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The Blattodeas.s. (Insecta, Dictyoptera) of the Guiana Shield
expand article infoDominic A. Evangelista‡, Kimberly Chan‡, Kayla L. Kaplan‡, Megan M. Wilson‡, Jessica L. Ware‡
‡ Rutgers University, Newark, United States of America

Corresponding author: Dominic A. Evangelista ( dominicev@gmail.com )

Academic editor: Sam Heads
© 2015 Dominic A. Evangelista, Kimberly Chan, Kayla L. Kaplan, Megan M. Wilson, Jessica L. Ware.
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: Evangelista DA, Chan K, Kaplan KI, Wilson MM, Ware JL (2015) The Blattodea s.s. (Insecta, Dictyoptera) of the Guiana Shield. ZooKeys 475: 37-87. https://doi.org/10.3897/zookeys.475.7877
ZooBank: urn:lsid:zoobank.org:pub:C4ACAF17-E887-406A-AF7C-6D0155E7F392
Open Access

Abstract

Here we provide a checklist of cockroach species known from areas within the Guiana Shield based on literature records and new field collection. We give records of sixteen species collected in Guyana, eight of which are new records for Guyana and one of which is a new generic record for the entire Guiana Shield. We also provide a description for a geographically disparate species of Calhypnorna Stal, and the new species Xestoblatta berenbaumae. The complete checklist contains 234 species of Blattodeas.s. currently known in the shield. This checklist shows particularly low richness in Guianan Venezuela, Roraima and Amapa Brazil, but this is likely an artifact due to under–sampling. Indeed, based on previously published data and current fieldwork, we believe that most regions of the Guiana Shield are under–sampled for cockroaches. Despite this, French Guiana (151 spp.) and Suriname (136 spp.) rank as the second and sixth most species dense faunas of cockroaches in the neotropics.

Keywords

Cockroach, species richness, Calhypnorna , Xestoblatta , Guyana

Introduction

The Guiana Shield is known for a high diversity of both plant and animal life (Alexander et al. 2005). Blattodea (Insecta: Dictyoptera), or cockroaches and termites, as well as most other insects, remain under-sampled relative to their biodiversity in the region. Developing more complete lists of fauna improves our ability to infer biogeographical patterns and make predictions about biodiversity loss. Additionally, keeping current records of regional faunas can assist in documenting introduced and invasive species, something particularly relevant to the study of cockroaches (Evangelista et al. 2013; Nickle 1984; Peterson and Cobb 2009).

The cockroach fauna of the entire Guiana Shield has previously been addressed by three works (i.e. Bonfils 1975; Bruijning 1959; Princis 1963). Princis’ catalogue (1963) of global cockroach distributions is an important resource to consult for this fauna. However, there were cases (although very few) where Princis was incomplete in his records (pers. obs.; Pellens and Grandcolas 2008). Bruijning’s (1959) and Bonfils’ (1975) checklists are more manageable than Princis’s global catalog given their focused geographic scope, but they are also an incomplete record of the fauna. Regardless, Bonfils’ (1975), Bruijning’s (1959) and Princis’ (1963) work are all now 40 years or more out of date.

The cockroach fauna of sections of the Guiana Shield have been addressed directly by a few sources (e.g., Bonfils 1987; Bruijning 1959; Hebard 1926; Perez 1988; Rehn 1906; Rocha E Silva Albuquerque and Gurney 1962) as well as peripherally by others (e.g., Evangelista et al. 2014; Hebard 1921b; 1929; Pellens and Grandcolas 2008; Rehn 1928; Velez 2008). A few manuscripts have addressed the Blattodean faunas of French Guiana (Hebard 1926) and Suriname (Bruijning 1959) respectively. The Guianan fauna of relevant parts of Brazil and Venezuela are available from checklists for these respective countries (Bonfils 1987; Pellens and Grandcolas 2008; Perez 1988). However, there is no singular source to be consulted for the Blattodean fauna of Guyana (formerly known as British Guyana).

Lastly, the most current phylogenies of Blattodea all show that termites (Termitoidae) are nested within Blattodea (Djernaes et al. 2012, 2014; Inward et al. 2007; Ware et al. 2008). Given that this has only been recently adopted by systematists, there are few taxonomic treatments considering both termites and cockroaches simultaneously. Since each insect group requires very different morphological and organismal expertise this is understandable. In following, we present the most recent summative list of the non-termite Blattodea fauna of the Guiana Shield as well as for the country of Guyana.

Methods

Checklist

The checklist was initially compiled by synthesizing range data from the published literature. Searches for taxonomic records included some combination of the following locality names: British Guiana, Suriname, French Guiana, Guyane, Guiana or Guyana. Five additional sources were consulted (Bonfils 1987; Lopez-Osorio and Miranda-Esquivel 2010; Pellens and Grandcolas 2008; Perez 1988) for the taxa of the following states: Amazonas Venezuela, Bolivar Venezuela, Delta Amacuro Venezuela, Roraima Brazil and Amapa Brazil. The states of Para and Amazonas in Brazil were omitted because the majority of these states do not fall within the borders of the Guiana Shield. The recently published checklist of the cockroaches of Brazil (Pellens and Grandcolas 2008) sufficiently covered the fauna of these states. We treated ranges specified by Princis (1963) as circumtropical, neotropical, or cosmopolitan as a presence for each region, even without a specific record for that region. Additional records were added based on specimens collected by the Ware lab in the field.

The validity of all taxonomic names was verified on the Cockroach Species File (CSF) online database (Beccaloni 2014). All synonymous names were changed to their valid name in the final checklist. All invalid higher taxa were given proper names in accordance with the most current taxonomy (Beccaloni and Eggleton 2011, 2013).

Specimen collection

We collected cockroaches from the field on four occasions from 2011 to 2013. All specimens were collected in Guyana. Specific collection information (locality and GPS, collection date, collectors and ecological information) is given with each record.

New records and descriptions

Species that were collected and could be identified are presented here. We report all collection information and some morphological information for each specimen as well as currently known geographic distribution as described on the Cockroach Species File database (Beccaloni 2014). All morphological measurements were done using Infinity software (INFINITY Camera Software 2013). For new species, we provide descriptions of gross morphology and male genitalia. The genitalia were dissected in accordance with the method of Roth (1969), whereby the genitalia are removed from the specimen by making a lateral incision along the subgenital plate, separating the genitalia from the remainder of the body and placing them in a KOH (10% by mass) solution until cleared (approx. 8 hours). Cleared genitalia were kept in a micro-vial with 70% ethanol after examination. We also include some notes on potential evolutionary relationships of some genera by referencing the cytochrome oxidase I (COI) gene tree published by the first and last author (Evangelista et al. 2014).

We imported the checklist data into Mathematica 9.1 (Wolfram Research 2012) to calculate the endemism rates of the faunas of each region. We calculated this as the proportion of species in a given region not present in any other region of the shield. We also calculated faunal similarity rates (inverse of endemism) among each region.

Results

Records and descriptions of cockroaches from Guyana

Here we report information on some of the specimens from our field collection. Those species listed here that are new records for Guyana are denoted by a “+” in the checklist (Table 1). Morphological measurements for all specimens are given in Table 2.

Table 1.
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Checklist of species from 8 regions of the Guiana Shield. ? = Record with a non-specific locality, and thus unconfirmed in this region. o = Presence record from published literature. + = new record from this paper. Amaz VEN = Amazonas Venezuela, Bolivar VEN = Bolivar Venezuela, Del Ama VEN = Delta Amacuro Venezuela, Rora BRA = Roraima Brazil, GUY = Guyana, SUR = Suriname, FG = French Guiana, Amapa BRA = Amapa Brazil.

