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Description of Two New Species of Pygoplatys Dallas, 1851, with a Key to the Species of the Genus (Hemiptera: Heteroptera: Tessaratomidae)

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Description of Two New Species of Pygoplatys Dallas, 1851, with a Key to the Species of the Genus (Hemiptera: Heteroptera: Tessaratomidae) Heteropterus Revista de Entomología 2011 Heteropterus Rev. Entomol. 11(2): 287-297 ISSN: 1579-0681 Description of two new species of Pygoplatys Dallas, 1851, with a key to the species of the genus (Hemiptera: Heteroptera: Tessaratomidae) PH. MAGNIEN Département Systématique et Évolution (Entomologie); Muséum National d’Histoire Naturelle; CP 50; 45 rue Buffon; F-75005 Paris; E-mail: [email protected] Abstract Two new species are described: Pygoplatys (s. str.) jordii n. sp. from Borneo, and P. (Odontoteuchus) berendi n. sp. from Sulawesi. The first key to the species of the genus Pygoplatys is given. A lectotype for P. bovillus Stål, 1871 is designated. Key words: Tessaratomidae,Tessaratominae, Pygoplatys, jordii n. sp., berendi n. sp., bovillus, key to species. Resumen Descripción de dos nuevas especies de Pygoplatys Dallas, 1851 y clave de las especies del género (Hemiptera: Heteroptera: Tessaratomidae) Se describen dos nuevas especies: Pygoplatys (s. str.) jordii n. sp., de Borneo, y P. (Odontoteuchus) berendi n. sp., de Célebes. Se presenta la primera clave de especies del género Pygoplatys. Se designa lectotipo de P. bovillus Stål, 1871. Palabras clave: Tessaratomidae,Tessaratominae, Pygoplatys, jordii n. sp., berendi n. sp., bovillus, clave de especies. Laburpena Pygoplatys Dallas, 1851 bi espezieren deskribapena eta generoaren espezie-klabe bat (Hemiptera: Heteroptera: Tessaratomidae) Bi espezie berri deskribatzen dira: Pygoplatys (s. str.) jordii n. sp., Borneokoa, eta P. (Odontoteuchus) berendi n. sp., Zele- besekoa. Pygoplatys generoko lehenengo espezie-klabea aurkezten da. Lektotipoa izendatzen da P. bovillus Stål, 1871 espezierako. Gako-hitzak: Tessaratomidae,Tessaratominae, Pygoplatys, jordii n. sp., berendi n. sp., bovillus, espezie-klabea. Introduction With twenty-nine described species, the genus Pygo- platys is the largest genus in the family Tessaratomidae. This work is the third about the genus Pygoplatys Dallas, It is widely distributed over the Oriental Region, with 1851, after Magnien et al. (2008) and Magnien (2008). the exception of India, and reaches its maximum di- Further work will be necessary to complete the review versity in Borneo, where thirteen out of the twenty- of the genus, due to lack of material for some species, nine known species are recorded (Rolston et al., 1994). difficulties to access the type specimens, or the fact The genus is divided in two subgenera, Pygoplatys s. str. that some species are known only by the type speci- and Odontoteuchus Stål, 1871, the latter restricted to men, either male of female, which does not allow an Philippines and Sulawesi, and the former, with a very easy matching due to the sexual dimorphism in this few exceptions, present in the occidental and conti- genus. nental parts of the region. 288 MAGNIEN: Two new species of Pygoplatys, with a key of the genus (Tessaratomidae) The present paper covers: Taxonomy - The description of two new species. - The designation of a lectotype for P. bovillus Stål, 1871. Pygoplatys (s. str.) jordii n. sp. - A preliminary key for 27 Pygoplatys species (out of the the 29 listed), two species not sufficiently re- cognized being excluded. Type material: 1 % and 1 &: HOLOTYPE: %, «Borneo sept / Kina balou / coll. Whitehead 1889 / n° 932» (MNHN). PARATYPE: 1 &, same data (MNHN). Material and methods Description: Abbreviations: Habitus: Figs. 1a-b (% and &). AMSA Australian Museum, Sidney, Australia. General hue ochraceous, darker and reddish on the BMNH Natural History Museum, London, UK. head and humeral processi, antennae light brown; BPBM Bernice P. Bishop Museum, Honolulu, Hawaii, USA. anterior margin of pronotum flavescent; scutellum: DEIC Deutsches Entomologisches Institut, Eberswalde, same hue as pronotal disc, apex with a dark spot; Germany. anterior part of hemelytron of the same hue, reddish HNHM Hungarian Natural History Museum, Budapest, on the major part of the disc; laterotergites: light Hungary. ochraceous on the exterior margin, somewhat reddish ISNB Institut Royal des Sciences Naturelles de Belgique, on the internal part; venter: light yellow, shiny, with a Brussels, Belgium. central rose stripe on the abdomen, abdomen margins MNHN Muséum National d’Histoire Naturelle,Paris, rose, spiracles concolorous; coxae and legs light red France. for the major part. NHRS Naturhistoriska Riksmuseet, Stockholm, Sweden. NMPC National Museum of Natural History, Department Head: coarsely punctate, juga slightly concave, roun- of Entomology, Prague, Czech Republic. ded at the apex, clypeus shorter than and completely RMNH Nationaal Natuurhistorisch Museum, Leiden, enclosed by juga; 1st segment of antennae reaching The Netherlands. apex of juga; 2nd and 3rd segments cylindrical and sub- ZSMC Zoologische Staatssammlung, Munchen, Ger- equal in length; last segment fusiform and longer than many. the two preceding segments by about 40%; pilosity Collections of