Proceedings of the Zoological Institute RAS Vol. 313, No. 4, 2009, рр. 440–446 УДК 595.722 A NEW SPECIES OF THE GENUS PLECTOPTERA SAUSSURE AND REDESCRIPTION OF EUSHELFORDIA PICA WALKER (DICTYOPTERA: BLATTELLIDAE) FROM PERU L.N. Anisyutkin Zoological Institute of the Russian Academy of Sciences, Universitetskaya Emb. 1, 199034 Saint Petersburg, Russia; e-mail: [email protected] ABSTRACT A new species of the genus Plectoptera, P. vladimiri sp. nov. is described from Peru. The male of the type species of the genus Eushelfordia, E. pica, is redescribed and the male genitalia are examined for the first time. The taxonomic position of the genus Eushelfordia is discussed. Key words: Blattellidae, Blattodea, cockroaches, Dictyoptera, Eushelfordia, Peru, Plectoptera, South America НОВЫЙ ВИД РОДА PLECTOPTERA SAUSSURE И ПЕРЕОПИСАНИЕ EUSHELFORDIA PICA WALKER (DICTYOPTERA: BLATTELLIDAE) ИЗ ПЕРУ Л.Н. Анисюткин Зоологический институт Российской академии наук, Университетская наб. 1, 199034 Санкт-Петербург, Россия; e-mail: [email protected] РЕЗЮМЕ Новый вид рода Plectoptera, P. vladimiri sp. nov., описан из Перу. Переописан самец типового вида рода Eushel- fordia, E. pica и впервые изучены гениталии самца этого вида и уточнено систематическое положение рода Eushelfordia. Ключевые слова: Blattellidae, Blattodea, тараканы, Dictyoptera, Eushelfordia, Перу, Plectoptera, Южная Америка INTRODUCTION These genera are characterized by different types of the male genitalia: normal oriented in the case of Eu- The Peruvian fauna of Blattellidae is poorly shelfordia and side reversed in the case of Plectoptera. known. Many new records were made during recent The genus Plectoptera includes small cockroaches field trip to Peru (2008). In the present paper I report of peculiar beetle-like appearance: tegmina are about records belonging to the genera Plectoptera strongly sclerotized, slightly longer then the abdo- Saussure, 1864 and Eushelfordia Hebard, 1924. men; wings are about twice length of tegmina and The present paper is the first result of an examina- folded. It numbers 24 species (including the new tion of the cockroaches collected during 2008 in Peru. species described below), which are distributed in Blattellidae from Peru 441 the New World (Princis 1965, 1971; Roth 2003). The nae brown, darker toward apices; pronotum brown genus Plecto ptera is the type genus for the subfamily in central part, nearly translucent along the edges Plectopterinae Saussure et Zehntner, 1893. Unfortu- (Figs. 1A, 3A, B); tegmina brown, each tegmen with nately, the male genitalia of Plectoptera spp. are insuf- large dark brown spot along caudal margin and two ficiently known to clarify the phylogeny of the genus. weak and indistinct light spots, larger one in central The genus Eushelfordia was described as a mo- part of tegmina, smaller one at humeral angle (Figs. notypical with a species E. pica (Walker, 1868) from 1C, 3A); other parts of body and legs yellowish. Sur- Brazil (Princis 1967). Later, one additional species, faces smooth and polished; puncturation visible only E. amazonensis (Rocha e Silva-Albuquerque, 1957), in costal field of tegmina. Head transverse (Fig. 1B); was transferred from the genus Paratropes Serville, with distance between eyes about equal to length of 1839. The male genitalia of E. pica, however, were eye (dorsoventral extension in Fig. 1B); distance be- undescribed. tween eyes slightly less than that between antennal sockets; distance between antennal sockets about MATERIAL AND METHODS 2.5 length of scapus; length ratio of 3rd, 4th and 5th (last) segments of maxillary palps approximately 1 : 0.6 : 0.9. Pronotum transverse (Fig. 1A), nearly All material studied was collected and preserved straight along anterior margin, rounded along lateral in 70% ethanol. In order to study the structures of the male genital complex (anal plate, hypandrium and posterior margins. Scutellum distinct, triangular and the male genitalia) the apex of the abdomen of (Fig. 1A). Antero-ventral margin of front femur with