR, FOR, MNS, MZA, SAL, SEO, SFE, TUC). Host plant: Fabaceae: Prosopis sp. (Monrós, 1953a).
Temnodachrys (Eudachrys) wygodzinskyi Monrós, 1953a (JUY).
Temnodachrys (Eudachrys) xerophila Monrós, 1953a (FOR, SEO, LRA, COR, SLS). Host plant: Solanaceae: Solanum eleagnifolia Cav. (Quillo) (Monrós, 1953a).
Temnodachrys aeneofasciata (Lacordaire, 1848), designated by
Frons with deep transverse sulcus; body shape subrectangular.
Seven species, from northern Brazil (one species) to central Argentina (six species).
The characters mentioned by
Temnodachrys (Temnodachrys) argentina (Guérin, 1952), comb n. (JUY).
= Dachrys argentina Guérin, 1952.
Temnodachrys (Temnodachrys) aeneofasciata (Lacordaire, 1848) (BAS, CHA, COR, CTS, ERS, FOR, JUY, LPA, MNS, MZA, NQN, SAL, SEO, SFE, TUC). Host plant: Fabaceae: Sesbania marginata, Sesbania virgata, and Prosopis algarrobilla (
= Dachrys gracilis Harold, 1875.
= Dachrys aeneofasciata Lacordaire, 1848.
Temnodachrys (Temnodachrys) aphodiodes (Lacordaire, 1848) (BAS, COR, ERS, LPA, MNS, SFE). Host plant: Fabaceae: Mimosa farinosa (
Temnodachrys (Temnodachrys) hybrida Monrós, 1953a (ERS).
Temnodachrys (Temnodachrys) neffi Moldenke, 1981 (CAT). Host plant: Fabaceae: Prosopis torquata (Cavanilles ex Lagasca) D.C., Prosopis chilensis (Molina) Stuntz emend.; Mimosa farinose Griseb, Mimosa ephedroides (Gillies ex Hook. & Arn.) Benth.
Temnodachrys (Temnodachrys) pauperrima Monrós, 1953a (JUY, SAL, CHA, LRA).
Temnodachrys (Temnodachrys) quichua Monrós, 1953a (JUY, SAL).
Temnodachrys (Temnodachrys) signatipennis (Lacordaire, 1848) (JUY, SAL, FOR, MNS, TUC, SEO, CAT, COR, LRA, CTS, SFE, SLS, BAS). Host plants: Fabaceae: Acacia caven (Mol.) Mol. (
Urodera
Urodera quadrisignata Lacordaire, 1848, designated by
Posterior margin of pronotum broadly expanded, forming distinct scutellar lobe usually bounded by acute angles; scutellum posteriad humeral callus, scutellum nearly as long as length of posterior lobe of pronotum; aedeagus with broad weakly-sclerotized dorsal medial flap.
Argentina, Brazil, Colombia, Costa Rica, Guatemala, Panama, Paraguay, and Venezuela.
1a. Urodera (Austrurodera) circumcincta circumcincta Lacordaire, 1848 (MNS, CTS, CHA, JUY).
1b. Urodera (Austrurodera) circumcincta circumducta Lacordaire, 1848 (MNS, CTS, CHA).
= Urodera circumducta Lacordaire, 1848
2. Urodera (Austrurodera) monrosi Moldenke, 1981 (MNS).
Stereoma tetraspilota Lacordaire, 1848, designated by
Scutellum length 1.5x or more than length of posterior lobe of pronotum; frons of male with deep medial depression; dorsal region of aedeagus with very prominent row of setae, no cleft, ventral lobe absent, apex of aedeagus extraordinarily truncate.
Argentina, Bolivia, Brazil, Paraguay, and Peru.
Urodera (Stereomoides) neffi Moldenke, 1981 (CAT). Host plant: Asteraceae: Baccharis sp.
Urodera (Stereomoides) tetraspilota (Lacordaire, 1848) (MNS, SAL).
= Stereoma tetraspilota Lacordaire, 1848.
1. Urodera lanuginosa Monrós, 1953a (SEO, SFE).
2. Urodera crucifera crucifera Lacordaire, 1848 (sensu Monrós) (JUY, SAL, TUC).
= Urodera hoepfneri Lacordaire, 1848.
= Urodera chevrolati Lacordaire, 1848.
As mentioned above, further studies are necessary to clarify the relationships of Arateina and Ischiopachina with the remaining subtribes.
Ischiopachys
Chevrolat in
This genus has several diagnostic characters that clearly separate it from all other Neotropical Clytrini: scutellum inclined posterodorsally, distinctly protruding from the plane of elytra; intercoxal prosternal process nearly absent between fore coxae; epipleural margin broadly angled, tip rounded; elytra without pubescence; frons with medial pit, densely and coarsely punctate throughout; pygidium strongly convex; pronotum with lateral margins sulcate to receive antennae in repose; dorsum brilliant metallic.
From Mexico to Argentina.
1a. Ischiopachys cribipennis cribipennis Lacordaire, 1848 (CTS). Host plant: Sfolocalyx? and curupatí (Monrós, 1953a).