Taxon Amaz VEN Bolivar VEN Del Ama VEN Rora BRA GUY SUR FG Amapa BRA Source
Blaberidae
Blaberinae
Blaberus atropos (Stoll, 1813) ? ? ? o (Bruijning 1959; Hebard 1929; Perez 1988; Princis 1963; Princis and Kevan 1955; Walker 1868)
B. colosseus (Illiger, 1801) o o (Bonfils 1987; Princis 1963; Hebard 1916)
B. craniifer Burmeister, 1838 o o (Princis 1963; Gutierrez and Perez-Gelabert 2000 )
B. discoidalis Serville, 1838 o (Princis 1963; Perez 1988; Princis and Kevan 1955; Gutierrez and Perez-Gelabert 2000)
B. giganteus (Linnaeus, 1758) o o o o (Bonfils 1975; Bruijning 1959; Gutierrez and Perez-Gelabert 2000; Hebard 1926, 1921b; Pellens and Grandcolas 2008; Perez 1988; Princis 1963; Princis and Kevan 1955; Rocha e Silva Albuquerque and Gurney 1962; Walker 1868)
B. latissimus (Herbst, 1786) o (Princis 1963)
B. parabolicus Walker, 1868 o (Bruijning 1959; Princis 1963)
Eublaberus distanti (Kirby, 1903) o o o o (Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Princis 1963)
E. posticus (Erichson, 1848) o o o (Bruijning 1959; Hebard 1926, 1929; Princis 1963; Princis and Kevan 1955; Rehn 1906)
E. sulzeri (Guerin-Meneville, 1857) o (Princis 1963)
Hormetica laevigata Burmeister, 1838 o (Perez 1988)
H. marmorata (Saussure, 1869) ? ? ? (Bonfils 1987; Perez 1988; Princis 1963)
Lucihormetica verrucosa (Brunner von Wattenwyl, 1865) ? ? ? (Perez 1988; Hebard 1929; Princis 1963)
Neorhicnoda maronensis (Hebard, 1921) + o o (Bonfils 1975; Bruijning 1959; Grandcolas 1992b; Hebard 1921b, 1926; Princis 1963)
Paradicta rotunda Grandcolas, 1992 o (Grandcolas 1992b)
P. circumvagans (Burmeister, 1838) o o o o o o o o (Princis 1963)
Phoetalia pallida (Brunner von Wattenwyl, 1865) o o o o o o o o (Baaren et al. 2002; Bruijning 1959; Princis 1963; Princis and Kevan 1955)
Sibylloblatta pustulata (Hebard, 1929) ? ? ? (Bonfils 1987; Perez 1988)
Epilamprinae
Colapteroblatta bordoni Bonfils, 1987 o (Bonfils 1987)
C. surinama (Saussure, 1868) o o (Princis 1963; Roth Gutierrez 1998)
Dryadoblatta mira Rehn, 1937 o (Bonfils 1987; Perez 1988; Princis 1963; Rehn 1937a)
Epilampra abdomennigrum (De Geer, 1773) o o o (Bonfils 1975; Bruijning 1959; Hebard 1921b, 1926, 1929; Princis 1963; Princis and Kevan 1955; Rehn 1903; Shelford 1910)
E. amapae Rocha e Silva Albuquerque & Gurney, 1962 o (Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
E. azteca Saussure, 1868 o o o (Bonfils 19751987; Bruijning 1959; Hebard 1921b, 1926; Perez 1988; Princis 1963; Princis and Kevan 1955)
E. bromeliacea Princis, 1965 o (Princis 1963)
E. carsevennae Bonfils, 1975 o (Bonfils 1975)
E. colorata Rocha e Silva Albuquerque & Gurney, 1962 o (Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
E. conferta Walker, 1868 o (Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
E. conspersa Burmeister, 1868 o o o (Bruijning 1959; Hebard 1921b, 1926; Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
E. crossea Saussure, 1864 o o (Bonfils 1975; Bruijning 1959; Hebard 1921b, 1926; Princis 1963)
E. egregia Hebard, 1926 o o (Bonfils 1975; Bruijning 1959; Princis 1963)
E. fusca Brunner von Wattenwyl, 1865 ? ? ? o o (Bruijning 1959; Perez 1988; Princis 1963; Rehn 1906)
E. grisea (De Geer, 1773) o o o o (Baaren et al. 2002; Bonfils 1975; Bruijning 1959; Hebard 1921b, 1926; Pellens and Grandcolas 2008; Perez 1988; Princis 1963; Rehn 1903, 1906; Rocha e Silva Albuquerque and Gurney 1962; Shelford 1910; Walker 1868)
E. guianae Hebard, 1926 o o o (Bruijning 1959; Hebard 1926; Princis 1963)
E. maculicollis (Serville, 1838) o o (Hebard 1921b; Rehn 1906)
E. opaca Walker, 1868 ? o o o o (Bonfils 1975; Bruijning 1959; Hebard 1926, 1929; Pellens and Grandcolas 2008; Perez 1988; Rocha e Silva Albuquerque and Gurney 1962; Roth 1970; Walker 1868)
E. sagitta Hebard, 1929 o (Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
E. sodalis Walker, 1868 o + o o o (Bonfils 1975; Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Perez 1988; Princis 1963)
E. substrigata Walker, 1868 o o (Pellens and Grandcolas 2008; Perez 1988; Princis 1963; Roth 1970; Rocha e Silva Albuquerque and Gurney 1962; Shelford 1910)
E. taira Hebard, 1926 o o o (Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Princis 1963)
Galiblatta cribrosa Hebard, 1926 o o (Bruijning 1959; Hebard 1926)
Notolampra punctata Saussure, 1862 o o o (Hebard 1926; Pellens and Grandcolas 2008; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
Phoraspis pellucens (Thunberg, 1826) o (Princis 1963; Shelford 1910)
Oxyhaloinae
Nauphoeta cinerea (Olivier, 1789) o o o o o o o o (Princis 1963)
Rhyparobia maderae (Fabricius, 1781) o o o o o o o o (Bonfils 1987; Bruijning 1959; Hebard 1926; Perez 1988; Princis and Kevan 1955)
Panchlorinae
Achroblatta luteola (Blanchard, 1843) o o o (Bruijning 1959; Hebard 1926; Princis 1963)
Panchlora aurora Hebard, 1926 o o o (Bonfils 1975; Bruijning 1959; Hebard 1926; Princis 1963)
P. bidentula Hebard, 1916 o o o (Bonfils 1975; Bonfils 1987; Bruijning 1959; Hebard 1926; Perez 1988; Princis 1963; Princis and Kevan 1955)
P. dumicola Rocha e Silva Albuquerque & Gurney, 1962 o (Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
P. exoleta Burmeister, 1838 ? ? ? o (Pellens and Grandcolas 2008; Perez 1988; Rocha e Silva Albuquerque and Gurney 1962)
P. fraterna Saussure & Zehntner, 1893 o o (Bruijning 1959; Hebard 1929; Princis 1963)
P. hebardi Princis, 1951 o o o (Bonfils 1975; Princis 1963)
P. maracaensis Lopes & Oliveira, 2000 o (Pellens and Grandcolas 2008)
P. nivea (Linnaeus, 1758) o o o o o o o o (Bonfils 1975; Bruijning 1959; Hebard 1921b, 1926, 1929; Pellens and Grandcolas 2008; Perez 1988; Princis 1963; Princis and Kevan 1955; Walker 1868)
P. peruana Saussure, 1864 o (Rehn 1906)
P. regalis Hebard, 1926 o o o (Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
P. thalassina Saussure & Zehntner, 1893 o o o (Bonfils 1987; Pellens and Grandcolas 2008; Perez 1988)
P. viridis (Fabricius, 1775) o (Gutierrez and Perez-Gelabert 2000; Rehn 1906)
Pycnoscelinae
Proscratea complanata (Perty, 1832) o o (Bonfils 1975; Bruijning 1959; Hebard 1926; Princis 1963)
Pycnoscelus surinamensis (Linnaeus, 1758) o o o o o o o o (Bonfils 1987; Bruijning 1959; Hebard 1926; Perez 1988; Princis 1963; Princis and Kevan 1955; Rehn 1906)
Zetoborinae
Lanxoblatta emarginata (Burmeister, 1931) o o o (Bruijning 1959; Hebard 1921b, 1926; Princis 1963)
Phortioeca nimbata (Burmeister, 1838) o o (Bruijning 1959; Hebard 1921b, 1926; Princis 1963)
Schizopilia fissicollis (Serville, 1838) o o (Bruijning 1959; Hebard 1921b, 1926; Princis 1963; Rehn and Hebard 1927; Shelford 1910)
S. neblinensis Lindemann, 1971 o (Beccaloni 2007; Bonfils 1987)
S. nitor Grandcolas, 1991 o (Baaren et al. 2002; Grandcolas 1990)
Thanatophyllum akinetum Grandcolas, 1991 + o (Grandcolas 1990)
Tribonium guyanense Grandcolas, 1993 o (Grandcolas 1993b)
Zetoborella gemmicula Hebard, 1921 o o (Bruijning 1959; Hebard 1921b, 1926; Princis 1963)
Blattidae
Blattinae
Blatta orientalis Linnaeus, 1758 o o o o o o o o (Princis 1963)
Neostylopyga rhombifolia (Stoll, 1813) o o o o o o o o (Perez 1988; Princis 1963)
Pelmatosilpha guianae Hebard, 1926 o o o (Baaren et al. 2002; Bonfils 1975; Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Rehn 1930)
P. lata Hebard, 1929 o o (Bruijning 1959; Hebard 1929; Princis 1963; Rehn 1930)
P. macu Rehn, 1930 o (Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
P. miranha Rehn, 1930 o (Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
Periplaneta americana (Linnaeus, 1758) o o o o o o o o (Bruijning 1959; Hebard 1926; Princis 1963; Perez 1988; Princis and Kevan 1955)
P. australiasiae (Fabricius, 1775) o o o o o o o o (Bruijning 1959; Hebard 1926; Princis 1963; Perez 1988; Princis and Kevan 1955; Rocha e Silva Albuquerque and Gurney 1962)
P. brunnea Burmeister, 1838 o o o o o o o o (Bruijning 1959; Hebard 1921b, 1926; Perez 1988; Princis 1963; Princis and Kevan 1955)
Polyzosteriinae
Eurycotis blattoides Hebard, 1926 o o o (Bruijning 1959; Hebard 1926; Princis 1963)
Corydiidae
Corydiinae
Eulissosoma stygia Hebard, 1926 o o (Hebard 1926)
Holocompsinae
Holocompsa nitidula (Fabricius, 1781) o o o o o o o o (Bruijning 1959; Hebard 1921b, 1926; Princis 1963; Princis and Kevan 1955; Rehn 1906)
Latindiinae
Buboblatta geijskesi Bruijning, 1959 o (Bruijning 1959; Princis 1963)
Latindia dohrniana Saussure & Zehntner, 1894 ? ? ? ? ? o o ? (Bruijning 1959; Hebard 1921b, 1926; Princis 1963)
Tiviinae
Melestora fusca Rocha e Silva Albuquerque, 1964 o (Bonfils 1987; Perez 1988)
Oulopteryx dascilloides Hebard, 1921 o o (Bruijning 1959; Hebard 1921b, 1926; Princis 1963)
Sphecophila polybiarum Shelford, 1907 o (Bruijning 1959; Hebard 1921b, 1926)
Ectobiidae
Anaplectinae
Anaplecta analisignata Rehn, 1916 o (Pellens and Grandcolas 2008)
A. balachowskyi Bonfils, 1975 o (Bonfils 1975)
A. bivittata Brunner von Wattenwyl, 1865 o o (Bonfils 1987; Pellens and Grandcolas 2008; Perez 1988; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
A. guianae Bruijning, 1959 o (Bruijning 1959)
A. hemiscotia Hebard, 1920 o (Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
A. jari Rocha e Silva Albuquerque, 1966 o (Pellens and Grandcolas 2008)
A. lateralis Burmeister, 1838 o (Bonfils 1987; Perez 1988; Princis 1963)
A. maronensis Hebard, 1921 o o o (Bruijning 1959; Hebard 1921b; Pellens and Grandcolas 2008)
A. minutissima (De Geer, 1773) o o (Bruijning 1959; Hebard 1926)
A. parviceps (Walker, 1868) o o o o (Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008)
A. pluto Hebard, 1926 o o (Bonfils 1975; Bruijning 1959; Hebard 1926; Princis 1963)
A. poecila Hebard, 1926 o o o o o (Bonfils 1975; Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Perez 1988; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
A. pulchella Rehn, 1906 o o o o (Bruijning 1959; Hebard 1921b; Pellens and Grandcolas 2008; Rehn 1906)
A. pygmaea Bruijning, 1959 o (Bruijning 1959; Princis 1963)
A. subsignata Hebard, 1926 o o o o (Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Perez 1988; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
A. suffusa Hebard, 1926 o o o o (Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Perez 1988; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
Maraca fossata Hebard, 1926 o o o (Bruijning 1959; Hebard 1926; Perez 1988; Princis 1963)
Attaphilinae
Attaphila aptera Bolivar, 1905 o (Bruijning 1959; Princis 1963)
Blattellinae
Anisopygia decora Hebard, 1926 + o (Bruijning 1959; Hebard 1926)
Blattella germanica (Linnaeus, 1767) o o o o o o o o (Bonfils 1987; Perez 1988; Princis 1963; Princis and Kevan 1955)
Cahita insignis (Hebard, 1926) o (Bruijning 1959; Hebard 1926; Rehn 1937a)
Chromatonotus coloratus Rocha e Silva Albuquerque, 1964 o (Perez 1988)
C. infuscatus (Bruner, 1906) o (Bonfils 1987; Princis 1963; Princis and Kevan 1955)
C. notatus (Brunner von Wattenwyl, 1893) o o (Bonfils 19751987; Bruijning 1959; Hebard 1926; Princis 1963)
Dasyblatta charpentierae Bonfils, 1975 o (Bonfils 1975)
D. maldonadoi Rocha e Silva Albuquerque, 1964 o (Bonfils 1987; Perez 1988; Princis 1963)
D. stylata Bonfils, 1975 o (Bonfils 1975)
D. thaumasia Hebard, 1921 o (Bonfils 1975; Bruijning 1959; Princis 1963)
Eudromiella bequaerti Rehn, 1932 o (Bonfils 1987; Perez 1988; Princis 1963)
E. chopardi Hebard, 1926 o o (Bruijning 1959; Hebard 1926; Princis 1963)
E. inexpectata (Rehn, 1906) o o (Bruijning 1959; Hebard 1926, 1929; Princis 1963; Rehn 1906)
E. maroni Hebard, 1926 o (Bruijning 1959; Hebard 1926)
Ischnoptera atrata Hebard, 1916 o (Princis 1963; Hebard 1916)
Ischnoptera castanea Saussure, 1869 o o (Bonfils 1987; Pellens and Grandcolas 2008; Perez 1988; Rocha e Silva Albuquerque and Gurney 1962)
I. clavator Rehn, 1918 o (Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
I. galibi Hebard, 1926 o o (Bonfils 1975; Bruijning 1959; Hebard 1926)
I. hercules Rehn, 1928 o o (Bruijning 1959; Princis 1963; Rehn 1928)
I. neoclavator Rocha e Silva Albuquerque, 1964 o (Bonfils 1987; Perez 1988; Princis 1963)
I. ocularis Saussure, 1873 o (Beccaloni 2007)
I. paramacca Hebard, 1926 o o o (Bonfils 1975; Bruijning 1959; Hebard 1926; Princis 1963)
I. rehni Hebard, 1926 o o o o (Bonfils 1975, 1987; Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
I. rufa (De Geer, 1773) o o (Bruijning 1959; Gutierrez and Perez-Gelabert 2000; Princis and Kevan 1955; Rehn 1903)
I. stygia Hebard, 1926 o o o o o (Bonfils 1975; Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Perez 1988; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
Pseudomops affinis (Burmeister, 1838) o o o o (Bruijning 1959; Hebard 1926, 1929; Pellens and Grandcolas 2008; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962; Walker 1868)
P. angustus Walker, 1868 o (Bonfils 1987; Perez 1988; Princis 1963)
P. brunneri (Saussure, 1869) o o (Bruijning 1959; Hebard 1929; Princis 1963)
P. crinicornis (Burmeister, 1838) o (Rehn 1906)
P. luctuosus (Saussure, 1868) o o o (Bruijning 1959; Hebard 1926; Princis 1963)
P. oblongatus (Linnaeus, 1758) ? o o (Bonfils 1975; Bruijning 1959; Princis 1963; Walker 1868)
Xestoblatta agautierae Grandcolas, 1992 + o (Grandcolas 1992a)
X. amaparica Rocha e Silva Albuquerque & Gurney, 1962 o o (Bonfils 1987; Pellens and Grandcolas 2008; Perez 1988; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
X. carbuncula Grandcolas, 1992 o (Grandcolas 1992a)
X. castanea Hebard, 1926 o o (Bruijning 1959; Hebard 1926; Princis 1963)
X. cavicola Grandcolas, 1992 o (Grandcolas 1992a)
X. jygautieri Grandcolas, 1992 o (Grandcolas 1992a)
X. micra Hebard, 1921 o (Princis 1963)
X. nourragui Grandcolas, 1992 o (Grandcolas 1992a)
X. nyctiboroides (Rehn, 1906) o o (Bruijning 1959; Hebard 1926; Princis 1963; Rehn 1906)
X. berenbaumae sp. n. + New record
X. surinamensis Bruijning, 1959 o o (Bonfils 1975; Bruijning 1959; Princis 1963)
Nyctiborinae
Megaloblatta insignis (Serville, 1838) o o (Bruijning 1959; Hebard 1926; Princis 1963)
Nyctibora brunnea (Thunberg, 1826) o o (Bonfils 1975; Perez 1988; Hebard 1921b)
N. dichropoda Hebard, 1926 + o o (Hebard 1926; Princis 1963)
N. latipennis Burmeister, 1838 o o o (Bruijning 1959; Hebard 1926; Princis 1963; Rehn 1906; Walker 1868)
N. tenebrosa Walker, 1868 o o o o (Bonfils 19751987; Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Princis 1963; Walker 1868)
Paramuzoa alsopi Grandcolas, 1993 o (Grandcolas 1993a)
Paratropes elegans (Burmeister, 1838) o o o o (Bruijning 1959; Hebard 1921b; Pellens and Grandcolas 2008; Princis 1963; Rehn 1906; Rocha e Silva Albuquerque and Gurney 1962; Walker 1868)
P. phalerata (Erichson, 1848) o o o (Bruijning 1959; Hebard 1929; Princis 1963; Princis and Kevan 1955)
Pseudischnoptera lineata (Olivier, 1789) o o (Princis 1963; Hebard 1921b, 1926; Rehn and Hebard 1927)
Pseudophyllodromiinae
Amazonina conspersa (Brunner von Wattenwyl, 1865) o o o o o (Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Perez 1988; Princis 1963)
A. impuctata Rocha e Silva Albuquerque, 1995 o (Bonfils 1987; Perez 1988; Princis 1963)
A. lanei Rocha e Silva Albuquerque, 1962 o o (Pellens and Grandcolas 2008; Perez 1988; Rocha e Silva Albuquerque and Gurney 1962)
A. platystylata (Hebard, 1921) o o o (Bruijning 1959; Perez 1988; Hebard 1921b, 1929)
Arawakina frontalis Hebard, 1926 o o (Bruijning 1959; Hebard 1926; Princis 1963)
Calhypnorna sp. Saussure & Zehntner, 1893 + New record
Cariblatta personata Rehn, 1916 o (Bruijning 1959; Hebard 1926)
Cariblattoides gruneri Bonfils, 1975 o (Bonfils 1975)
C. guyanensis Bonfils, 1975 o (Bonfils 1975)
C. sinnamariensis Bonfils, 1975 o (Bonfils 1975)
Ceratinoptera picta Brunner von Wattenwyl, 1865 o o (Bonfils 1975; Bruijning 1959; Hebard 1926; Princis 1963; Princis and Kevan 1955)
C. albonervosa Rehn, 1916 o o (Bonfils 1975; Bruijning 1959; Hebard 1926; Princis 1963)
C. barticae Hebard, 1921 o o o (Bonfils 1975; Bruijning 1959; Hebard 1921b, 1926; Princis 1963)
C. cistelina (Walker, 1868) o o (Bonfils 1975; Bruijning 1959; Hebard 1926)
C. elegantula Hebard, 1926 o o (Bruijning 1959; Hebard 1926; Princis 1963)
C. fuscipennis Hebard, 1920 o o (Bruijning 1959; Hebard 1926; Princis 1963)
C. galibi Hebard, 1926 o o (Bonfils 1975; Bruijning 1959)
C. gatunae Hebard, 1921 o o (Bruijning 1959; Hebard 1926; Perez 1988; Princis 1963)
C. gracilis (Saussure, 1862) o o (Bruijning 1959; Princis 1963; Rehn 1906)
C. guianae Hebard, 1921 o o o (Bruijning 1959; Hebard 1921b, 1926)
C. heydei Bruijning, 1959 o (Bruijning 1959; Princis 1963)
C. inversa Hebard, 1926 o o o o (Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Princis 1963)
C. lata Rehn, 1916 o o (Bonfils 1975; Bruijning 1959; Hebard 1921b, 1926)
Chorisoneura multivenosa Saussure, 1869 o (Beccaloni 2007)
C. parishi Rehn, 1918 o o o (Bruijning 1959; Hebard 1926; Perez 1988; Princis 1963)
C. splendida Hebard, 1926 o o o (Bonfils 1975; Bruijning 1959; Hebard 19261929; Princis 1963)
C. strigifrons Hebard, 1926 o o (Bruijning 1959; Hebard 1926; Princis 1963)
C. stylata Hebard, 1926 o o (Bruijning 1959; Hebard 1926; Princis 1963)
C. surinama Saussure, 1868 o o (Bruijning 1959; Hebard 1926; Princis 1963)
C. vitrifera (Walker, 1868) o o o (Bruijning 1959; Hebard 1926, 1929)
C. vivida Rocha e Silva Albuquerque & Gurney, 1962 o (Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
Dendroblatta callizona Rehn, 1928 o o (Princis 1963; Princis and Kevan 1955; Bruijning 1959; Rehn 1928)
D. cnephaia Hebard, 1926 o o (Bruijning 1959; Hebard 1926; Princis 1963)
D. insignis Hebard, 1926 o o (Bruijning 1959; Hebard 1926; Princis 1963)
D. coppenamensis Bruijning, 1959 o (Bruijning 1959; Princis 1963)
Euphyllodromia atropos Rehn, 1928 o o o (Bonfils 1975; Bruijning 1959; Princis 1963; Rehn 1928)
E. aurora Rehn, 1932 o o (Bonfils 1975; Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
E. chopardi Hebard, 1921 o o o o (Bruijning 1959; Hebard 1921b; Pellens and Grandcolas 2008; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
E. elegans (Shelford, 1907) o o (Bonfils 1975; Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Rehn 1928; Rocha e Silva Albuquerque and Gurney 1962)
E. fasciatella (Saussure, 1868) o o (Bruijning 1959; Hebard 1929; Princis 1963; Rehn 1906)
E. hystrix (Saussure, 1869) ? ? ? (Bonfils 1987; Perez 1988; Princis 1963; Hebard 1929)
E. literata (Burmeister, 1838) o o o o (Bruijning 1959; Hebard 1921b, 1926; Pellens and Grandcolas 2008; Princis 1963; Walker 1868)
E. marowijnensis Bruijning, 1959 o (Bruijning 1959; Princis 1963)
E. obscura (Saussure, 1873) o (Rehn 1906)
E. pavonacea (Rehn, 1903) o o o o (Bonfils 1975; Bruijning 1959; Pellens and Grandcolas 2008; Princis 1963; Rehn 1903, 1906; Rocha e Silva Albuquerque and Gurney 1962)
E. prona (Rehn, 1906) o (Bruijning 1959; Princis 1963; Rehn 1906)
E. variegata (Walker, 1868) o o o (Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
Imblattella litosoma (Hebard, 1926) o o o (Bonfils 1975; Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
Leuropeltis atopa Hebard, 1921 o (Bruijning 1959; Hebard 1921b1926)
Leuropeltis gurneyi Rocha e Silva Albuquerque, 1964 o (Bonfils 1987; Perez 1988; Princis 1963)
Lophoblatta arawaka Hebard, 1929 o o (Bonfils 1975, 1987; Bruijning 1959; Perez 1988; Princis 1963; Princis and Kevan 1955; Hebard 1929)
L. brevis Rehn, 1937 o o o (Bruijning 1959; Perez 1988; Princis 1963; Rehn 1937b)
L. pellucida (Burmeister, 1838) o o o (Pellens and Grandcolas 2008; Princis 1963)
Macrophyllodromia nigrigena Hebard, 1926 o o o (Bruijning 1959; Hebard 1926; Princis 1963)
Nahublattella aristonice Hebard, 1926 o o (Bonfils 1975; Hebard 1926; Princis 1963)
N. incompta (Hebard, 1926) o (Bonfils 1975; Bruijning 1959; Hebard 1926)
Neoblattella adspersicollis (Stål, 1860) o (Bruijning 1959; Hebard 1921b; Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
N. binodosa Hebard, 1926 o o (Bruijning 1959; Hebard 1926; Princis 1963)
N. elegantula Rocha e Silva Albuquerque, 1964 o (Perez 1988; Princis 1963; Lopes and de Oliveira 2004)
N. guianae Hebard, 1929 o o o (Bonfils 1975; Hebard 1929; Lopes and de Oliveira 2004; Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
N. longior Hebard, 1926 o o (Bruijning 1959; Hebard 1926; Lopes and de Oliveira 2004; Princis 1963)
N. nodipennis Hebard o o (Bruijning 1959; Hebard 1926; Princis 1963)
N. picta Rocha e Silva Albuquerque & Gurney, 1962 o (Pellens and Grandcolas 2008; Rocha e Silva Albuquerque and Gurney 1962)
N. poecilops Hebard, 1926 o o (Bruijning 1959; Hebard 1926; Lopes and de Oliveira 2004; Princis 1963)
N. titania (Rehn, 1903) o o o (Bruijning 1959; Hebard 1926; Princis 1963; Rehn 1903)
N. unifascia Hebard, 1926 o (Bruijning 1959; Hebard 1926; Lopes and de Oliveira 2004; Princis 1963)
Plectoptera pulicaria Saussure & Zehntner, 1893 o o (Bruijning 1959; Hebard 1926; Princis 1963)
Riatia distincta (Hebard, 1926) o o (Bruijning 1959; Hebard 1926)
R. fulgida (Saussure, 1862) o o (Bruijning 1959; Rehn 1906; Princis 1963)
R. orientis (Hebard, 1926) o o o o (Bruijning 1959; Hebard 1926; Princis 1963; Perez 1988; Princis and Kevan 1955)
R. stylata (Hebard, 1926) o o (Bonfils 1975; Bruijning 1959; Hebard 1926)
R. variegata Rocha e Silva Albuquerque & Aguiar, 1976 o (Perez 1988)
R. venezuelana Rocha e Silva Albuquerque, 1964 o (Perez 1988; Princis 1963)
Sciablatta galibi Hebard, 1926 o (Bruijning 1959; Hebard 1926)
S. poecila Hebard, 1921 o o (Bruijning 1959; Hebard 1921b; Princis 1963)
Supella longipalpa (Fabricius, 1798) o o o o o o o o (Bonfils 1987; Bruijning 1959; Hebard 1929; Perez 1988; Princis 1963; Princis and Kevan 1955)
Tairella carinatifrons Hebard, 1926 o o (Hebard 1926; Princis 1963)
Trioblattella callosoma (Hebard, 1926) o o o (Bonfils 1975; Bruijning 1959; Hebard 1926; Pellens and Grandcolas 2008; Princis 1963; Rocha e Silva Albuquerque and Gurney 1962)
Lamproblattidae
Lamproblattinae
Lamproblatta albipalpus Hebard, 1919 ? ? ? o (Hebard 1931; Pellens and Grandcolas 2008; Princis and Kevan 1955; Rehn 1930; Rocha e Silva Albuquerque and Gurney 1962)
L. ancistroides Rehn, 1930 ? ? ? (Perez 1988; Princis 1963)
Table 2.
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Allometry of new records of cockroaches from Guyana reported in the text. All values are lengths reported in millimeters. NA – refers to specimens which are damaged and therefore cannot be measured or refer to specimens for which the listed measurement does not apply. Specimens with asymmetrical styli have lengths of both right (R.) and left (L.) styli given. When possible, broken specimens had relevant measurements estimated (est.) by piecing together damaged parts or extrapolating visually.