specimens was removed and treated with ca. 10% single apical spine. Hind metatarsus (basal segment) KOH. The structures of the genital complex were slightly longer than following segments combined; stored in microvials with 70% ethanol. segments 1–3 with about four (partially irregular) The terminology of the male genitalia follows rows of spines along ventral margin; pulvilli of seg- Klass (1997). The terminology used by Grandcolas ments 1–3 indiscernible, that of 4th segment present. (1996) is given in square brackets. Tarsal claws asymmetrical (anterior smaller) and All material studied (including type material) is serrate; arolia comparatively large, more than half deposited at the Zoological Institute of the Russian of claw length. Tegmina strongly sclerotized, more Academy of Sciences (Saint Petersburg, Russia). or less lanceolate in shape (Figs. 1C, 3A, B), with venation subobsolete; Sc strong, extend to middle of tegmen length; R more weak, sinuate, reaching apex of SYSTEMATICS tegmen, with anterior rami partly branched; M+CuA weakly visible, with some rami; CuP reduced. Wings Family Blattellidae Karny, 1908 with distal part shaped as a large appendiculate field Genus Plectoptera Saussure, 1864 (Fig. 3A, C, a.f.). Abdomen with only 7th tergite Plectoptera vladimiri sp. nov. specialized (Fig. 1D): medially membranous, with (Figs. 1A–F, 2A–F, 3A–C) brush of setae; laterally with pair of oval spots. Anal plate (X, ultimate tergite) subtriangular in shape, Etymology.This species is named in honour of with caudal margin distinctly emarginated (Fig. Dr. Vladimir Izersky, entomologist and investigator 1D). Paraprocts asymmetrical, without armament of Peruvian entomofauna. (Fig. 1F). Cerci comparatively short and broad (Fig. Type material. Holotype – male. PERU: Departa- 1D). Hypandrium asymmetrical (Figs. 1E, 2A–C), ment Junin, Satipo Prov., ~25 km SE of Satipo town, with prominent latero-caudal angles; styles strongly near Rio Venado village, ~1200 m, forest, 20-23 Octo- asymmetrical, apically pointed; right one larger than ber 2008, at light, coll. L. Anisyutkin. left one; interstylar protrusion with 2 apical teeth. Description. Male (holotype). Comparatively Male genitalia side-reversed (Fig. 2A, D–F). Scle- small, beetle-like cockroach. General colour yel- rite L2 [L1 – here and below in parentheses terms of lowish-brown (Fig. 3A, B); eyes, distal segments of Grandcolas (1996) are given] not separated in apical maxillary and labial palps and tibiae at outer margin (external) and basal (internal) parts (Fig. 2A, D), blackish; head brown, with indistinct light trans- rod-like, slightly curved at apex, with thin elongated verse band over antennal sockets (Fig. 1B); anten- accessory sclerite at apex (Fig. 2D, a.s.), apex densely 442 L.N. Anisyutkin Fig. 1. External morphology: Plectoptera vladimiri sp. nov. (A–F) and Eushelfordia pica Walker (G–L). Anterior part of body from above (A); head in frontal view (B, G); left tegmen from above (C); abdominal apex from above (D, I); hypandrium from below (E, K); abdominal apex from below, hypandrium and genitalia removed (F, L); anal plate (X, ultimate tergite) outline from posterodorsal (J). Dotted area shows dark colour (A–C, G, H) or membranous parts (D–F, L). VI, VII, VIII, IX, X – numbers of abdominal tergites; M+CuA, R, Sc – veins. Scale bar (mm): a = A, C, H; b = B, D, E, F; c = G–K; d = L. Blattellidae from Peru 443 Fig. 2. Structures of male genitalia and hypandrium: Plectoptera vladimiri sp. nov. (A–F) and Eushelfordia pica Walker (G–N). Hypan- drium and genitalia from above (A, G); caudal margin of hypandrium from above (B) and from below (C); apex of sclerite L2 (D, H–J); hook hla with membranous base and distal sclerite L3 (E, K, L); right phallomere from above (F, M) and below (N). Dotted area shows membranous parts. a.p., a.s., hge, hla, L2, L3, r.plm., R3, R1P, R2+R1S – structures of the male genitalia, see text. Scale bar (mm): a = A; b = B, C, E; c = D, F; d = G; e = H–N. 444 L.N. Anisyutkin covered with small