1b. Ischiopachys cribipennis micans Lacordaire, 1848 (CHA, CTS, ERS, FOR, JUY, MNS, SAL, SEO, SFE, TUC). Host plants: Fabaceae: Prosopis sp.; Piptadenia sp.; Caesalpinia sp.sp. (Monrós, 1953a). Rutaceae: Citrus sp. (Naranjo) (Monrós, 1953a).
Ischiopachys micans Lacordaire, 1848.
2. Ischiopachys empyrea empyrea Lacordaire, 1848 (TUC, SAL).
= Ischiopachys empyrea smaragdina Monrós, 1953a.
Major classification changes in Megalostomina were implemented based on the development of sexual dimorphic characters, especially as they relate to head modifications in males (
Coscinoptera
This genus can be separated from Euryscopa by the lack of bilobed lacinia and the elytra with confused punctation, in some cases exceedingly coarsely and deeply punctate. Other useful diagnostic characters are: head moderately prominent, covered with dense fine punctation and silky pubescence; male head as long as wide; eyes round and salient; prothorax transverse, pronotal disc as high as long; scutellum often coarsely punctate and always with dense white pubescent; elytra either metallic unicolored and glabrous or black; ventrites usually covered with exceedingly dense white pubescence; female anal pit normally small and only moderately depressed.
USA to Argentina.
As for other groups within Clytrini, it is in need of modern taxonomic revision. Several species groups have been proposed, but their monophyly has not yet been tested.
1. Coscinopteraalbopilosa (Monrós, 1953a) (BAS, CHA, COR, ERS, MNS, SEO, SFE). Host plant: Asteraceae: Baccharis sp. (branches). Zygofilaceae: on flowers (Monrós, 1947).
= Euryscopa scapularis Guérin, 1945; nec Lacordaire, 1848.
Euryscopa albopilosa Monrós, 1953a.
Coleorozena albopilosa Moldenke, 1981.
2. Coscinopteraargentina Burmeister, 1877 (COR, ERS, SEO).
Euroscopa (Coleoguerina) argentina: Moldenke, 1981 (misspelled for Euryscopa).
3. Coscinoptera atypica Monrós, 1953a (MNS).
Euroscopa (Coleoguerina) atypica: Moldenke, 1981 (misspelled for Euryscopa).
4. Coscinoptera denieri Monrós, 1953a (CHA, FOR).
Euroscopa (Coleoguerina) denieri: Moldenke, 1981 (misspelled for Euryscopa).
5. Coscinopteradubia Guérin, 1949 (COR, MZA, SEO).
= Coscinopteraargentina Guérin, 1944, not Burmeister, 1877.
Euroscopa (Coleoguerina) dubia: Moldenke, 1981 (misspelled for Euryscopa).
6. Coscinoptera euryscopoides Monrós, 1953a (SAL, SEO).
7. Coscinopteraguerini (Monrós, 1953a) (CHA, CTS, FOR, MNS).
Coleorozena guerini: Moldenke, 1981.
Euryscopa guerini Monrós, 1953a.
8. Coscinoptera humeralis Monrós, 1953a (CAT, CHA, COR, MZA, SAL) Host plant: Fabaceae: Prosopis sp. (Roig-Juñent, 2004).
Euroscopa (Coleoguerina) humeralis: Moldenke, 1981 (misspelled for Euryscopa).
9. Coscinoptera nigerrima Guérin, 1945 (COR, SEO).
Euroscopa (Coleoguerina) nigerrima: Moldenke, 1981 (misspelled for Euryscopa).
10. Coscinopteraobliqua Lacordaire, 1848 (CTS).
obliqua Lacordaire, 1848 (incertae sedis in Moldenke, 1981).
10. Coscinopteraterebellum Lacordaire, 1848 (CTS, MNS).
Euryscopa terebellum: Monrós, 1953a.
11. Coscinoptera tibialis Harold, 1875 (CHA, COR, ERS, FOR, MZA, SALTUC, SEO). Host plant: Fabaceae: Acacia caven (Mol.) Mol. (Monrós, 1953a).
Euryscopa
Lacordaire, 1848: 493–494;
Size greater than 7mm; robust, widest at humeral angle; scutellum foveate; aedeagus occupying entire abdominal length, distinctly straight; body not metallic, eyes weakly emarginate; antennomere IV smaller than V; elytral punctation seriate or sub-seriate, without pubescence; pygidium with transverse subapical carina.
Argentina, Brazil, Colombia, Costa Rica, French Guiana, Mexico, Peru, Suriname, and Venezuela.
1. Euryscopa (Coleomonrosa) haematoptera Lacordaire, 1848 (MNS).
Euryscopa haematoptera Lacordaire, 1848.
Euryscopa (Coleomonrosa) haematoptera: Moldenke, 1981.
2. Euryscopa (Coleomonrosa) scapularis
Baccharis sp. (
Euryscopa scapularis (
Euryscopa (Coleomonrosa) scapularis: Moldenke, 1981.