Morphological feature Eublaberus distanti Eublaberus sp. Neorhicnoda maronensis Colapteroblatta surinama Epilampra opaca Epilampra sodalis Thanatophyllum akinetum
Adult ♂ Adult ♂ Adult ♂ Adult ♂ Adult ♂ Adult ♀ Adult ♂ Adult ♀ Adult ♀ Adult ♂
DEKBO0843 DEKBO0842 DEKBO0844 DECBA0615 DECBA0703 DECBA1810 DECBA1845 DECBA1847 DECBA0401 DECBA0611
Head Greatest width 6.5 6.5 6.8 4.5 3.0 3.4 3.3 3.8 5.0 3.8
Medial length 7.5 7.0 7.1 5.4 3.1 3.4 3.1 4.5 5.5 3.8
Pronotum Greatest width 17.5 15.5 15.0 12.9 6.0 6.5 6.0 8.0 10.0 10.0
Medial length 11.0 10.5 10.0 8.8 4.7 4.5 4.6 6.5 7.8 7.0
Leg Front Femur 6.0 6.0 5.7 5.0 2.2 2.2 3.0 3.5 4.8 4.0
Tibia 2.8 4.5 3.9 2.2 1.4 1.6 2.0 2.5 2.5 2.2
Middle Femur 9.5 8.3 8.0 6.3 2.3 2.7 4.5 5.5 5.6 5.0
Tibia 7.0 7.0 6.0 4.5 1.8 1.9 4.0 4.0 5.5 4.9
Hind Femur 10.0 9.0 8.0 6.7 3.1 2.7 5.8 6.0 7.0 5.8
Tibia 13.0 11.0 10.0 8.5 3.7 3.4 7.9 9.2 10.0 8.0
Cerci length 3.0 3.3 2.8 1.5 0.6 0.5 3.0 2.2 3.3 1.2
Styli length 0.8 0.8 1.0 0.5 0.3 NA 0.5 NA NA NA
Tegminal length 39.5 NA NA NA 10.0 2.0 20.0 24.5 28.0 (est.) 22.0
Total body length 43.5 44.0 46.0 34.0 15.7 19.3 20.5 25.0 31.0 26.0
Morphological feature Anaplecta parviceps Anisopygia decora Ischnoptera atrata Xestoblatta agautierae Nyctibora dichropoda Chorisoneura inversa Dendroblatta callizona Calhypnorna sp.
Adult ♂ Adult ♀ Adult ♂ Adult ♂ Adult ♂ Adult ♀ Adult ♂ Adult ♂ Adult ♀ Juvenile
DECBA1843 DEKBO0504 DECBA2153 DEKBO0594 DEKBO0827 DEKBO0826 DECBA0302 DECBA1782 DECBA0805 DECBA1802
Head Greatest width 1.0 1.8 3.1 3.5 2.6 2.4 4.9 1.6 2.4 1.5
Medial length 1.1 1.9 3.8 4.2 3.3 3.0 6.0 1.5 2.8 1.3
Pronotum Greatest width 1.6 3.9 5.9 6.7 5.0 5.3 11.0 2.9 4.9 1.7
Medial length 1.1 2.4 4.0 4.8 3.4 3.8 6.0 1.8 3.0 1.6
Leg Front Femur 1.0 1.8 3.1 3.0 2.8 3.1 6.0 1.5 2.8 1.1
Tibia 0.7 1.0 2.2 2.0 1.7 2.0 4.0 1.0 1.9 0.7
Middle Femur 1.4 2.2 4.0 3.8 3.5 4.0 7.6 ? 3.4 1.4
Tibia 1.2 1.8 4.1 3.6 3.4 3.5 7.0 ? 2.8 1.0
Hind Femur NA 2.5 5.2 4.3 4.0 4.6 9.0 2.3 4.3 1.4
Tibia NA 2.9 6.0 6.1 6.0 5.1 12.0 2.7 4.6 1.3
Cerci length NA 1.6 3.6 3.0 2.3 2.3 7.0 1.6 3.3 0.6
Styli length 0.1 NA 0.6 (L.) 0.9 (R.) 0.5 (L.) 0.7 (R.) NA NA 2.0 (L.) 1.2 (R.) 0.6 NA 0.2
Tegminal length 3.7 1.3 22.0 21.8 10.0 10.0 36.0 7.4 9.8 NA
Total body length 4.7 8.9 21.8 21.3 17.0 (est.) 15.0 37.0 7.8 13.8 7.3