the above-mentioned institutions and of antennae very short; rostrum short, surpassing the personnal collection of the author (abbreviated anterior coxae by the length of its 4th segment. PHM in the text) have been examined to establish Pronotum: disc with coarse, irregular and sparse the key of the genus.The types of all species save punctation, humeral processi extending well beyond P. lunatus, P. ralandii and P. shelfordi have been exami- the margins of abdomen, with margins subparallel, ned. More than a thousand specimens of Pygoplatys transverse in the male, projected forward and nearly have been studied since the beginning of this work, reaching the base of head in the female, truncated at but some species are known only by the type. almost right angle; pronotal width including humeral Pygophore and female abdomen were dissected after processi equaling 78% (resp. 73%) of habitus length clearing in cold potassium hydroxyde for one day or in the male (resp. female); calli smooth, moderately more. Phallus was inflated with the use of forceps. marked; posterior part of lateral margins thinly Examination of genitalia was conducted in glycerol wrinkled; punctation coarse and irregular on disc; using a semi-covered cavity slide. Pictures of habitus sternal processus long, its blunt apex reaching the an- have been assembled from series of pictures taken terior margin of fore coxae; distal end of femora with with a Nikon Coolpix 4500 using CombineZP. a spine on either side of tibia insertion; 1st segment The description of the female spermatheca follows of tarsi only slightly inflated, with brush of adhesive the terminology adopted by Pluot-Sigwalt and Lis hairs on the ventral surface, 2nd and 3rd segments (2008). Thus, it may present some differences with cylindroconical, the 2nd shorter. the terminology used in the previous papers about Scutellum: triangular, with apex lanceolate and the genus. grooved, punctation as pronotum. Heteropterus Rev. Entomol. (2011) 11(2): 287-297 289 (a) (b) (c) (d) FIGURE 1. Habitus of the new species: (a)-(b) Pygoplatys jordii n. sp.: (a) % ; (b) & ; (c)-(d) Pygoplatys berendi n. sp.: (c) % ; (d) & (Scale bar = 10 mm). 290 MAGNIEN: Two new species of Pygoplatys, with a key of the genus (Tessaratomidae) Hemelytron: punctation thin and regular, light-tawny Discussion: veins dictinct, contrasting with background; membrane Pygoplatys jordii n. sp. belongs to the nominal subge- with four basal cells, veins strong, subparallel. nus and is part of a group of species characterized Apex of abdomen of the male rounded; posterior by well developed humeral processi, bluntly truncate. margin of pygophore in line with posterior margins This group includes P. validus Dallas, P. merinjakensis of 7th segment. Apex of female abdomen (Fig. 2e) Distant, P. tenangau Magnien et al. (Magnien et al., showing the usual ten teeth disposition of the genus, 2008) and P. kerzhneri Magnien (Magnien, 2008). The 7th laterotergite protruding backwards, teeth of 8th second one, known only from the type female, is a laterotergite small, teeth of 9th laterotergite strong and curious and very stout species, which cannot be mis- widely surpassing the apex of 7th segment. taken with any other species. Genitalia (Fig. 2): Pygoplatys jordii n. sp. is the smallest species in the Male: Pygophore (Fig. 2a) widening posteriorly, group, the smallest male specimen known in the other posterior margin polygonal, with relatively deep species being at least 19 mm. The shape of humeral medial V-shaped indentation; opening with a tooth processi is very different from the rest of the group, on each side, above sensorial lobe of paramere. the ratio processus width versus diatone equal to Paramere (Figs. 2c-d) T-shaped, apex of apophysis about 2/3 for P. jordii n. sp. whereas it is about 1 for curved inwards and strongly sclerotized, claw-like, the other species. Furthermore, among the species sensorial lobe with very long setae, much longer than for which the two genders are known, it is the only the maximum width of the paramere. Phallosoma one to show such a sexual dimorphism in the shape (Fig. 2b) of the usual type in the genus, fitted with of the humeral processi. The light hue of the pro- two sclerotized plates, conjunctiva bearing two pairs of notal margin of the scutellum, in clear contrast with processi, one sclerotized in antero-ventral position, the disc, is a unique feature in the group.The relative long, two-toothed, and the other membranous in length of antennae, 0.43-0.44, is also larger in P. jordii postero-dorsal position, relatively thin and small; n. sp. than in P. tenangau (0.38) and P. kerzhneri (0.37), vesica very long, ejaculatory reservoir curved at base, and about the same as in P. validus. Regarding the fe- S-shaped and thickened in middle, and strongly tape- male, the shape of the abdomen apex is distinctive. ring at apex, fitted with a small sclerotized rod under The male genitalia also present some dictinctive cha- the ductus posteriad the S. racters, the most conspicuous being the shape of the stylet of the ventral processus, very long and two- Female: External genitalia as in Fig. 2e. Ring sclerites toothed, whereas it is rather short and with only one indistinct or absent.
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