Megalostomis
Megalostomis (Megalostomis)
=Megalostomis (Minturnia)
=Megalostomis (Heterostomis)
=Megalostomis (Scaphigenia)
=Megalostomis (Pygidiocarina)
=Megalostomis (Coleobyersa)
=Megalostomis (Snellingia)
Among the species of Megalostomis, several morphological differences exist and the head and thorax are highly variable, therefore, the most useful morphological characters are: presence of a carina in the inter-ocular area, development of anterior teeth on the mandibles, clypeus sculpture, and the degree of retraction of the head inside the prothorax. The thorax may have strong constrictions, which are often present in those species showing great development of the head and mouthparts. The elytra are also variable; the most distinctive characters are the coloration pattern and the ordering of the elytral punctation. Although also variable, the abdomen and legs are not especially useful for the recognition of species groups. The pygidium may possess distinct sculpture patterns, which are useful to diagnose among species.
Megalostomis distribution includes North, Central and South America, especially diverse in xeric temperate or subtropical zones.
This genus was revised by
1. Megalostomis analis (Forsberg, 1821) (COR, CTS, FOR, MNS, SEO).
= Clythra analis Forsberg, 1821.
= Clythra bicincta Germar, 1824.
= Megalostomis bicincta
Megalostomis (Heterostomis) analis: Lacordaire, 1848.
= Megalostomis (Heterostomis) analis var seminigra Achard, 1926.
= Megalostomis (Heterostomis) analis var lateralis Achard, 1926.
2. Megalostomis consimilis Achard, 1926 (CAT, CHA, COR, CTS, FOR, JUY, LRA, MZA, SAL, SEO, SLS, TUC). Host plants: Fabaceae: Prosopis algarrobilla (
Megalostomis (Scaphigenia) consimilis:
= Megalostomis (Scaphigenia) cornuta Monrós, 1945 (nec Lacordaire, 1848).
Megalostomis (Scaphigenia) cornuta consimilis:
3. Megalostomis cornuta Lacordaire, 1848 (COR, SAL, SEO).
= Megalostomis cornuta Dejean, 1836 (nomen nudum).
Megalostomis (Scaphigenia) cornuta Lacordaire, 1848.
= Megalostomis (Scaphigenia) cornuta var. baeri Achard, 1926.
= Megalostomis (Scaphigenia) cornuta var. obliterate
= Megalostomis (Scaphigenia) cornuta var. divisa Guérin, 1949.
4. Megalostomis gazella Lacordaire, 1848 (CAT, CHA, COR, CTS, ERS, FOR, JUY, LPA, LRA, MNS, MZA, SAL, SEO, SFE, SJN, SLS, TUC). Host plants: Fabaceae: Prosopis sp.; Acacia sp. (
Megalostomis (Scaphigenia) gazella Lacordaire, 1848.
= Megalostomis (Scaphigenia) gazella var. clavapex Achard, 1926.
= Megalostomis (Scaphigenia) gazella var. flavapex: Monrós, 1953a (misspelling pro clavapex).
= Megalostomis (Scaphigenia) gazella var. nigrapex Achard, 1926.
= Megalostomis (Scaphigenia) gazella var. nigrescens Achard, 1926.
= Megalostomis meretrix Lacordaire, 1848.
= Megalostomis bicingulata Lacordaire, 1848.
5. Megalostomis grossa (Forsberg, 1821) (COR, CTS, FOR, JUY, MNS) .
= Clythra grossa Forsberg, 1821.
= Clythra boopis Germar, 1824.
= Megalostomis boopis: Dejean, 1836.
= Megalostomis interrupta Dejean, 1836 (nomen nudum).
Megalostomis (Megalostomis) grossa Lacordaire, 1848.
= Megalostomis (Megalostomis) grossa brasiliana Achard, 1926.
= Megalostomis (Megalostomis) grossa cinctipennis Achard, 1926.
= Megalostomis grossa var. boopis Achard, 1926.
= Megalostomis grossa var. quadrimaculata Achard, 1926.
6. Megalostomis kollari Lacordaire, 1848 (COR, MNS).
Megalostomis (Scaphigenia) kollari Lacordaire, 1848.
7. Megalostomis lacordairei Lacordaire, 1848 (CAT, CHA, CTS, FOR, LRA, MNS, MZA, SAL, SEO, SFE, SJN, SLS, TUC). Host plants: Fabaceae (
= Megalostomis lacordairei Dejean, 1836 (nomen nudum).
Megalostomis (Heterostomis) lacordairei Lacordaire, 1848.
= Megalostomis (Heterostomis) histrionica Harold, 1875.
= Megalostomis (Heterostomis) lacordairei var. seminigra Achard, 1926.
= Megalostomis lacordairei var. basalis Achard, 1926.
= Megalostomis lacordairei var. collaris Achard, 1926.
= Megalostomis lacordairei var. conjuncta Achard, 1926.
= Megalostomis lacordairei var. consimilis Achard, 1926.
= Megalostomis lacordairei var. histrionica Achard, 1926.