Subfamily: Blaberinae

Eublaberus distanti (Kirby, 1903)

Materials

Adult ♂.

Voucher number: DEKBO0843.

Collection locale. Karanambu Ranch, Rupununi, Guyana.

GPS: 3°45'2.2"N, 59°18'31.2"W.

Date: 7 – June – 2013.

Collectors. Dominic A. Evangelista, Oswin Ambrose, Susan George, and Megan M. Wilson.

Collection/ecological information

This specimen was collected in the bathroom of one of the cabins at the camp of Karanambu Ranch.

Known geographic distribution

Guatemala, Costa Rica, Panama, Colombia, Trinidad and Tobago, French Guiana, Suriname, Guyana and Brazil

Neorhicnoda maronensis (Hebard, 1921)

Materials

Adult ♂ Figure 1.

Voucher number: DECBA0615.

GenBank accession number: KF155090.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Date: 02 – January – 2012.

Collectors. Dominic A. Evangelista, Ian Biazzo, Joseph A. Evangelista, Paul Frandsen, William R. Kuhn, and Jessica L. Ware.

Collection/ecological information

This specimen was caught in a pitfall trap baited with beer in an uplands secondary forest.

Morphological identification

This specimen agrees with the description of the male genitalia in Grandcolas (1992b).

Known geographic distribution

Guyana (new record), Suriname, and French Guiana.

Figure 1. 

Neorhicnoda maronensis adult male (DECBA0615).

Subfamily: Epilamprinae

Colapteroblatta surinama (Saussure, 1868)

Materials

Adult ♂ Figure 2E.

Voucher number: DECBA0703.

GenBank accession number: KF155029.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Date: 05 – August – 2011.

Collectors. Dominic A. Evangelista, Ian Biazzo, Manpreet K. Kohli, Melissa Sanchez-Herrera, Nicole Sroczinski, and Jessica L. Ware.

Collection/ecological information

This specimen was collected in an uplands secondary forest from within a rotting vine.

Morphological identification

This specimen was identified using Roth and Gutierrez (1998).

Adult ♀ Figure 2D.

Voucher number: DECBA1810.

GenBank accession number: KF155126.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Date: 20 – August – 2011.

Collectors. Dominic Evangelista and William R. Kuhn.

Collection/ecological information

This specimen was collected in an uplands secondary forest from within an arboreal bromeliad.

Morphological identification

This specimen was identified using Roth and Gutierrez (1998).

Juvenile Figure 2A–C.

Voucher number: DECBA1811.

GenBank accession number: KF155112.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Date: 17 – August – 2013.

Collectors. Dominic Evangelista and William R. Kuhn.

Collection/ecological information

This specimen was collected on vegetation in an uplands secondary forest.

Morphological identification

This specimen was associated to its adult morph using barcodes in Evangelista et al. (2014). The overall coloration of the juvenile specimens of this species is more similar to that of C. darlingtoni Roth & Gutiérrez, 1998 and C. rehni Roth & Gutiérrez, 1998 than to that of the adults of its own species (see Figure 2).