denticles (Fig. 2D). Sclerite L3 body from below, head, antennae and legs blackish. [L2d] long and slender, with hook hla comparatively Surfaces more or less polished, densely covered with high, without groove hge (subapical incision sensu small setae; facial part of head slightly uneven, teg- Roth (1970)), apex of hook hla simple (Fig. 2A, E). mina, especially in proximal part, not strongly punc- Two small sclerites in the far right wall of the phal- tured. Head slightly elongate (Fig. 1G); with distance lomere probably remnants of L4U [L3d] (Fig. 2A). between eyes about twice shorter than length of eye Right phallomere [complex of sclerites R and N] as in (dorsoventral extension in Fig. 1G); distance between Fig. 2A, F, with anterior protrusion (Fig. 2F, a.p.). eyes about twice shorter than that between antennal Female unknown. sockets; interval between antennal sockets about 1.6 Measurements (mm). Length: head 1.2; pronotum length of scapus; length ratio of 3rd, 4th and 5th (last) 2.7; tegmen 5.5; apical field of wing 4.1. Width: head segments of maxillary palps approximately 1 : 0.5 : 1. 1.5; pronotum 4.3. Antennae incrassated and plumose in middle part Comparison. The new species is assigned to the (Fig. 3D). Pronotum transverse (Fig. 1H), suboval, genus Plectoptera based on peculiar structure of with posterior margin protruded. Antero-ventral tegmina, wings and hypandrium. P. vladimiri sp. nov. margin of front femur with two apical spines. All readily differs from P. huascaray Caudell, 1913, only tarsal segments densely covered with long hairs. Hind known representative of the genus from Peru, by the metatarsus (basal segment) shorter than other tarsal lighter colour and distinctly emarginated anal plate. segments combined; 1–3 segments without rows of P. vladimiri sp. nov. differs from all other representa- spines along ventral margin; pulvilli of 1–4 segments tives of the genus by the peculiar structure of hypan- large. Tarsal claws simple and asymmetrical (anterior drium and styles. smaller); arolia comparatively large, more than one Remarks. It should be noted, that the shape and half of claw length. Tegmina semicoriaceous with venation of tegmen of this new species are signifi- dense venation (Fig. 3D). Abdomen without visible cantly different from those illustrated by Rehn (1951: glandular specializations. Anal plate (X, ultimate pl. VI, fig. 72) for P. porcellana (Saussure, 1862). tergite) transverse, with caudal margin widely pro- A peculiar feature of the new species is the pres- truded and medially weakly emarginated (Fig. 1I, J). ence of a distinct antrerior protrusion of sclerite N Paraprocts asymmetrical, with pair of spines (Fig. 1L). of the right phallomere (Fig. 2F, a.p.). Such structure Cerci comparatively short and robust, with apical seg- was earlier described for representatives of the genus ments largest (Fig. 1I). Hypandrium asymmetrical, Macrophyllodromia Saussure et Zehntner, 1893 (Ani- with caudal margin widely rounded; styles strongly syutkin 2007). asymmetrical, right one much shorter (Fig. 1K). Male genitalia of normal orientation (Fig. 2G– Subfamily Nyctiborinae Brunner von Wattenwyl, M). Sclerite L2 [L1] separated in short apical and 1893 long basal part (Fig. 2G–J): apical part incrassated, Genus Eushelfordia Hebard, 1925 with short curved spine at apex; basal part simple, Eushelfordia pica (Walker, 1868) rod-like. Sclerite L3 [L2d] comparatively short and robust (Fig. 2G, K, L), with groove hge (subapical (Figs. 1G–L, 2G–N, 3D) incision sensu Roth 1970) along anterior surface of Material examined. 1 male. PERU: Departament hook hla. Sclerite L4U [L3d] absent. Right phallom- Ucayali, Atalaya Prov., ~35 km NWW of Atalaya ere [complex of sclerites R and N] as in Fig. 2M, N, town on Ucayali river, near Sapani village, ~300 m, with elongate sclerite R1P [R2], comparatively wide forest, 26-31 October 2008, leg. D.Q. Rivera. sclerite R3 [R3v] and compact sclerites R2 and R1S. The following description is based on the above- Measurements (mm). Length: head 2.5; pronotum mentioned specimen and literature data (Hebard 4.2; tegmen 22. Width: head 2.4; pronotum 6.9. 