= Megalostomis lacordairei var. interrrupta Achard, 1926.
= Megalostomis lacordairei var. reducta Achard, 1926.
8. Megalostomis querula Lacordaire, 1848 (CTS, ERS) Host plants: Salicaceae: Caesaria sylvestris (Guacatonga or wild coffee) (
Megalostomis (Minturnia) querula Lacordaire, 1848.
= Megalostomis (Minturnia) propinqua Lacordaire, 1848.
= Megalostomis (Minturnia) univittata pacifica Monrós, 1953a.
9. Megalostomis religiosa Lacordaire, 1848 (CTS, MNS).
= Megalostomis religiosa Dejean, 1836 (nomen nudum).
Megalostomis (Scaphigenia) religiosa Lacordaire, 1848.
= Megalostomis distincta Lacordaire, 1848.
10. Megalostomis robustipes Monrós, 1953a (MNS).
=Megalostomis (Minturnia) robustipes Monrós, 1953a.
11. Megalostomis tricincta (Germar, 1824) (CTS, MNS).
= Clythra tricincta Germar, 1824.
Megalostomis (Megalostomis) tricincta: Lacordaire, 1848.
= Megalostomis (Scaphigenia) bubalus Lacordaire, 1848.
= Megalostomis (Scaphigenia) religiosa Monrós, 1945 (nec Lacordaire, 1848).
= Megalostomis (Scaphigenia) bubalus bubaloides Monrós, 1953a.
12. Megalostomis univittata Lacordaire, 1848 (MNS, SAL).
= Megalostomis (Minturnia) univittata univittata Lacordaire, 1848.
= Megalostomis (Minturnia) univittata oblita Monrós, 1953a.
13. Megalostomis vianai Monrós, 1947 (MNS).
Megalostomis (Minturnia) vianai Monrós, 1947.
Themesia
This genus is close to Coscinoptera, from which it can be separated by its unicolored metallic green/blue coloration (except in T. costaricensis and T. lacordairei, not present in Argentina) and by its distinct body shape. Eyes large, non-emarginate and distinctly protruding; elytra glabrous without distinct punctation pattern, epipleurae reduced; pygidium flat; antennomere IV much smaller than V, not clavate; ventrites densely pubescent.
From Costa Rica to Colombia, and in Brazil, Paraguay, and Argentina.
1. Themesia auricapilla grandis Baly, 1877a (CTS, MNS, TUC).
Themesia grandis Baly, 1877a.
The most common characters to differentiate this tribe are the procoxae globose, distinctly separated by intercoxal prosternal process. In males of many species of Cryptocephalus (Cryptocephalina) and Griburius (Pachybrachina) the dorsal lobes of the eyes are strongly converging towards the median line and may come into contact with each other. Phylogenetic significance (if any) of this trait is unclear. The antennae are long and filiform in most genera, often reaching the humeral callus or further, although there are exceptions (eg. clavate in Fulcidacini).
The most distinctive character is the crenulate, not margined, base of pronotum. Some characters present variation, such as the tarsal claws which may be simple or appendiculate, or antennae, which may be short and clavate to subserrate.
Cryptocephalus
Geoffroy, 1762: 231 (conserved name);
Cryptocephalus Müller, 1764 (subsequent use).
= Physicerus Chevrolat, 1836.
= Strigogophorus Chevrolat, 1836 (nomen nudum).
= Dicenopsis Saunders, 1842.
= Mitocera Saunders, 1842.
= Ochrosopsis Saunders, 1843.
= Anodonta Saunders, 1845, not
= Idiocephala Saunders, 1845.
= Ochrosopsus: Saunders, 1845 (error).
= Canthostethus Haldeman, 1849.
= Mecostethus Stål, 1857.
= Euphyma Baly, 1877c.
Anteriorly flat head, deeply inserted into the prothorax; eyes reniform; leading edge of prothorax laterally straight; denticles present on posterior margin of pronotum; thorax closely fitted to base of elytra (thus sometimes concealing denticles); anterior margin of intercoxal prosternal process uniformly concave or with medial flange; intercoxal width equal to or greater than width of coxal cavity; ventrite I of male without spines. Rectal apparatus bearing one ventral and two dorsal sclerites.
Worldwide, with over 1700 species (
Although a complex subgeneric classification does exist for Palearctic species (
1. Cryptocephalus acuminatus Jacoby, 1907 (TUC).
2. Cryptocephalus argentinus Jacoby, 1907 (BAS).
3. Cryptocephalus carbonarius Burmeister, 1877 (BAS).
4. Cryptocephalus fusculus Suffrian, 1863 (BAS).
5. Cryptocephalus incommodus Suffrian, 1863 (BAS).
6. Cryptocephalus misellus Suffrian, 1857 (BAS, CTS).
7. Cryptocephalus tucumanensis Jacoby, 1907 (TUC).
8. Cryptocephalus subaenescens Jacoby, 1907 (TUC).
The members of this subtribe have the intercoxal prosternal process noticeably wider than long; tarsal claws appendiculate; antennae are usually short (rarely longer than base of pronotum) and antennomeres expanded laterally.
