On Zyras sensu strictu in the East Palaearctic and Oriental regions III, with a focus on the Southeast of Continental Asia and the Sunda Islands (Coleoptera: Staphylinidae: Aleocharinae: Lomechusini) Author Assing, Volker text Beiträge Zur Entomologie = Contributions to Entomology 2017 2017-12-08 67 2 213 246 journal article 2470 10.21248/contrib.entomol.67.2.213-246 43c6cab4-bf7d-43c9-b9bf-b22c4ebf7924 0005-805X 5742339 FD33C1AE-F7D9-4E3A-A053-A2CAA7261CFE Zyras ( Zyras ) elegantulus CAMERON, 1939 ( Figs 16, 20 , 35 , 53–55 ) Zyras ( Zyras ) elegantulus CAMERON, 1939b: 20 . Type material examined : Lectotype ♂ , present designation: “ F. C. Drescher , G. Tangkoeban Prahoe, 4000–5000 Voet , Preanger , Java , 12–18.I.1933 / Syntype / M. Cameron. Bequest. B.M. 1955-147 / Lectotypus ♂ Zyras elegantulus Cameron , desig. V. Assing 2017” ( BMNH ). Paralectotype ♀: “ F. C. Drescher , G. Tangkoeban Prahoe , 4000–5000 Voet , Preanger , Java , VII.1934 / Z. elegantulus Cam. Cotype / Syntype / M. Cameron. Bequest. B.M. 1955-147” ( BMNH ) . Comment : The original description is based on an unspecified number of syntypes from “G. Tangkoeban Prahoe” ( CAMERON 1939b ). Two syntypes , a male and a female, were located in the Cameron collection. The male is designated as the lectotype . Redescription : Body length 5.3–5.7 mm ; length of forebody 2.5 mm . Coloration ( Figs 16, 20 , 35 ): head pale-brown to reddish-brown; pronotum pale-reddish; elytra yellowish to yellowish-red, with the postero-lateral portions more or less extensively infuscate (very extensively so in the paralectotype ); abdomen pale-reddish to dark-reddish, with the posterior halves of tergites V–VII darker; legs pale-yellowish; antennae dark-brown with antennomeres I–II pale-reddish to reddish-brown and X–XI yellowish-brown to brown; maxillary palpi reddish with the apical palpomere yellowish. Head ( Fig. 20 ) moderately transverse, median portion extensively impunctate; punctures in lateral portions sparse and coarse. Eyes longer than postocular region in dorsal view. Antenna ( Fig. 16 ) approximately 1.5 mm long; antennomeres IV–X transverse, of gradually increasing width and increasingly transverse, X approximately twice as broad as long, and XI approximately as long as the combined length of IX and X. Pronotum ( Fig. 20 ) large in relation to head, 1.15– 1.18 times as broad as long and 1.36–1.43 times as broad as head, broadest near anterior angles, moderately convex in cross-section; punctation rather coarse, sparse, and very irregularly distributed, with extensive impunctate areas on either side of midline; midline broadly impunctate. Elytra ( Fig. 20 ) 0.75–0.79 times as long as pronotum; punctation variable, moderately coarse to coarse, moderately sparse to moderately dense, defined, sparser posteriorly than anteriorly. Hind wings present. Metatarsomere I slender, slightly to distinctly shorter than the combined length of II–IV. Abdomen ( Fig. 35 ) narrower than elytra, with deep anterior impressions on tergites III–V; anterior impressions of tergites III–V each with a transverse row of weakly defined non-setiferous punctures; tergite III with two lateral punctures on either side and with approximately 15 setiferous punctures at posterior margin; tergite IV–V with a median pair of punctures, with 3–5 lateral setiferous punctures on either side, and with approximately 20 setiferous punctures at posterior margins; tergite VI with a narrow transverse row of coarse non-setiferous punctures anteriorly, with a median pair of punctures, with a lateral transverse series of three setiferous punctures on either side, and with approximately 20 setiferous punctures at posterior margin; tergite VII with a narrow transverse band of non-setiferous punctures anteriorly and with two transverse series of setiferous punctures in posterior portion, posterior margin with palisade fringe; tergite VIII with few setiferous punctures bearing long black setae only near posterior margin, posterior margin convex, in the middle truncate or indistinctly concave. ♂: posterior margin of sternite VIII convex; median lobe of aedeagus ( Figs 53–54 ) 0.57 mm long, of compact shape, ventral process short and broad; paramere ( Fig. 55 ) much longer than median lobe, 0.84 mm long, and with very short apical lobe. ♀: posterior margin of sternite VIII concave in the middle. Comparative notes : This species is characterized by a rather large pronotum (in relation to head), its coloration, a pronotum with very irregular punctation, the punctation pattern of the abdomen, and by the morphology of the aedeagus. Distribution : Zyras elegantulus has been recorded only from the type locality in Java .