1925; Shelford 1908; Walker 1868). Remarks. The studied specimen conforms in Description. Male. Brightly and contrastingly general to previous descriptions (Hebard 1925; Shel- coloured species (Fig. 3D); pronotum yellowish, with ford 1908; Walker 1868) except for the following: large medial black macula (Fig. 1H); tegmina black, the colouration of above described specimen slightly with pairs of yellowish (anterolateral part) and whit- differs from E. pica illustrated in paper by Shelford ish (anteroposterior ribbon at midlength) maculae; (1908) (compare Fig. 3D and Fig. 10). Blattellidae from Peru 445 Fig. 3. Plectoptera vladimiri sp. nov. (A–C) and Eushelfordia pica Walker (D). General view from above (A, D), below (B) and wing from above (C). In Figs. A, B antennae not shown completely. Photograph D – courtesy of M. Berezin. 446 L.N. Anisyutkin The genus Eushelfordia was described by Hebard Grandcolas P. 1993. Le genre Paramuzoa Roth, 1973: (1925) for Paratropes pica Walker, 1868 and was then sa repartition et un cas de xylophagie chez les Nycti- monotypical. This species was described from envi- borinae (Dictyoptera, Blattaria). Bulletin de la Societe rons of city Ega (modern Tefé, state Amazonas, Bra- entomologique de France, 98(2): 131–138. Grandcolas P. 1996. The phylogeny of cockroach families: zil). Later, the second species, Paratropes amazonensis a cladistic appraisal of morpho-anatomical data. Cana- Rocha e Silva-Albuquerque, 1957 was transferred dian Journal of Zoology, 74(3): 508–527. into Eushelfordia by Lopes and Oliveira (2007). The Hebard M. 1925 (1924). Studies in the Dermaptera and male genitalia structures of E. pica are typical for Orthoptera of Ecuador. Proceedings of the Academy of the subfamily Nyctiborinae (Roth 1973; Grandcolas Natural Sciences of Philadelphia, 76: 109–248. 1993, 1996; Deans and Roth 2003) and there are no Klass K.-D. 1997. The external male genitalia and the doubts that the genus Eushelfordia should be placed phylogeny of Blattaria and Mantodea. Bonner Zoologis- che Monographien, 42: 1–341. in this subfamily. The male genitalia of E. amazonensis Lopes S.M. and Oliveira de E.H. 2007. Contribuicao ao are not examined yet. conhecimento de Nyctiboridae Nyctiborinae (Blattel- lidae) do Brasil, com a descricao de novos taxons. Biota ACKNOWLEDGEMENTS Neotropica, 7(1): 35–37. Princis K. 1965. Blattariae: Subordo Blaberoidea: Fam.: The author wishes to express his sincere thanks to Oxyhaloidae, Panesthiidae, Cryptocercidae, Chori- all participants of the expedition in Peru, particularly to soneuridae; Oulopterygidae, Diplopteridae, Anaplecti- Dr. V. Izersky and D.Q. Rivera. I thank D.J. Mann (Hope dae, Archiblattidae, Nothoblattidae. Orthopterorum Entomological Collections, Oxford University Museum of Cata logus, 7: 283–400. Natural History) for comments on the manuscript and cor- Princis K. 1967. Blattariae: Subordo Epilamproidea: Fam.: Nyctiboridae, Epilamprinae. Orthopterorum Catalogus, rection of the English. I am indebted to M. Berezin (Mos- 11: 616–710. cow Zoo) for photo of E. pica. I would like to thank two Princis K. 1971. Blattariae: Subordo Epilamproidea: Fam. anonymous reviewers for valuable and useful comments on Ectobiidae. Orthopterorum Catalogus, 14: 1040–1224. the manuscript. This study was supported by the Russian Rehn J.W.H. 1951. Classification of the Blattaria as Foundation for Basic Research (grants No. 09-04-01113a) indicated by their wings (Orthoptera). Memoirs of and the program of Presidium of the Russian Academy of the American Entomological Society, Philadelphia, 14: Sciences “Origin and Evolution of Biosphere”. The collec- 1–134. tion of the Zoological Institute, Saint Petersburg, is sup- Roth L.M. 1970. The male genitalia of Blattaria. II. Po- ported by Rosnauka for UFC No. 2-2.20. eciloderrhis spp. (Blaberidae: Epilamprinae). Psyche, 77: 104–119. 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