Lexiphanes
Gistel, 1848: 123;
= Monachus
= Monachulus
Lexiphanes may be most commonly confused with Stegnocephala and less so with Cryptocephalus. Both genera in Monachulina have shorter antennae (rarely surpassing half of entire body length) with antennomeres anteriorly expanded (less so in Lexiphanes). Also, the intercoxal prosternal process is wide and bilobed with small lateral projections and the anterior margin of intercoxal prosternal process uniformly concave (
This genus is restricted to the New World, from México to Argentina with over 100 species. 11 of which are present in Argentina.
1. Lexiphanes anthracinus (Burmeister, 1877) (Patagonia, RNO).
2. Lexiphanes biplagiatus (Boheman, 1858) (BAS, CTS).
3. Lexiphanes coenobita (Suffrian, 1863) (TUC).
4. Lexiphanes consimilis (Suffrian, 1863) (BAS).
5. Lexiphanes ebeninus (Burmeister, 1877) (SCZ).
6. Lexiphanes flavifrons (Burmeister, 1877) (Patagonia, SCZ).
7. Lexiphanes granarius (Suffrian, 1863) (Argentina).
8. Lexiphanes modestus (Boheman, 1858) (Argentina).
9. Lexiphanes nigritulus (Boheman, 1858) (BAS).
10. Lexiphanes ornatipennis (Jacoby, 1908) (TUC).
11. Lexiphanes saucius (Burmeister, 1877) (BAS).
Stegnocephala
Coxa widely separated, epipleural lobes strongly produced.
From Costa Rica to Argentina, mainly in tropical regions.
Stegnocephala discoidalis Baly, 1877c (MNS).
Stegnocephala xanthopyga (Suffrian, 1863) (TUC). This species newly cited for Argentina (Tucuman, Famaillá: Quebrada de Lules, 30-I-1942 // F. Monrós Collection 1959).
The following characters (when combined) can help with the identification of its members (
Griburius Haldeman, 1849: 245.
= Scolochrus Suffrian, 1852.
Recently,
Nearctic and Neotropical.
Griburius bilineolatus (Suffrian, 1866) (BAS, COR).
Griburius conspurcatus (Suffrian, 1866) (BAS).
Griburius cultus (Suffrian, 1866) (BAS).
Griburius fastidiosus (Suffrian, 1866) (BAS).
Griburius octoguttatus Burmeister, 1877 (ERS).
Griburius persimilis Burmeister, 1877 (BAS).
Metallactus
Metallactus includes species that lack a deeply excised lateral edge of the elytra, additionally, the following characters may be useful to segregate species into this genus: posterior margin of intercoxal prosternal process gradually narrowing, pointed; abdomen not exposed; elytral length greater than 2× length of pronotum (
Neotropical.
This genus has not been revised since its original description by
1. Metallactus albipes Suffrian, 1866 (CTS).
2. Metallactus albopictus Suffrian, 1866 (BAS, COR).
3. Metallactus argentinensis Jacoby, 1907 (COR).
4. Metallactus bivitticollis (Jacoby, 1907), comb. n. (BAS).
5. Metallactus divisus Jacoby, 1907 (SFE).
6. Metallactus generosus Suffrian, 1866 (CTS).
7. Metallactus inustus Suffrian, 1866 (BAS, CTS).
8. Metallactus luniger Suffrian, 1866 (Argentina).
9. Metallactus nigrofasciatus Suffrian, 1866 (COR, SLS). Host plant: Asteraceae: carqueja (Baccharis sp.) (
10. Metallactus nigrovittis Jacoby, 1907 (SFE).
11. Metallactus patagonicus Suffrian, 1866 (BAS, COR, MZA, RNO).
12. Metallactus pollens Suffrian, 1866 (CTS).
Mylassa
:
This genus can be easily distinguished from all others in the area by the presence of pubescence on its body and by the presence of a basal thoracic lobe with raised, thickened apex. Furthermore, it has nearly entire eyes and the rectal apparatus bears two ventral and three dorsal sclerites, with the shape of the dorsal central plate band-like (very narrow) (
This genus has eight species described form Southern Chile and Argentina, and some new species awaiting description. Species are found between 30°S and 42°S and are associated with sclerophyllous shrubs (
This genus was considered a synonym of Cryptocephalus by several authors, however several studies support its validity and it is hypothesized to be included in Pachybrachina (
1. Mylassa chachallaoi Monrós, 1949a (CHU, RNO). Host plant: Proteaceae: Lomatia obliqua (
2. Mylassa crassicollis (Blanchard, 1851) (NQN, RNO). Host plant: Anacardiaceae: “litrenillo”, Schinus? (
= Mylassa fasciatipennis Stål, 1857.
