Zyras (Zyras) punctipennis CAMERON, 1939

Assing, Volker, 2017, 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), Beiträge Zur Entomologie = Contributions to Entomology 67 (2), pp. 213-246 : 220-227

Zyras (Zyras) punctipennis CAMERON, 1939

( Figs 1, 19 , 34 )

Zyras (Zyras) punctipennis CAMERON, 1939b: 18 f.

Type material examined: Holotype ♀: “F. C. Drescher, G. Tangkoeban Prahoe , 4000–5000 Voet, Preanger, Java , IX.1933 / Z. punctipennis Cam. Type / Holotype / M. Cameron. Bequest. B.M. 1955-147 / Holotypus Zyras punctipennis Cameron , rev. V. Assing 2017” ( BMNH).

Comment: The original description is based on a unique holoype from “G. Tangkoeban Prahoe” ( CAMERON 1939b).

Additional material examined: Indonesia: 5 ♀♀, Kalimantan Tengah, Busang-Rekut confluence, 0°03'S, 113°59'E, flight interception trap, VIII.2001, leg. Brendell & Mendel ( BMNH, cAss) .

Redescription: Body length 6.5–8.0 mm; length of forebody 3.0– 3.4 mm. Coloration: head and pronotum brown; elytra reddish with the postero-lateral portions somewhat infuscate; abdomen dark-brown anteriorly and blackish-brown to blackish posteriorly, with the anterior and posterior margins of the segments reddish; legs pale-yellow, sometimes with the apices of the meso-and metafemora narrowly infuscate; antennae with antennomeres I–II reddish, III–VII or III–VIII brown to blackish-brown, and IX–XI or VIII–XI yellowish; maxillary palpi reddish with the apical palpomere yellowish-red.

Head ( Fig. 19 ) distinctly transverse, median portion extensively impunctate; punctures in lateral portions sparse and rather coarse. Eyes longer than postocular region in dorsal view. Antenna ( Fig. 1 ) 2.2–2.4 mm long; antennomeres IV–VI approximately as long as broad, VII–X increasingly transverse and of gradually increasing width, X barely 1.5 times as broad as long, and XI rather short, slightly shorter than the combined length of IX and X.

Pronotum ( Fig. 19 ) approximately 1.1 times as broad as long and 1.3 times as broad as head, broadest in anterior half, strongly convex in cross-section; punctation rather coarse, sparse, and irregularly distributed, with impunctate areas on either side of midline; midline broadly impunctate.

Elytra ( Fig. 19 ) 0.75–0.80 times as long as pronotum; punctation very coarse, defined, very dense near scutellum, gradually becoming less dense towards posterior margin. Hind wings fully developed. Metatarsomere I very long and slender, slightly longer than the combined length of II–IV.

Abdomen ( Fig. 34 ) approximately as broad as elytra, with moderately deep anterior impressions on tergites III–V; anterior impressions of tergites III–V each with a transverse row of dense, coarse, and defined non-setiferous punctures; tergite III with one or two lateral punctures on either side and with twelve setiferous punctures at posterior margin; tergite IV–V with a median pair of punctures, with a short lateral transverse series of three setiferous punctures on either side, and with approximately 15 setiferous punctures at posterior margins; tergite VI with a narrow transverse band 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 15 setiferous punctures at posterior margin; tergite VII with a 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 setiferous punctures bearing long dark setae in posterior third, posterior margin convex.

♂: unknown.

♀: posterior margin of sternite VIII broadly concave.

Comparative notes: This species is characterized by relatively large size, its coloration (particularly of the antennae), conspicuously dense and coarse punctation of the elytra, and by the punctation pattern of the abdomen.

Distribution: Zyras punctipennis has been recorded only from the type locality in Java and from one locality in Kalimantan Tengah, Borneo.

Figures

Figs 1–26: Antenna (1–18) and forebody (19–26) of Zyras spp. (1–17, 19–26) and Myrmedonota modiglianii (18): punctipennis, holotype (1, 19); facundus, lectotype (2, 24); latibasalis (3, 25); kinabaluensis, holotype (4, 21); matangensis, holotype (5, 26); bryanti, holotype (6, 23); granulipennis, holotype (7); flavorufus, lectotype (8); rutrilobatus (9); parvilobatus (10); hirtiventris (11–12; 11: holotype; 12 female paratype); hlavaci (13–14; 13 holotype; 14 paratype from Selangor); lunatus (15); elegantulus, lectotype (16, 20); pallipyga, holotype (17, 22). Scale bars: 1.0 mm.

Figs 27–39: Forebody (27–33), abdomen (34–38), and median portion of tergite VIII (39) of Zyras spp.: flavorufus, lectotype (27); parvilobatus (28); lunatus (29); granulipennis, holotype (30); rutrilobatus (31); hirtiventris (32); hlavaci, holotype (33); punctipennis, holotype (34); elegantulus, lectotype (35); facundus, lectotype (36); pallipyga, holotype (37); bryanti, holotype (38); latibasalis (39). Scale bars: 27–38: 1.0 mm; 39: 0.2 mm.