Genetic information and evolutionary placement. All three specimens have nearly identical cytochrome oxidase I (COI) haplotypes but their position could not be determined relative to other cockroach species with the data evaluated by Evangelista et al. (2014).

Known geographic distribution

Guyana, Suriname.

Figure 2. 

Colapteroblatta surinama. A–C Juvenile (dorsal aspect, pronotum, ventral aspect of head) D Adult female, dorsal aspect E Adult male, dorsal aspect. Photos not to scale.

Epilampra opaca Walker, 1868

Materials

Adult ♂ Figure 3B.

Voucher number: DECBA1845.

GenBank accession number: KF155125.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Date: 18 – August – 2012.

Collectors. Dominic A. Evangelista and William R. Kuhn.

Adult ♀

Voucher number: DECBA1847.

GenBank accession number: KF155124.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29"N, 58°13"W.

Date: 5 – August – 2011.

Collectors. Dominic A. Evangelista, Ian Biazzo, Manpreet K. Kohli, Melissa Sanchez-Herrera, Nicole Sroczinski and Jessica L. Ware.

Collection/ecological information

The adult male (DECBA1845) was collected at a light trap. Adult female (DECBA1847) was collected by hand in the leaf litter by a small pond. Most late instar individuals of this species were also collected at the edge of this pond and some were collected in pitfall traps baited with beer. Early instar individuals of this species were collected from within bromeliads.

Genetic information

The two adult specimens reported here, as well as three juvenile individuals (Voucher and accession numbers: DEDSM0141 – KF155097, DECBA1706 – KF155089, DECBA0205 – KF155088) have identical COI barcodes and are sister to each other on the tree. However, other individuals (similar to E. opaca) included in the analysis (Voucher and accession numbers: DECBA0214 – KF155018, DECBA0216 – KF155017, DECBA0606 – KF155013, DECBA1101 – KF155016, DECBA0605 – KF155012, DECBA0608 – KF155015) are more genetically diverse and are only supported as monophyletic by 63% bootstrap support.

Morphological identification

There is a great deal of intraspecific variation in the morphology of this species. Early instar nymphs are difficult to associate to later instar nymphs, all of which are entirely unrecognizable from the adults (Figure 3A–C). Furthermore, there is variation within instars, where some later instar nymphs will appear to have a medially divided subgenital plate and others do not. This trait was not found to correlate with genetic differences (Evangelista et al. 2014).

The external morphology of this species provides little assistance in its identification, as most descriptions of it emphasize coloration that is both subtle and variable. However, the allometry of our specimens (Table 2) agree with those of Bruijning (1959). A definitive identification was made by comparison of genital morphology using Roth (1970b), particularly in the shape of the prepuce.

Known geographic distribution

Venezuela (unverified), Guyana, Suriname, French Guiana and Brazil

History and synonymy.Walker (1868) first described both E. opaca Walker, 1868 and E. substrigata Walker, 1868. Hebard (1926) noted that E. opaca Walker, 1868 has a highly variable morphology and may be synonymous with a few other Epilampra (e.g. E. conferta Walker, 1868 syn. stigmosa Giglio-Tos, 1898, E. maculicollis (Serville, 1838)). This variability is evident in the work published by Roth (1970b), which shows a great deal of variation in the genital morphology, in particular for L2d. Although it is not clear if anyone before Roth (1970b) examined the genitalia of these two species, both Shelford (1910) and Princis (1963) considered them to be synonyms. Roth’s (1970b) photos show that, although each species is intraspecifically variable, both are distinct and separable by the shape of L2d and the prepuce. Roth himself acknowledged this and considered the species as being separate. Although we have not examined any E. substrigata Walker, 1868, we agree with Roth’s interpretation of the morphology and follow from his precedence in considering these separate (see Roth 1970b for the opinions of Princis and Gurney on the status of these two species).

Figure 3. 

Epilampra opaca. A Early juvenile instar (DEDSM0141) B Late juvenile instar (DECBA1706) C Adult (DECBA1845). Scale bars approximate 1 mm.

Epilampra sodalis Walker, 1868

Materials

Adult ♂ Figure 4A.

Voucher number: DECBA0401.

GenBank accession number: KF155063.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Date: 31 – July to 6 – August – 2011.

Collectors. Dominic A. Evangelista, Ian Biazzo, Manpreet K. Kohli, Melissa Sanchez-Herrera, Nicole Sroczinski, and Jessica L. Ware.

Collection/ecological information

This specimen was collected at a light trap.

Morphological identification

This specimen agrees with the description the synonym E. cinnamomea (Hebard 1926).

Juvenile

Voucher number: DECBA1702.

GenBank accession number: KF155068.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Date: 27 – December – 2011.

Collectors. Dominic A. Evangelista, Ian Biazzo, Joseph A. Evangelista, Paul Frandsen, William R. Kuhn and Jessica L. Ware.

Juvenile

Voucher number: DECBA1701.

GenBank accession number: KF155069.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Date: 10 – January – 2012.

Collectors. Dominic A. Evangelista, Ian Biazzo, Joseph A. Evangelista, Paul Frandsen, William R. Kuhn and Jessica L. Ware.

Collection/ecological information

Both of these juvenile specimens were collected at the edge of a small pond.

Genetic information and evolutionary placement. These three specimens (previous reported as “Blaberidae sp. 04”) were placed in the same clade with 90% bootstrap support.

Known geographic distribution

Venezuela, Guyana (new record), Suriname, French Guiana and Brazil

Figure 4. 

Epilampra sodali. A Adult male dorsal view (DECBA0401) B Juvenile dorsal view (DECBA2163). Add scale bar.

Subfamily: Zetoborinae

Thanatophyllum akinetum Grandcolas, 1991

Materials

Adult ♂ Figure 5.

Voucher number: DECBA0611.

GenBank accession number: KF155066.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Date: 28 – December – 2011.

Collectors. Dominic A. Evangelista, Ian Biazzo, Joseph A. Evangelista, Paul Frandsen, William R. Kuhn and Jessica L. Ware.

Collection/ecological information

This specimen was collected by hand on vegetation in an uplands secondary forest.

Morphological identification

This specimen agrees with the description of the head and male genitalia of Grandcolas (1990).

Known geographic distribution

Guyana (new record) and French Guiana.

Figure 5. 

Thanatophyllum akinetum adult male (DECBA0611). A Dorsal view B Ventral view.

Family: “Ectobiidae”

Subfamily: Anaplectinae

Anaplecta parviceps (Walker, 1868)

Materials

Adult ♂ Figure 6.

Voucher number: DECBA1843.

GenBank accession number: KF155137.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Date: 16 – August – 2012.

Collectors. Dominic A. Evangelista and William R. Kuhn.

Collection/ecological information

This specimen and another adult male (Voucher number: DECBA1841) were collected at a light trap near the camp of CEIBA Biological Station on the date noted above. A juvenile of this species was also collected at the same locale, found crawling through a benab between 21 and 24 of August 2012 (Voucher number: DECBA1842).

Morphological identification

The specimen agrees with the description of the synonym A. insignis of Hebard (1926). Other specimens were identified by comparison with specimen DECBA1843.

Genetic information and evolutionary placement. The COI barcodes of this specimen (previously reported as “Blattodea sp. 18”) falls sister to another specimen identified as Anaplecta sp. (previously reported as “Ectobiidae sp. 04”; Voucher number: DEDSM0111; GenBank accession number: KF155041) but with 25% bootstrap support. This other species is not reported in this paper due to an uncertainty in specific identification.

Known geographic distribution

Guyana, Suriname, French Guiana, Brazil (Rio de Janeiro), Brazil (Pará), and Brazil (Amapá).

Figure 6. 

Anaplecta parviceps adult male (DECBA1843).

Subfamily: Blattellinae

Anisopygia decora Hebard, 1926

Materials

Adult ♀ Figure 7.

Voucher number: DEKBO0504.

Collection locale. Capuchin Trail, Karanambo Ranch, Rupununi, Guyana.

GPS: 3°44'43.70"N, 59°18'51.88"W.

Date: 10 – June – 2013.

Collectors. Dominic A. Evangelista, Oswin Ambrose, Susan George, and Megan M. Wilson.

Collection/ecological information

This specimen was collected by hand in an undisturbed forested area. This is the first record of this specimen from Guyana.

Morphological identification

This specimen was identified by comparison with Hebard’s description (1926).

Known geographic distribution

Guyana (new record) and French Guiana.

Figure 7. 

Anisopygia decora adult female (DEKBO0504).

Ischnoptera atrata Hebard, 1916

Materials

Adult ♂.

Voucher number: DECBA2153.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Collection date: December – 2011.

Collectors. Dominic Evangelista, Ian Biazzo, Joseph A. Evangelista, Paul Frandsen, William R. Kuhn, and Jessica L. Ware.

Collection/ecological information

This specimen was collected in a pitfall trap baited with beer in an uplands secondary forest area.

Adult ♂ Figure 8.

Voucher number: DEKBO0594.

Collection locale. Karanamabu Ranch, Rupununi, Guyana.

GPS: 3°45'0.1"N, 59°18'53.7"W.

Collection date: 10 – June – 2013.

Collectors. Dominic A. Evangelista, Oswin Ambrose, Susan George, and Megan M. Wilson.

Collection/ecological information

This specimen was collected in a pitfall trap baited with beer in a forest proximal to the Rupununi River.

Morphological identification

Both specimens mostly agree with the description and figures of Hebard (1916). However, there are slight differences in the supra-anal plate when compared to Hebard’s illustration. The white region on the SA plate of our specimen is slightly larger than in Hebard’s illustration. It is possible that this is a different species than that described by Hebard, but this cannot be fully determined without a full phylogenetic treatment of sexual morphology and genetic information of individuals from both Trinidad and Guyana.

Known geographic distribution

Trinidad and Tobago, and Guyana

Figure 8. 

Ischnoptera atrata adult male (DEKBO0594). A Dorsal view B Ventral view.

Xestoblatta berenbaumae Evangelista, Kaplan, & Ware, sp. n.

http://zoobank.org/0DCFF043-F783-49E4-8576-4A2AD402AF82

Authors of description

Evangelista, Kaplan, & Ware.

Holotype

Adult ♂ Figure 9B–E, G.

Voucher number: DECBA2109.

Type locality. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Collection date: 17 to 18 – August – 2012.

Collectors. Dominic A. Evangelista and William R. Kuhn.

Type information

The holotype specimen is stored in ethanol with genitalia in a separate ethanol vial and is deposited at the Center for Biodiversity at the University of Guyana.

Collection/ecological information

This specimen was collected in a pitfall trap baited with beer and fruit in an uplands secondary forest in CEIBA Biological Station.

Morphological identification

This specimen was identified as Xestoblatta Hebard, 1916 by the position of the hooked phallomere (left), the presence of the external modification of the tergum as part of the dorsal tergal gland (Figure 9A), incomplete rami on the ulnar vein of the hind wing (Figure 9I) and the spination (type A) on the ventro-anterior margin of the fore-femur.