3. Mylassa discariana Monrós, 1949a (RNO). Host plant: Rhamnaceae: Discaria sp. (
4. Mylassa frigens Monrós, 1949a (NQN).
5. Mylassa obliquata (Suffrian, 1863) (NQN, RNO).
6. Mylassa pectinicornis (Suffrian, 1866) (NQN, RNO, CHU). Host plant: Proteaceae: Lomatia obliqua (
Pachybrachis : Chevrolat, 1836: 420.
= Pachybrachis Redtenbacher, 1845.
= Pachystylus Rey, 1883.
Pachybrachys
:
Posterior margin of intercoxal prosternal process relatively entire, rarely produced beyond posterior margin of prothorax; gestalt cylindrical (height of each elytron approximately 2.5 width), pronotum narrower than elytral bases combined, overall flattened not vaulted; punctation on head, prothorax and elytra evident, large; elytral punctation commonly confused (but punctation in rows not uncommon); fore-femora may or may not be enlarged; mesotibiae usually with terminal spur in both sexes.
Neartic, Neotropical, Palearctic, and Oriental regions.
A subgeneric classification exists for Palearctic species, Neotropical species have not yet been assigned to subgenera.
1. Pachybrachis foetidus Suffrian, 1866 (BAS)
2. Pachybrachis gayi Blanchard, 1851 (ARGENTINA). Host plant: Fagaceae: Nothofagus and Castanea (Jolivet, 1978).
3. Pachybrachis mysticus
4. Pachybrachis nigronotatus Boheman, 1858 (BAS)
5. Pachybrachis xanthogrammus Suffrian, 1866 (CTS, ERS).
= Chlamisini Gressitt, 1946
This tribe is the least diverse within Cryptocephalinae, and it is much more diverse in the Neotropics (
Aulacochlamys
Monrós, 1951c: 657;
The most salient feature of this genus is the presence medially on the pronotum of six elevated distinct, small, sharp, longitudinal carinae, which converge medially near the posterior margin, reminiscent of a fan. These are small beetles (less than 3 mm length), cylindrical; with antennae serrated beyond antennomere V. antennomeres III-V slightly widened, but not dilated distally; pronotal base opposite mesoscutellum (posterior pronotal lobe) with or without notch; intercoxal prosternal process gradually narrowing posteriorly, broadening before apex; metascutellum concealed by elytra; elytral suture completely serrate, although serration may be weak near scutellum, elytral tubercles well developed. Tibiae slightly curved, cylindrical. Aulacochlamys can easily be distinguished from Chlamisus Rafinesque by the presence of the six longitudinal carinae on its pronotum.
Pantropical, except Australia (
1. Aulacochlamys costicollis (Lacordaire, 1848) (CTS, JUY, MNS).
2. Aulacochlamys minuta Monrós, 1951c (MNS).
3. Aulacochlamys pygidialis Monrós, 1951c (MNS).
4. Aulacochlamys radiata Monrós, 1951c (MNS).
5. Aulacochlamys rectecarinata Monrós, 1951c (CTS, MNS, TUC).
6. Aulacochlamys ultima Monrós, 1951c (COR).
Chlamisus
Rafinesque, 1815: 116;
= Chlamys Knoch, 1801: 122.
= Myochlamys Ihering, 1907.
= Arthrochlamys Ihering, 1904.
= Boloschesis Jakobson, 1924.
This genus can be separated from Exema Lacordaire by the following characters: males without spines or spinulae on ventrite I; antennomere V nearly as large as VI; sutural serration of elytra usually incomplete (suture entire immediately following mesoscutellum); intercoxal prosternal process posteriorly pointed (narrowed), posteriorly much narrower than anterior margin (
Cosmopolitan, with over 400 species described worldwide (
1. Chlamisus achalay Monrós, 1951c (LRA, SAL).
2. Chlamisus aeronauticus Monrós, 1951c (JUY, SAL, TUC).
3. Chlamisus apricarius (Lacordaire, 1845) (CHT, NQN, RNO).
= Chlamys fulvescens Blanchard, 1851.
= Chlamys minuta Philippi & Philippi, 1864.
= Chlamys picta Philippi & Philippi, 1864.
4. Chlamisus clarapex Monrós, 1951c (MNS).
5. Chlamisus coya Monrós, 1951c (JUY).
6. Chlamisus discalceatus Monrós, 1951c (CHA).
7. Chlamisus discipennis (Jacoby, 1901) (MNS). Host plant: Sterculiaceae: Waltheria americana (
8. Chlamisus echinatus (Klug, 1824) (SAL) Host plant: Euphorbiaceae: Croton pohlianus (
9. Chlamisus gibbicollis (Lacordaire, 1848) (BAS, CHA, COR, ERS, FOR, JUY, MNS, SAL, TUC)
= Chlamys lebasii Lacordaire, 1848. Host plant: Sterculiaceae: Waltheria americana (
10. Chlamisus guarani Monrós, 1951c (CTS).
11. Chlamisus hirtus (Kollar, 1824) (CTS, MNS). Host plants: Fabaceae, Sapindaceae, Malvaceae, Sterculiaceae, Euphorbiaceae, (
12a. Chlamisus hispidulus hispidulus (Klug, 1824) (BAS, CHA, COR, FOR, JUY, LRA, MNS, SAL, SEO, SFE, SLS, TUC).
