Bioramix (Leipopleura) banbarensis Li & Egorov

Li, Yun-Chun, Egorov, L. V. & Shi, Ai-Min, 2016, Three new species of the subgenus Leipopleura Seidlitz from Tibet, China (Coleoptera, Tenebrionidae, Bioramix Bates), ZooKeys 609, pp. 29-41 : 34-37

Taxon classification Animalia Coleoptera Tenebrionidae

Bioramix (Leipopleura) banbarensis Li & Egorov sp. n. Figs 21-30, 35-36

Type material.

Holotype: male, CHINA: Tibet, Banbar, 30°55.964'N, 094°42.482'E, 3730 m, 25 Jul. 2010, Ai-Min Shi and Yong-Sheng Pan leg. (MCWNU). Paratype: 59 males and 51 females, 4 paratypes (2 males, 2 females) in ZIN, same data as the holotype.

Diagnosis.

This new species can be distinguished based on the following: shorter antennae (when posteriorly extended, not reaching pronotal base), anterior margin of pronotum straight, parameres distinctly sinuate near the apex ⅙ (in lateral view).

Etymology.

Named after the type locality, Banbar.

Description.

Body dark brown; surface weakly shiny.

Male (Figs 21-28). Head broad, anterior margin of clypeus straight, fronto-clypeal suture slightly obscure; most of genae densely punctate, covered with recumbent hairs. Dorsal surface of head slight convex. Punctation of head fine, dense or moderately dense. Eyes transverse, with shallow emargination at anterior margin. Antennae short, when posteriorly extended, not apices reaching base of pronotum. Length (width) ratio of antennomeres from 2nd to 11th as follows: 15.8(11.6): 27.2(12.2): 18.4(12.0): 17.4(12.0): 17.6(12.0): 16.8(12.2): 18.8(15.6): 15.8(14.8): 15.8(14.6): 22.4(14.0) (n = 5).

Pronotum (Fig. 22) transverse, 1.41-1.51 (1.47 on average, n = 5) times as wide as long, widest in the middle, 1.69-1.79 (1.75 on average, n = 5) times as wide as head. Ratio of pronotal width at anterior margin to its maximum width and width at base (n = 5) 0.64: 1.00: 0.88 on average. Outer margins of pronotum acutely convex, bordered along entire length. Anterior margin straight, bordered laterally; base weakly bisinuate, not bordered. Anterior angles of pronotum widely obtuse, posterior ones weakly obtuse. Pronotal surface between outer margins convex, with trace of slight depression. Punctuation on disc similar to that on frons, mainly dense, coarser and denser at sides. Prosternum with rather sparse hairs directed backwards and small granules. Intercoxal process not raised, sharply sloping behind procoxae. Prothoracic hypomeron with obvious longitudinal wrinkles and coarse granules.

Elytra elongate-oval, 1.28-1.45 (1.35 on average, n = 5) times as long as wide, widest nearly in the middle, 1.21-1.34 (1.28 on average, n = 5) times as wide as pronotum. Outer margin of epipleural not reaching sutural angle, visible dorsally only at base. Elytral surface between epipleura and sutural margin convex, with sparse and shallow punctures, irregular fine wrinkles and traces of longitudinal carina. Elytra margin setae and abdomen setae subequal length, elytra apex sharply declined. Mesosternum with rather sparse recumbent hairs, surface finely granulate and wrinkles. Abdominal ventrites with yellow hairs. First and second abdominal ventrites with shallow medial impressions. Last abdominal ventrite with depression and impunctate semicircular area at medial base, apical margin widely rounded.

Legs (Figs 23-25) robust, length (width) ratio of pro-, meso- and metafemora 70.4(25.0): 76.2(23.0): 93.2(24.6) (n = 5); that of corresponding tibiae 68.4(25.6): 68.6(19.4): 98.4(19.2) (n = 5). Protibiae 2.45-2.95 (2.78 on average, n = 5) times as long as wide, gradually widening towards apex, apical margin extended but not forming sharp triangle, underside concave. Pro- and mesotibia subequal length. Protibia with an obscure spur, metatibia nearly straight. Plantar surface of proximal pro- and mesotarsomeres 1-4 with setal brushes. Length (Width) ratio of pro-, meso- and metatarsomeres from 1st to 4th as follows: 8.6(8.2): 10.4 (17.4): 8.2 (16.0): 5.4 (9.8) (n = 5), 9.2 (8.2): 9.6 (15.4): 8.4 (12.8): 6.0 (7.4) (n = 5) and 28.2 (7.8): 13.4 (6.6): 10.6 (6.0): 21.6 (5.8) (n = 5).

Aedeagus (Figs 26-28): length 3.1-3.2 mm, width 0.93 mm. Parameres 1.15 mm long and 0.70 mm wide, moderately narrowed apically, apical ⅙ distinctly sinuate (in lateral view).

Female (Figs 29-30). Body longer and wider. Pronotum 1.50-1.57 (1.54 on average, n = 5) times as wide as long, 1.79-1.88 (1.82 on average, n = 5) times as wide as head. Ratio of pronotal width at anterior margin to its maximum width and width at base (n = 5) 0.70: 1.00: 0.95. Elytra 1.32-1.39 (1.35 on average, n = 5) times as long as wide, 1.24-1.34 (1.28 on average, n = 5) times as wide as pronotum. Plantar surface of pro- and mesotarsomeres without setal brush. Ovipositor in dorsal view with golden setae at apical ⅖, tuft of setae (with 7-8 long setae) present near apical margin.

Measurements.

Male body length 9.9-10.6 mm, width 4.9-5.4 mm; female body length 10.0-10.5 mm, width 5.0-5.4 mm.

Distribution.

China: Tibet (Nyainqentanglha Shan (Nyenchen Tanglha Mountains), Banbar).

Remarks.

Bioramix (Leipopleura) banbarensis Li & Egorov, sp. n. is similar to Bioramix (Leipopleura) crypticoides (Reitter, 1887) based on the following characters: pronotum widest near middle, anterior and posterior angles of pronotum obtuse, base weakly bisinuate, protibia apical margin extended not sharp apices, and metatibia nearly straight.

Conclusion.

The world fauna of the tribe Platyscelidini comprises 8 genera, 28 subgenera ( Egorov 2004, 2009) and found in Palaearctic area. moreover, its southern border coincides with the part of Palaearctic southern border in the Himalayas. The majority of species live in the steppe and mountain habitats, lesser number in semideserts. The mountain regions of Asia, such as the Tien Shan, the Pamirs, the Hindu Kush, the Karakorum Range, the unlun Shan, the Himalayas, as well as Northern and Central China mountains are the main centers of species diversity. The classification of the tribe, developed in detail by Kaszab (1940) and Egorov (2004, 2009).