Holotype morphological description

Head uniformly colored a deep mahogany. Clypeus pale buffy. Ocellar spots easily distinguishable, smaller than antennal pits and white. Head otherwise without distinguishing features. Ocellar spots slightly closer together than eyes. Facial grooves on lateral most edge. See Figure 9H for a representative photo of the head.

Pronotum a uniformly reddish mahogany color (Figure 10A). Medial expansion on posterior margin of pronotum is barely noticeable. Ventral margin of pronotum not lined with hairs. Anterior margin of pronotum significantly conformed around the head. Leg coloration deep orange amber. Coxae with some diffuse black regions. Ventro-anterior margin of fore-femur with 14 (left) or 13 (right) spines decreasing in size from basal to apical, one slightly larger pre-apical spine and one large apical spine (16 total left, 15 total right). Ventro-posterior margin of forelimbs with 4 large spines and 1 apical spine. Ventro-anterior margin of middle leg has seven large spines and one apical spine. Middle leg also with one large genicular spine. Hind leg ventro-anterior margin has six spines, one apical spine, and one genicular spine. Pulvilli present on all tarsomeres. Arolia present but not surpassing the tips of the pretarsal claws. Claws symmetrical and unspecialized.

Ulnar vein with three incomplete rami and three complete rami (Figure 9I). Tegmina reddish mahogany with small patch of white under the base of the subcostal vein.

Supra-anal plate subtriangular with a blunt tip from dorsal view. Left paraproct modified into a tri-dentate spine (Figure 9F; bi-dentate in some other specimens). Sub-genital plate has both styli highly modified (Figure 9F, G). The right stylus is projecting dorso-medially from posterior margin, curving back posteriorly and terminating in a shape reminiscent of a bifurcated serpentine tongue. Left stylus projecting dorsally, shorter than right stylus and tipped with a small, translucent, irregularly shaped ball (Figure 9F, G).

Left phallomere (Figure 9B, C) hooked in apical third. (Hooked phallomere is about 1.5 mm long). Medial phallomere (Figure 9D) approximately three times the length of the left phallomere, roughly uniform width, and a slight slender curve in the posterior end. R2c (Figure 9E) divided into two sclerites that form dual concave cups that meet dorsally.

Dorsal modification of terga as part of the dorsal tergal gland. Modification represented by a small patch of hairs with a concave semi-circular modification of the margin of the segment anterior to the gland. See Figure 9A for an illustration of a representative dorsum.

Medium sized hairs (~ 2 mm) covering entire body roughly uniformly, yet sparsely.

Other adult male paratypes

Voucher numbers: DECBA1967, DECBA0801, DECBA1958, DECBA2182, DECBA2092, DECBA2039

Collection/ecological information

All additional male individuals reported here were collected in leaf litter pitfall traps baited with beer at various locations (dryer secondary uplands forest and wet primary lowlands forest) in CEIBA biological station.

Adult female paratype morphological description

Voucher number: DECBA2074.

Head slightly darker in color than male with a more reflective surface. Other features of head similar to male.

Description of legs similar or identical to that of male with the following spination on the ventro-anterior margin of fore-femur: 13 (left) and 12 (right) spines decreasing in size from basal to apical, two larger preapical spines and one large apical spine (16 total left and 15 total right). Ventro-posterior margin of fore-femur four large spines and one apical spine. Ventro-anterior margin of mid-leg with seven large spines, one apical spine, and one genicular spine. Ventro-anterior margin of hind-leg with five large spines, one apical spine, and one genicular spine.

Tegmina and wings reduced and not reaching end of abdomen. Three incomplete and three complete rami on ulnar vein. Ulnar vein very faint in the reduced wings of the female (Figure 10B; Table 3).

Pronotum matches description of the male.

Subgenital plate slightly more abbreviated than in male. Paraprocts simple and unspecialized. Sub-genital plate simple and symmetrical.

Other adult female paratypes

Voucher numbers: DECBA1787, DECBA1791, DECBA1792, and DECBA1793

Collection/ecological information

All additional female individuals reported here were collected in leaf litter pitfall traps baited with beer in an uplands secondary forest at CEIBA biological station.

Summary of female morphology

All individuals match the description of the above female and have the following spination on the vento-anterior margin of the fore-limb: 13 spines decreasing in size from basal to apical, one or two slightly larger preapical spines and one large apical spine making a total of 15 or 16 spines.

Juvenile paratypes

Voucher numbers: DECBA1788, DECBA1789, DECBA1790, DECBA1796.

Collection/ecological information

All additional juvenile individuals reported here were collected in leaf litter pitfall traps baited with beer in an uplands secondary forest at CEIBA biological station.

Summary of juvenile morphology

Juveniles are apterous and largely match the morphology of adults except for in the following. Simple styli present on the subgenital plate in some individuals but are short and abbreviated. Spines on ventro-anterior margin of forelimb are as follows: 12 to 14 spines decreasing in size basally to apically, one or two slightly larger preapical spines and one large apical spine making a sum total of 15 or 16 total spines.

Molecular data and evolutionary placement

Vouchers numbers and GenBank accession numbers: DECBA1791 – KF155114, DECBA1789 – KF155105, DECBA0801 – CBA0801, DECBA1827 – KF155103, DECBA1826 – KF155107, DECBA1814 – KF155115. The clade containing the above haplotypes (formerly reported as “Blattodea sp.1”) is supported by 96% bootstrap support and the haplotypes are nearly identical.

Diagnostic features of X. berenbaumae

The morphology of modified styles on the subgenital plate is the most useful trait for discerning this species with other Xestoblatta Hebard, 1916. The simple dorsal tergal gland, shape of the paraprocts (left modified into a tri-dentate or bi-dentate spine), and morphology of the internal genital sclerites of the male are also useful in identifying this species. Unfortunately the adult females and juveniles are largely lacking obvious identifying characteristics and there may be errors made in associating juveniles to the adults without the use of genetic information.

Etymology

We give this species the specific epithet “berenbaumae” in honor of the esteemed entomologist, Dr. May Berenbaum, who has made huge contributions to entomology through scientific products, service and public outreach.

Known geographic distribution

Guyana

Figure 9. 

Xestoblatta berenbaumae sp. n. A Dorsal view of abdomen showing the simple tergal gland (DECBA2023) B, C Hooked left phallomere D Ventral medial phallomere (L2vm) E Right phallomere. R2e – external sclerite, R2i – internal sclerite, R2c – cleft sclerite F Posterior view of abdomen showing paraprocts and subgenital plate. RS-right stylus, LS-left stylus with small translucent ball at tip, LP-left paraproct reduced and specialized with polydentate spine, RP-unspecialized right paraproct. Illustration is a composite of multiple individuals G Dorsal view of sub-genital plate (DECBA1967) H Head of adult male I Hindwing (DECBA0801). Photos and illustrations contributed by Kayla Kaplan and Dominic A. Evangelista.

Figure 10. 

Xestoblatta berenbaumae sp. n. A Adult male dorsal view (DECBA2182) B Adult female dorsal view (DECBA2210).

Table 3.
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Allometry of Xestoblatta berenbaumae sp. n. All values are lengths reported in millimeters.

Morphological feature Xestoblatta berenbaumae sp. n.
Adult ♂ (HT) Adult ♂ Adult ♂ Adult ♂ Adult ♂ Adult ♂ Adult ♂ Adult ♀ Adult ♀ Adult ♀ Adult ♀
DECBA2109 DECBA1967 DECBA0801 DECBA1958 DECBA2182 DECBA2092 DECBA2039 DECBA1787 DECBA1974 DECBA1793 DECBA2074
Head Greatest width 2.7 3.0 3.0 2.9 3.0 2.8 2.9 3.1 3.0 3.0 3.1
Medial length 3.6 3.8 3.8 3.8 3.9 3.5 3.6 4.0 4.0 4.0 3.7
Pronotum Greatest width 5.3 6.0 6.0 5.6 4.9 5.3 5.3 5.9 4.7 5.9 4.1
Medial length 4.0 4.0 4.4 4.0 4.5 4.0 4.0 4.8 5.9 4.3 5.6
Leg Front Femur 3.0 3.5 4.0 4.0 3.3 3.2 4.0 3.0 3.6 3.5 3.0
Tibia 2.0 2.0 2.5 2.0 2.5 2.0 2.4 2.0 2.6 2.3 2.0
Middle Femur 4.0 4.5 4.2 4.0 4.7 4.0 4.8 4.2 4.3 4.4 4.2
Tibia 3.8 3.7 4.0 4.0 3.7 4.0 4.4 4.0 4.0 3.8 4.0
Hind Femur 4.9 5.0 5.0 4.5 5.0 4.8 5.4 5.7 5.0 4.9 5.0
Tibia 6.0 6.1 6.0 5.6 6.0 6.1 6.0 6.2 6.1 6.0 6.3
Cerci length 2.8 3.0 NA 2.3 2.5 3.2 3.0 3.0 2.8 2.4 NA
Tegminal length 13.5 14.0 14.0 14.0 13.3 14.0 13.8 10.1 10.0 10.0 9.2
Total body length NA NA NA 17.5 15.4 16.0 18.0 18.7 17.0 18.2 (est.) NA

Xestoblatta agautierae Grandcolas, 1992

Materials

Adult ♂.

Voucher number: DEKBO0827.

Collection locale. Wilson’s pond trail (Honey pond trail), Karanambu Ranch, Rupununi, Guyana.

GPS: 3°44'42.36"N, 59°19'15.21"W.

Collection date: 10 – June – 2013.

Collectors. Dominic A. Evangelista, Oswin Ambrose, Susan George, and Megan M. Wilson.

Adult ♀.

Voucher number: DEKBO0826.

Collection locale. Forest Island “Darwin”, Karanambu Ranch, Rupununi, Guyana.

GPS: 3°47'47.62"N, 59°22'6.77"W.

Collection date: 14 – June – 2013.

Collectors. Dominic A. Evangelista, Oswin Ambrose, Susan George, and Megan M. Wilson.

Collection/ecological information

Both specimens above were collected in pitfall traps baited with beer in the forests of the Rupununi savannah.

Morphological identification

The left genital phallomere, right genital phallomere, absence of a dorsal tergal gland and body coloration match closely with the species description (Grandcolas 1992a). The styli differ slightly to the illustrations in the original description in that the left stylus of our specimen is shorter and originates more medially. The female was associated to the male by comparison of gross morphology and body coloration. See Figure 11 for photos of adult male and adult female.

Collection/ecological information for other specimens not reported here

We collected many individuals of this species from most forested areas surrounding Karanambu Ranch. We collected only one individual of this species in a similar trap at the edge of a forest, near open savannah. We found this species and X. berenbaumae sp. n. to be extremely abundant in their respective localities (>100 individuals of each collected). However, both are previously unreported for Guyana. We believe this can be attributed to the fact that we used beer and fermenting fruit to bait out pitfall traps. As Gurney (1939) reports, Xestoblatta Hebard, 1916 were rare in collections until the contributions of an entomologist trapping fruit flies in Panama. We can speculate that these fruit flies were also collected with some sort of aromatic bait (as this is common for fruit fly trapping) that attracted the Xestoblatta Hebard, 1916 as by-catch.