= Chlamys cordovensis Jacoby, 1901. Host plants: Fabaceae: Acacia sp., Acacia cavenia; Asclepiadaceae: “Tasi” (
12b. Chlamisus hispidulus llajtamaucanus Monrós, 1951c (COR, LRA, MZA, SEO).
13. Chlamisus impressus (Fabricius, 1801) (MNS).
14. Chlamisus inopinatus Monrós, 1951c (CTS).
15. Chlamisus integrithorax Monrós, 1951c (MNS).
16. Chlamisus kammerlacheri (Kollar, 1824) (MNS).
17. Chlamisus kurkuncho Monrós, 1951c (JUY, SAL).
18. Chlamisus langsdorfii (Kollar, 1824) (MNS).
= Chlamys rugosa Klug, 1824. Host plant: Fabaceae: Bauhinia rufa (Bokermann, 1963).
19. Chlamisus longicornis Monrós, 1951c (MNS).
20. Chlamisus melochiae Monrós, 1951c (COR, ERS, SAL, TUC). Host plant: Malvaceae: Sphaeralcea sp., Sterculiaceae: Melochia sp. (Monrós, 1951c), Waltheria americana (
21. Chlamisus mimicus Monrós, 1950 (BAS, COR, CTS). Host plant: Melastomaceae: Tibouchina sp. (
22. Chlamisus olivaceus (Kollar, 1824) (FOR).
= Chlamys bicolor Klug, 1824.
23. Chlamisus pilaga Monrós, 1951c (FOR). Host plant: Sapindaceae: Serjaria sp. (
24. Chlamisus perforatus Monrós, 1951c (MNS).
25. Chlamisus pilicollis Monrós, 1951c (MNS).
26. Chlamisus proseni Monrós, 1951c (JUY).
27a. Chlamisus puncticollis (Germar, 1824) (JUY).
= Chlamys muhlfeldii Kollar, 1824. Host plant: Sapindaceae: Serjaria sp. (Monrós, 1951c).
27b. Chlamisus puncticollis indigaceus (Lacordaire, 1848) (COR, MNS).
28. Chlamisus scortillus (Lacordaire, 1848) (CTS).
= Chlamys scortillum
29. Chlamisus scrobicollis (Lacordaire, 1848) (MNS, SAL).
30. Chlamisus sidae Monrós, 1951c (CHA, COR, CTS, FOR, JUY, MNS, SAL, TUC). Host plant: Malvaceae: Sida rhombifolia (Monrós, 1951c).
31. Chlamisus sordidulus Monrós, 1951c (CHA, CTS, FOR, JUY, MNS, SAL, SFE, TUC).
32. Chlamisus sulcatus (Kollar, 1824) (MNS).
= Chlamys cinnamomea Klug, 1824. Host plant: Malpighiaceae: Heteropteris seringiifolia (
33. Chlamisus tucumanus Monrós, 1951c (JUY, SAL, TUC). Host plant: Euphorbiaceae: Croton sp. (
34. Chlamisus vianai Monrós, 1951c (MNS).
Exema
Lacordaire, 1848: 844;
Small species (2–3.5 mm length), cylindrical with widest near shoulders; antenna serrate beyond antennomere V, antennomeres III-IV slightly widened, but not dilated distally; pronotum with various bumps and short ridges, posterior pronotal lobe concave, usually without well differentiated notch.
Present in Nearctic, Neotropical, and Oriental regions (
1. Exema carinipennis Monrós, 1951c (COR, MNS).
2. Exema morio (Kollar, 1824) (MNS).
= Chlamys dubia Kollar, 1824.
= Chlamys globosa Klug, 1824 (nec Kollar, 1824). Host plant: Bambuseae (
3. Exema serjaniae Monrós, 1951c (CHA, FOR, SAL, TUC). Host plant: Sapindaceae: Serjania sp. (
4. Exema variopicta Monrós, 1951c (COR, JUY, MNS, SAL, SLS). Host plant: Verbenaceae: Lantana hypoleuca and Lipia salvifolia (
Fulcidax
= Poropleura
This genus includes some of the larger and more charismatic species in the group (6.5–7.2 mm length). Body subquadrate and metallic, antenna serrate beyond antennomere III; the head with a longitudinally impressed vertex; elytral tubercles pronounced; posterior pronotal lobe with an acute notch; sutural serration of elytra well-developed beyond the middle of suture towards apex; ventrite I with lateral tubercles; fore- and midtibial apices with spine; tarsal claws simple. According to
From Mexico to Argentina, with seven species.
This is a small genus with only seven described species (
1. Fulcidax bacca (Kirby, 1818) (CTS, JUY, MNS, SAL, TUC). Host plants: Fabaceae: Acacia sp., Prosopis sp. (
Melittochlamys
Monrós, 1948a: 192;
Melittochlamys can be separated from all other genera by the nearly rectangular prosternal process; since the process is more or less triangular in all other genera of warty leaf beetles. Intermediate size (length 3.60-5.20 mm); body shape subglobular; antenna serrate beyond antennomere III, antennomere III slightly dilated distally; pronotum without median elevation, relatively smooth; sutural serration of elytra absent or weakly developed; elytra without well developed tubercles; appendiculate tarsal claws.
