Oxytelus robustus Schubert, 1906

Lü, Liang & Zhou, Hong-Zhang, 2012, 3576, Zootaxa 3576, pp. 1-63 : 45-47

Oxytelus robustus Schubert, 1906

( Figs. 17A–P)

Schubert, 1906: 383 (Type locality: Kashmir, Sintan); Bernhauer and Schubert, 1911: 118; Cameron, 1930: 228 (subgenus Tanycraerus ; Kashmir); Koch, 1932: 655; Scheerpeltz, 1933: 1102; Herman, 1970: 410; Abdullah and Qadri, 1970: 122 ( West Pakistan); Coiffait, 1983: 276 (Kashmir); Herman, 2001: 1453; Smetana, 2004: 517 (subgenus Tanycraerus ).

Material examined. 44 specimens, 28 males and 16 females. 1 male, Kashmir, lg. Rost.// 9// robustus Schub. Cotypus // Chicago NHMus, M.Bernhauer Collection// Oxytelus robustus Schub , Paralectotype, P.Hammond det. 1970 ♂ ( FMNH); 1 male, Sintan Kashmir// robustus Sch. det.Bernhauer, Staudinger.// Chicago NHMus, M.Bernhauer Collection// Oxytelus robustus Schub , Paralectotype, P.Hammond det. 1970 ♂ ( FMNH); 1 female, Sintan Kashmir// robustus Sch. , det.Bernhauer, Staudinger.// Chicago NHMus, M.Bernhauer Collection// Oxytelus robustus Schub , Paralectotype, P.Hammond det. 1970 ♀ ( FMNH); CHINA, Beijing, Donglingshan [=Mt. Dongling]: 2 males, 4 females, 2000-2300m, 23.VI.2000, Hong-Zhang Zhou leg. ( IZ-CAS); 2 males, 1 females, 2070m, birch forest, sifting, 23.VI.2000, Xiao-Dong Yu leg. ( IZ-CAS); CHINA, Gansu: 1 female, Wenxian, Qiujiaba, 3200–3400m, 30.VI.1998, Jun Chen leg. ( IZ-CAS); CHINA, Sichuan: 1 male, Wolong, Balangshan [=Mt. Balang], 3700m, alpine meadow, pitfall trap, 4–7.VIII.2004, Xiao-Dong Yu leg. ( IZ-CAS); 1 female, same data as previous except: 3800m [elevation] ( IZ-CAS); 1 male, same data as previous except: 20–23.VIII.2004 (IZ- CAS); 1 male, 1 female, Ludingxian, Yajiagen mountain pass, 3984m, cow dung, 22.V.2009, Yu-Lingzi Zhou leg. ( IZ-CAS); 1 male, 1 female, near the outfall of Yajiang river, Jianzi mountain pass, 4440m, 25.V.2009, Hong-Bin Liang leg. ( IZ-CAS); 1 male, Litang, Gemuxiang, Tu'ershan, 3656m, cow dung, 31.V.2009, Yu-Lingzi Zhou leg. ( IZ-CAS); 17 males, 5 females, Batangxian, Cuopugou Lake, 4060m, cow dung, 4.VI.2009, Yu-Lingzi Zhou leg. ( IZ-CAS); INDIA: 1 female, Kashmir, Gulmarg, VI–VII.1931, M. Cameron leg. ( FMNH).

Redescription. Body black. Antennae, elytra and legs testaceous to black. Maxillae a little lighter. Length [average] male, 4.7 mm; female, 4.7 mm.

Male. Head ( Fig. 17A) widest at temples or eyes. Disc punctate, not pubescent. Clypeus subrectangular, protruding beyond anterior margin of supra-antennal ridges, a little longer than 1/4 head length, depressed in anterior part, surface sparingly punctate; anterior margin broadly emarginate, with denticle at either end. Epistomal suture with lateral portions incurved and running posteriorly a little beyond level of anterior margin of eyes. Vertex slightly convex but flat anteriorly, posterior part poorly limited and continuous with neck in median; midlongitudinal suture feeble, paralateral sutures extending anteriorly but not touching level of posterior margin of eyes. Eyes with fine facets, lightly convex, a little shorter than temples. Temples rounded and dilated. Occipital suture with middle portion absent; nuchal ridge present but discontinuous in middle, dorsal basal ridge present.

Mandible ( Fig. 17C) stout, slightly curved; two denticles on inner edge near middle and near apex each. Antenna (type I) shorter than head and pronotum together, with apical antennomere shorter than two preceding together.

Pronotum transverse, broadest at near anterior 1/3, obviously wider than head. Disc punctate and 3-sulcate (as Fig. 1H), median sulcus and two slightly curved paramedial sulci deep; two paralateral depressions shallow; lateral margin even, only weakly crenulate at posterolateral angles; posterolateral angles not prominent. Elytra punctate and rugose, lateral longitudinal ridge absent.

Abdomen coriaceous and pubescent, broadest at segment V or VI. Sternite VII ( Fig. 17E) with posterior margin straight, adorned with two denticles near middle a little behind posterior margin. Sternite VIII ( Fig. 17F) produced in middle of posterior margin forming narrow median lobe, apex of which emarginate and with fine transverse carina a little behind; at base of median lobe with two elevated denticles directed backward. Tergite IX ( Fig. 17H) with “ventral strut” ( Naomi 1989: 726, 728) broadened, flattened and thickened. Tergite X ( Fig. 17J) longer than wide, posterior margin weakly and narrowly emarginate in middle, with two lines of setae on haired posterior part.

Aedeagus ( Figs. 17M–P). Median lobe oblong-ovoid, weakly bulbous at base, obviously constricted from middle and narrowing toward apex; with membranous structures in apical part of median lobe; apical orifice small; apico-medial hook fishhook-shaped in lateral view, diverging at base and bent at near middle, with apical tip pointed; dorsal membranous area not covering all dorsum and not across length of median lobe. Paramere arm-like, broadened in dorsal view, with seta on apical 1/3, with furrow on basal arm.

Female. Head ( Fig. 17B) subtriangular; clypeus with lateral portions of epistomal suture not incurved at posterior; vertex posterior part well-limited and separated from neck by occipital suture; mid-longitudinal suture feeble; paralateral sutures running forward to level of posterior margin of eyes; eyes longer than temples, convex and protruding laterally; occipital suture with median portion present and obvious. Mandible ( Fig. 17D) slender and less curved, with transverse carina across middle of dorsal surface.

Abdominal sternite VII without denticles behind posterior margin. Sternite VIII ( Fig. 17G) with middle portion of posterior margin shortly and gradually produced backward and deflexed in ventral view. Tergite IX ( Fig. 17I) without “ventral strut”, but anterior margin somewhat serrate, anterior to tergite IX with separate transverse ventral sclerite, and connected with tergite IX by membrane. Tergite X ( Fig. 17K) scutiform, with anterior margin broadly rounded in middle, with posterior margin truncate.

Spermatheca ( Fig. 17L) ʋ- shaped, constricted and bended at middle, basal portion slightly inflated, and apex rounded.

Distribution. China (Beijing, Gansu, Sichuan); Pakistan; India.