Known geographic distribution

Guyana (new record) and French Guiana.

Figure 11. 

Xestoblatta agautierae.A Adult male dorsal view (DEKBO0442) B Adult female dorsal view (DEKBO0445).

Subfamily: Nyctiborinae

Nyctibora dichropoda Hebard, 1926

Materials

Adult ♂ Figure 12.

Voucher number: DECBA0302.

GenBank accession number: KF155061.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Collection date: 29 – July – 2011.

Collectors. Dominic A. Evangelista, Ian Biazzo, Manpreet K. Kohli, Melissa Sanchez-Herrera, Nicole Sroczinski and Jessica L. Ware.

Collection/ecological information

This specimen was collected in the leaf litter.

Morphological identification

This specimen matches the illustration and description by Hebard (1926) in the “striking pale” coloration on the surfaces of the tibiae, the definitive character for this species. However, the male we have is much larger than that which he described. It is matching in all other ways.

Molecular identification

The COI barcodes of this specimen are close to an adult female (Voucher number: DECBA0235; GenBank accession number: KF155062) and juvenile specimen (Voucher number: DECBA0104; GenBank accession number: KF155024) of Nyctibora. Based on both genetic distance and morphological dissimilarity, these individuals are likely members of a separate species. We do not report them further here.

Known geographic distribution

Guyana (new record), Suriname and French Guiana.

Figure 12. 

Nyctibora dichropoda adult male (DECBA0302). A Dorsal view B Ventral view.

Subfamily: Pseudophyllodromiinae

Chorisoneura inversa Hebard, 1926

Materials

Adult ♂ Figure 13.

Voucher number: DECBA1782.

GenBank accession number: KF155130.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Date: 7 to 11 – August – 2013.

Collectors. Dominic A. Evangelista, Ian Biazzo, Manpreet K. Kohli, Melissa Sanchez-Herrera, Nicole Sroczinski and, Jessica L. Ware.

Morphological identification

This individual was recognizable when comparing to the description of Hebard (1926) and the presence of the anteriorly pointing “V” shape on pronotum.

Genetic information and evolutionary placement

As discussed below, this specimen was placed near Calhypnorna Saussure & Zehntner, 1893 with 75% bootstrap support.

Known geographic distribution

Guyana, Suriname, French Guiana and Brazil.

Figure 13. 

Chorisoneura inversa adult male (DECBA1782). A Dorsal view B Ventral view of head.

Dendroblatta callizona Rehn, 1928

Materials

Adult ♀ Figure 14.

Voucher number: DECBA0805.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'57.75"N, 58°13'7.28"W.

Date: 14 – August – 2011.

Collectors. Dominic A. Evangelista, Ian Biazzo, Manpreet K. Kohli, Melissa Sanchez-Herrera, Nicole Sroczinski, and Jessica L. Ware.

Juvenile

Voucher number. DECBA0901.

GenBank accession number: KF155067.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'57.75"N, 58°13'7.28"W.

Date: 13 – August – 2011.

Collectors. Dominic A. Evangelista, Ian Biazzo, Manpreet K. Kohli, Melissa Sanchez-Herrera, Nicole Sroczinski, and Jessica L. Ware.

Collection/ecological information

Both of these specimens were collected in a cup baited with beer placed in the canopy. The cup was tied to the trunk of a tree 13.8 meters above the ground. The tree chosen was close to a swampy primary forest area and on the edge of grassy hillside (most likely a plot that had been burned in the past). There were traps placed in the same tree at other heights but both individuals of this species were caught in this particular trap.

Morphological identification

Our female specimen of D. callizona Rehn, 1928 is within the variation described by Rehn (1928). The juvenile specimen was identified by comparison with the adult and using genetic data as well.

Genetic information

In the tree of Evangelista et al. (2014) this species is placed near two individuals reported as “Ectobiidae sp. 10”. The morphology of these specimens is consistent with Dendroblatta cnephaia Hebard, 1926, although we do not report them here because of a lack of adults to confirm identification.

Known geographic distribution

Trinidad and Tobago, Guyana, and Suriname.

Figure 14. 

Dendroblatta callizona adult female (DECBA0805). A Dorsal view B Ventral view.

Calhypnorna sp. A

Authors of the description

Evangelista, Wilson, & Ware.

Materials

Juvenile Figure 15.

Voucher number: DECBA1802.

GenBank accession number: KF155118.

Collection locale. CEIBA Biological Station, Madewini, Guyana.

GPS: 6°29'N, 58°13'W.

Collection date: 15 – August – 2012.

Collectors. Dominic A. Evangelista and William R. Kuhn.

Specimen information

This specimen is stored in ethanol and is deposited in the Center for Biodiversity at the University of Guyana.

Identification and differential diagnosis

We identified this specimen as Calhypnorna based on the following comparisons. Our specimen is not lacking an interocular carina as in Hypnornoides (Rehn 1917). Our specimen also has a definitively truncate posterior margin of the pronotum (Figure 15B), which differentiates it from Euhypnorna (Hebard 1921). Our specimen is lacking the hairs covering most of the body as in Hypnorna (1893) and most closely matches the illustration of Calhypnorna by Saussure & Zehntner (1893).

Description

The specimen is a juvenile that is likely in its penultimate instar. Overall, the body shape is elongated for a typical cockroach, and even for a typical Pseudophyllodromiinae. A large portion of the head is visible from a dorsal perspective, and reaches anteriorly past the pronotum significantly. The black coloration on the pronotum is the same width as the width of the head where it meets with the pronotal margin (Figure 15B).

Antennae are hirsute to nearly plumose. The antennae are slightly clubbed basally with the widest point occurring at first segment of the flagellum. There are two major color regions of the antennae: a dark basal region and a light distal region. The dark basal region begins as slightly lighter than the remainder but becomes a dark black color by the end of the dark region. The 25th segment of the antennae is the final dark segment. The 26th antennal segment begins the light region of the antennae. The 26th or 27th and subsequent segments are nearly white, becoming more brownish orange after the 7th white segment (33 total). The total number of antennal segments on the specimen is 38 (left) and 44 (right).

The head is very large in relation to the remainder of the body, triangular, and wider than typical for a Pseudophyllodromiinae (Figure 15A). Inter-ocular space is sharply angled creating a carina that begins where the compound eye meets the antennae. The antennal pits are closer together than the eyes. Eyes are prominent and appear to bulge the head laterally. Facial grooves spanning from the posterior portion of the eye towards the mouthparts are prominent. Coloration on head is brown-orange overall with a slightly lighter, less brown, patch above and below the carina. Ocellar spots are either absent or not readily visible.

The pronotum is colored with a dark black region taking up the major two fifths of the medial area. The black area is opaque and reaches forward to the anterior margin but just stops short of completion in the posterior eighth of the segment. The black region is nearly rectangular, slightly rounded anteriorly and widened posteriorly (Figure 15B). Bordering the black region laterally and posteriorly are translucent regions colored brown-orange similar to the remainder of the body.

Meta- and meso-thoracic segments are both strongly lobed, presumably due to the developing wings within. Color is orange-brown overall with small amounts of black on the tips of the posterior pair of wing pads. Legs are light in color with a slight orange tinge overall. Dark regions are present on the medial side of the base of the fore-coxae.

The ventro-anterior margin of the fore-femur have five (right) or eight (left) large piliform spines basally followed by 27 (right) and 20 (left) shorter piliform spines, which are then each followed by one larger piliform spine and finally one large distal spine that is not piliform. Arolia are large and extend beyond the tips of the pretarsal claws on all legs. Claws are symmetrical and unspecialized.

Both the venter and dorsum of the abdomen is the same orange-brown color as the remainder of the body, but with a slightly redder tinge. Soft black color borders the abdomen laterally and posteriorly.

The dorsal abdomen is mostly glabrous. Hairs that are present are most dense laterally and on segments five and six. Ventral abdomen is glabrous as well, with fewer hairs than on the dorsal side and no regions with any dense pubescence. Supra-anal plate is unspecialized and broadly subtrapezoidal or triangular. Subgenital plate is broadly subtrapezoidal with the posterior margin being broader than that of the subgenital plate. The posterior margin of the subgenital plate is not perfectly uniform and conforms around two large styli. Styli are equal in length to the entire subgenital plate. Their width is equal to half of the length of the visible portion of the styli.

Genetic information and evolutionary placement

Evangelista et al. (2014) recovers this sequence as being most closely related to a species reported as “Ectobiidae sp. 6” with 75% bootstrap support. This species is identified above as Chorisonuera inversa Hebard, 1926. Hebard hypothesized that these are closely related genera (Hebard 1921a) and we can now say that genetic data supports this hypothesis. We cannot definitively say, however, that they are sister taxa because of incomplete phylogenetic sampling in this tree. Thus, we follow Hebard (1921a) and not Beccaloni (Beccaloni 2007) and consider this to be in the Psuedophylodromiinae.

Known geographical distribution of Calhypnorna

Guyana (new record), Para Brazil, Bolivia and Panama.

Collection/ecological information

This specimen was found crawling through a benab. The only individual of this species observed in the field was the one collected and described here. Given that our overall collecting effort was significant (>1000 individuals of Blattodeas.s.) and we only found a single individual of Calhypnorna sp. A, we consider this species to be quite rare.

Previous work (Shelford 1912) has cited species of this genus as being beetle mimics. However, we observed no beetle model in the field that this species may have been mimicking. We did notice a similarity in body coloration of a wasp and Hemipteran sympatric with this conspicuously colored Blattodea (Figure 16).

Notes on historical records of this genus

The genus Calhypnorna Saussure & Zehntner, 1893 was originally established as a subgenus of Hypnorna Stål, 1860. It was then given generic status by Kirby (1904). The genera Calhypnorna, Hypnorna, Hypnornoides Rehn, 1917 and Euhypnorna Hebard, 1921 are thought to be closely related (Hebard 1921). These are known from a number of regions (Para and Rio de Janiero Brazil, Bolivia and Panama) but there are no records from the Guiana Shield. Therefore, a new record of this species from the coastal rainforests of Guyana is geographically disjointed from all other records of these taxa. On this basis alone, we might distinguish this specimen as a new species. However, since our lone specimen is a juvenile, we have limited morphological basis for differentiating this from known taxa. We refrain from establishing this as new species until adult specimens can be found but we still give a synopsis of the biological traits of this specimen. This new record extends the potential range of Calhypnorna Saussure & Zehntner, 1893 and it has now been recorded from Para Brazil (south of Amazon), Bolivia, Panama, and Guyana (new record).

Figure 15. 

Calhypnorna sp. A Ventral view of head B Dorsal view of body C Ventral view of body. Scale bar = 1 mm. Illustrations contributed by Megan M. Wilson.

Cockroach fauna of the Guyana Shield: Summary

The checklist (Table 1) contains 5 families, 18 subfamilies, 79 genera, and 234 species. French Guiana and Suriname contribute the most to this richness, with 151 and 136 species respectively (Figure 17). The surprisingly low number of records from Guianan Venezuela, Roraima and Amapa Brazil (Figure 17) are most definitely due to an historical under sampling in these regions.