The genus include 13 Neotropical species (
1. Melittochlamys specula (Klug, 1824) (MNS). Host plant: Myrtaceae: Psidium guayaba y Psidium sp. (Araça) (
Pseudochlamys
Pseudochlamys can be distinguished from all other genera in the tribe by: head not completely retracted into prothorax; mandibles enlarged in males (sexual dimorphism); intercoxal prosternal process strongly and abruptly constricted beyond anterior margin; and prosternal process more than ¾ as long as intercoxal prosternal process. These beetles are small sized (length 3.45-4.72 mm), cylindrical; body usually yellowish; canthus of eye as yellow as rest of frons; pronotum and elytra glabrous; head not completely retracted into prothorax; mandibles enlarged in males; antenna serrate beyond antennomere III, antennomere II slightly widened, globose, antennomere V as large as VI; posterior pronotal lobe with well differentiated notch; intercoxal prosternal process strongly and abruptly constricted beyond anterior margin; sutural serration of elytra complete; elytral tubercles poorly developed; tarsal claws bifid or appendiculate.
This genus contains only five species, distributed in North, Central, and South America (
Pseudochlamys seminigra (Jacoby, 1904) (MNS).
Adults: Body compact, strongly convex; head inserted into prothorax (not visible from above). Pronotum convex tightly appressed to elytral base; antennal groove present on each side of prosternal process. Elytra covering pygidium. Larva differs from Cryptocephalinae as pointed out in previous section.
This tribe is composed of 10 genera (
body length about 4.5 mm; tarsal claws appendiculate with broad tooth; antenna short, antennomere VIII nearly as wide as VII or IX. Metallic coloration (some species multicolored), head not visible from above, clypeus excavate. According to
Nearctic, Neotropical, in Argentina limited to north, and northeastern provinces.
Adults feed on plants of the families Bombacaceae, Combretaceae, Melastomataceae, Mimosaceae. Therefore, some species have been considered as potential biological control agents for these plants (
1. Lamprosoma acaciae Monrós, 1948b (JUY, SAL, TUC). Host plant: Fabaceae: Acacia spp. (Bark-gnawing).
2. Lamprosoma azureum
3. Lamprosoma chorisiae Monrós, 1948b (CHA).
= Lamprosoma chaguanacum Monrós, 1948b. Parasitoids: Gelini and Hemitelini (Ichneumonidae) (
4. Lamprosoma indigaceum Monrós, 1947 (CTS).
5. Lamprosoma minimum Monrós, 1948b (SAL). Host plant: Fabaceae: Acacia cavenia (Bark-gnawing).
6. Lamprosoma subnitidum Monrós, 1948b (CTS).
7. Lamprosoma triste Guérin-Ménéville, 1844 (Northeast Argentina).
8. Lamprosoma zariateguii Monrós, 1947 (MNS).
This is the first comprehensive synthesis of Argentinian Camptosomata. This study may prove useful also for countries bordering Argentina. Similar contributions indicated the diversity of Camptosomata in other Neotropical countries as follows:
Historically, Argentina has been divided in two main regions: Andean and Neotropical (Morrone, 2014). As depicted in the distribution pattern of Camptosomata tribes and subtribes by province (Fig.
Within Clytrini (Fig.
Cryptocephalini, on the other hand, is putatively mostly absent from the Northwestern provinces of Argentina. The presence of this tribe in Tucumán might indicate a more widespread distribution. Sampling bias and poor inventory may explain the absence of Fulcidacini in central and western regions of Argentina. The subtribes of Cryptocephalini (Fig.
A total of 190 species (182 Cryptocephalinae + 8 Lamprosomatinae) of Camptosomata are currently known from Argentina. The most diverse group of Camptosomata in Argentina is Clytrini (Fig.
Our synthesis here is a necessary step towards further comprehensive study of Argentinian Camptosomata that will facilitate field work, assist in determination of unidentified material housed in South American collections, creation of illustrated of keys to the species level, and with identified specimens in hand achieve databasing of museum specimens. These elementary tasks are prerequisite to modern taxonomic revisions and evolutionary studies.
The authors’ respective institutions supported this research. FAA is grateful to CONICET for continued research support, and ANPCyT (Agencia Nacional de Promoción Científica y Técnica, Argentina) for providing support through PICT#2013–2211. Additional support for this research was provided by the Synthesys Project (http://www.synthesys.info/) financed by the European Community Research Infrastructure Action, under GB-TAF-3383 and DE-TAF-4995. We are grateful to Cecilia Gorretta for providing some images. We also thank Shawn Clark and Chris Reid for their careful review of this manuscript, which included several useful comments and excellent suggestions that have greatly improved our work. USDA is an equal opportunity employer and provider.