When pooling and examining the range data for all the taxa (Figure 18) we see that, as expected, small ranges are most common among species. This is also true when pooling taxa together into genera, although these range sizes are larger overall. 85 species (36%) and 20 genera (25%) are limited to a single region while 36 species (15%) and 24 genera (30%) are represented in four or more regions. Small ranges (<4 regions) are no longer the majority when lumping species into subfamilies or families.

The highest rates of endemism are seen in Guianan Venezuela, Amapa Brazil and French Guiana (Figure 19). However, we believe these values to be inaccurate due to lack of sampling. Compared on a pairwise basis, Guyana, Suriname and French Guiana had a high proportion of shared fauna (Figure 20). These are each proximal to each other and centrally located, thus their faunal similarity is expected. Roraima showed a high number of its own species shared among each other region. However, most of the species recorded from Roraima are circumtropical taxa and the region is severely under sampled.

Most of the species in the checklist have neotropical distributions. There were few taxa listed with distributions that may be considered circumtropical or cosmopolitan: Blatta orientalis Linnaeus, Neostylopygia rhombifolia (Stoll), Periplaneta americana (Linnaeus), P. australasiae (Fabricius), P. brunnea Burmeister, Holocompsa nitidula (Fabricius), Phoetalia pallida (Brunner von Wattenwyl), P. circumvagans (Burmeister), Nauphoeta cinerea (Olivier), Rhyparobia maderae (Fabricius), Panchlora nivea (Linnaeus), Pycnoscelus surinamensis (Linnaeus), Blattella germanica (Linnaeus), Supella longipalpa (Fabricius). Most of these may be considered non-native, or adventive.

Figure 16. 

Comparison of overall body coloration of three sympatric species (Left: Ichneumonidae, Middle: Calhypnorna sp. “Aguyana”, Right: Reduviidae) from northern Guyana. Calhypnorna sp. shares the orange hind section and dark forward section with the other two insects. Additionally, the antennae of the cockroach composed of: a white band shared with the wasp; an orange band shared with the assassin bug; and a black base share among all. Photos are not to scale.

Figure 17. 

Known richness of cockroach fauna at different taxonomic levels for six regions of the Guiana Shield.

Figure 18. 

Extent of range for cockroach taxa. Classes represent the number of regions a taxon was present in: present in only one region – class one; present in all six regions – class 6; etc. Total number of taxa for each level shown on the right.

Figure 19. 

Proportion of cockroach fauna endemic to a region. Endemism is only referred to within the context of the shield.

Figure 20. 

Proportion of fauna in a region (left) shared with each other region (top). Values greater than. 5 are shaded by magnitude. The three central regions (Guyana, Suriname and French Guiana) have a high degree of similarity with each other.

Figure 21. 

Studies contributing to the checklist of cockroaches of the Guiana Shield. The year of publication of each source plotted against the order in which they were published. The present study, the 34th, is the final circle in the top right. The radius of the circles represents the relative number of times that study is cited in the checklist.

Discussion

The majority of records used to compile the checklist were lacking in specific biological, geographic or ecological information. Most historical records we encountered only gave general collection locales within their respective country. GPS information was non-existent for nearly all records.

We present eight new species records for Guyana. This includes one genus new to the entire shield (Calhypnorna Saussure & Zehntner, 1893) and one new species (Xestoblatta berenbaumae). Given the somewhat high local richness of cockroaches (Evangelista et al. 2014) in one small plot compared to the richness of the entire country (Figure 17) we believe that much of this country’s diversity has yet to be discovered.

Among the regions considered here, Guyana and Amapa are moderately well sampled. Guianan Venezuela, and Roraima Brazil are sampled especially poorly and our knowledge of the Blattodea of these regions is very much preliminary. In contrast, French Guiana and Suriname are some of the most well sampled cockroach faunas in all the neotropics, ranking as the 2nd and 6th most species dense regions respectively (Table 4). The most well sampled region in the neotropics, Rio de Janeiro, has a species density of 0.01 species per square mile (Table 4). If we consider this value as being typical of true species density, which is purely speculation, then no other neotropical region has been sampled thoroughly.

The levels of endemism we see (Figure 19) are surprisingly low compared with other known rates of endemism for the Guiana Shield (Funk et al. 2007; Hollowell and Reynolds 2005; Kelloff and Funk 2004; Naka 2011). One possible explanation would simply be that cockroaches have low rates of tropical endemism. However, this is contradicted by other cockroach faunas showing much higher rates of endemism (e.g. ~60% of all taxa in Hispaniola; Gutierrez and Perez-Gelabert 2000). The alternate explanation is that there is a collection bias for taxa with broad ranges. This could be true if geographic sampling is very sparse, which may be the case. The levels of endemism we report (Figure 19) are actually higher than what they are in reality, since we only considered strictly Guianan regions. There are likely a few species that appear endemic when only considering these regions but by expanding the geographic scope we would find that they are actually not Guianan endemics (e.g. also being present in Trinidad, Colombia or other parts of Brazil).

If we didn’t already know that under-sampling for cockroaches (Pellens and Grandcolas 2008; Roth 2003) and other insects (Erwin 1982; Stork 1993) was generally problematic, we could infer this based on a number of clues in our data. First, as mentioned previously, an estimate of total species richness of cockroaches for one small plot in northern Guyana nearly matches the recorded richness of the entire country (Evangelista et al. 2014). Furthermore, there are 20 cases of species with unusual distributions (Table 5), where it is absent from a region but recorded from neighboring regions. Without evidence to the contrary, the simplest explanation for these distribution “holes” is inadequate sampling. Finally, although specific locality information is severely lacking for most records, those that are recorded do not represent effective spatial sampling, and most records are from coastal areas of major rivers. Finally, the number of species per region is significantly lower than that of better sampled but less diverse taxa such as Odonata (“Checklist of Odonata of the Guiana Shield” 2012; Garrison et al. 2006, 2010).

Although there is clearly a great under-sampling of cockroaches from this region, we cite 34 publications that contributed to this checklist, including the present (Figure 21). The earliest source was from 1868 (Walker 1868). Most of the publications contributing to the checklist were published between 1900 and 1940. Morgan Hebard, Isolda Rocha e Silva Albuquerque, Ashley Gurney and James Rehn contributed the most through primary taxonomic publications and species descriptions (in particular see Hebard 1926; Rehn 1930; Rocha E Silva Albuquerque and Gurney 1962). Karlis Princis, J. Bonfils and Conrad F.A. Bruijning were also important in these capacities but more-so through their own published checklists. Jaime Perez and J. Bonfils were also great contributors to the fauna of Venezuela and French Guiana. Similarly, Roseli Pellens was an important contributor to the knowledge of the two Brazilian regions through her checklist. Philippe Grandcolas was also an instrumental author through this same checklist, as well as other primary taxonomic publications. The three most cited papers in the checklist are Princis’ “Orthopterum Catalogus” (148 citations), Bruijning’s “The Blattidae of Surinam” (138 citations), and Hebard’s “The Blattidae of French Guiana” (105 citations) (Figure 21). It is worth restating that, although they are invaluable authors, Princis’ and Bruijning’s contributions were mainly through synthesizing work done by others. The significance of Hebard’s contribution to the knowledge of the Guianan fauna through “The Blattidae of French Guiana”, in which he alone described 53 new species, cannot be understated.

Table 4.
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The ten regions of the Neotropics with the highest known cockroach richness per unit area.

Region Size (mi2) # of spp. spp/mi2 Source
Rio de Janeiro, Brazil 16,871 169 0.0100 (Pellens and Grandcolas 2008)
French Guiana 32,253 151 0.0047 -
Panama 29,118 118 0.0041 (Beccaloni 2007)
Costa Rica 19,730 72 0.0036 (Beccaloni 2007)
Hispaniola 29,530 86 0.0029 (Perez-Gelabert 2008)
Continental Ecuador 46,444 114 0.0025 (Vidlicka 2013)
Suriname 63,039 136 0.0022 -
Cuba 42,426 85 0.0020 (Gutierrez 1995)
Amapa, Brazil 55,141 70 0.0013 -
Guyana 83,000 96 0.0012 -
Table 5.
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Recorded (o and +) and projected (p) presences of cockroaches from the Guiana Shield. VEN – Combined data from Amazonas, Bolivar and Delta Amacuro Venezuela; GUY – Guyana; SUR – Suriname; FG – French Guiana; Rora BRA – Roraima, Brazil. Amapa BRA – Amapa, Brazil. Projected occurrences are expectations of species presence based on confirmed presence in neighboring regions. Data used to determine this is taken from the checklist (Table 1) and other sources (see Table 1 for citations for these species).

VEN GUY SUR FG Rora BRA Amapa BRA
Blaberidae
Blaberinae
Blaberus colosseus p o p o
Blaberus craniifer p o p o
Epilamprinae
Epilampra azteca o p o o
Epilampra maculicollis o p o
Panchlorinae
Panchlora bidentula o p o o
Zetoborinae
Thanatophyllum akinetum + p o
Ectobiidae
Anaplectinae
Anaplecta subsignata o p o o o
Maraca fossata o p o o
Blattellinae
Cahita misella p p p o
Chromatonotus notatus p p o o
Eudromiella ineopectata o p o
Xestoblatta nyctiboroides o p o
Xestoblatta agautierae + p o
Pseudophyllodromiinae
Anisopygia decora o p o
Arawakina frontalis o p o
Chorisoneura gatunae p p o o
Euphyllodromia chopardi o p o o o
Neoblattella guianae o p o o
Sciablatta poecila o p o
Trioblattella callosoma o p o o

Conclusions

This checklist of Blattodea s.s. of the Guiana Shield, showing 234 species, is the most comprehensive to date. It is also functions as the first true checklist of cockroaches of Guyana, as all previous sources severely fall short of listing even the modest number of species we record here. Given the large number of species found in the small country of French Guiana, we see that the Guiana Shield may be one of world’s hotspots of biodiversity for cockroaches. However, sampling is still severely lacking. What little sampling has been done in the Guianas was mostly completed before 1960. There are huge gaps to fill in, and until they are we will be unable to adequately address most questions about the nature and origins of cockroach biodiversity.

Acknowledgements

Thank you to Dr. Sonia Maria Lopes, Dr. Esteban Gutierrez for assistance and mentoring in identification of some of the species reported here as well as for reviewing this manuscript. Thanks and appreciation is given to Dr. Peter Vrsansky for critically reviewing the manuscript as well. We would also like to acknowledge all those individuals listed as collectors of the specimens with special thanks to Joseph Evangelista, and Ian Biazzo. Ms. Kimberly Guzman contributed photos and collection management. Finally, Dominic Evangelista would like to thank Dr. May Berenbaum for her generous monetary donation to his thesis work. This work was also funded by Rutgers RUFAIR award, Ware’s Rutgers start-up funds, and the Smithsonian Biodiversity of the Guianas project (BDG 204).

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