Gnaptorina (Hesperoptorina) dongdashanensis, Shi, Ai-Min, 2013

Shi, Ai-Min, 2013, Three new species of Gnaptorina Reitter (Coleoptera, Tenebrionidae: Blaptini) from Tibet, China, Zootaxa 3637 (4), pp. 462-471 : 466-467

Gnaptorina (Hesperoptorina) dongdashanensis , sp. nov.

( Figs. 16–29 , 46–47 )

Type material. Holotype: male, CHINA: Tibet, Zuogong, Dongdashan, 29º44' N, 98º03' E, 4798 m, 20 Jul. 2010, Yun-chun Li and Yong-sheng Pan leg. (MCWNU). Paratypes: 15 males and 10 females, same data as the holotype (MCWNU).

Diagnosis. The new species resembles Gnaptorina (Hesperoptorina) kangmar Shi, Ren & Merkl, 2007 , with the following differences: Maximum of width of pronotum behind middle. Anterior margin of pronotum bordered laterally. Propleura sharply concave. Intercoxal process of prosternum gently sloping behind procoxae. Protibiae with 2 spurs at apical margin, lower spur fine and pointed. Parameres with outer margins weakly sinuate near the middle.

Etymology. Named after the type locality, Dongdashan.

Description. Body black, weakly shining, some (probably teneral) specimens with anterior part of head, apical antennomeres and tarsi somewhat pitchy brown.

Male ( Figs16, 18–26 ). Anterior margin of clypeus weakly sinuate. Lateral margin of head with obtuse-angled incision above antennal base. Genal margin parallel before eyes. Eyes barely protruding beyond contour of head. Vertex flat or slightly convex, with uniform punctures. Frontoclypeal suture distinct or not. Antennae ( Fig. 16 ) short, reaching posterior 1/4 of pronotum when posteriorly extended. Length (width) ratio of antennomeres 2 to 11 as follows: 12(10): 27(10): 11(11): 11(11): 11(11): 14(12): 14(14): 14(15): 13(16): 19(16).

Pronotum ( Fig. 18 ) transverse, 1.29–1.35 (1.30 on average, n=10) times as wide as long, maximum width behind middle, 1.68–1.81 (1.75 on average, n=10) times as wide as head. Ratio of pronotal width at anterior margin to its maximum width and width at base (n=10) 0.61: 1.00: 0.91 on average. Lateral margins of pronotum more sharply arcuately narrowing to anterior margin than to base, entirely bordered. Anterior margin of pronotum straight or weakly sinuate, bordered laterally; base straight not bordered. Anterior angles of pronotum obtuse, rounded apically; posterior ones weakly obtuse. Pronotal surface between lateral margins convex, with shallow median depression; punctures smaller than those on head, fine at disc center and larger laterally. Propleura sharply concave, with wrinkles and sparse granules. Intercoxal process with or without shallow median depression, gently sloping before and behind procoxae.

Elytra elongate-oval, 1.36–1.55 (1.45 on average, n=10) times as long as wide, maximum width before middle, 1.25–1.38 (1.33 on average, n=10) times as wide as pronotum. Less than anterior 1/2 of outer margin of epipleura visible from above. Elytral surface between epipleura and sutural margin convex, with irregular fine wrinkles and fine punctures. Epipleural surface smooth, with sparse fine wrinkles. Abdominal ventrites with punctures and brown setae, abdominal ventrites 1 to 3 with longitudinal wrinkles.

Legs ( Figs 19–21 ) moderately robust, length (width) ratio of pro-, meso- and metafemora 73(23): 88(21): 100(22); tibiae: 72(11): 74(12): 94(14). Upper spur of protibiae not massive, shorter than protarsomere 1, lower spur fine and pointed. Only protarsomere 1 with tuft of light setae at apical margin of plantar surface. Metatibiae straight, regularly widening apicad. Length (width) ratio of metatarsomeres 1 to 4 as follows: 20(6.0): 11(5.5): 10(5.5): 21(5.8).

Aedeagus ( Figs 22–24 ): length 2.06 mm, width 0.67 mm. Parameres 0.67 mm long and 0.43 mm wide, with outer margins weakly sinuate near middle, and apical part regularly narrowing towards apex. Spiculum gastrale as in Fig. 25 . Apical margin of abdominal sternite 8 sinuate ( Fig. 26 ).

Female ( Figs 17, 27–29 ). Body wider. Antennae ( Fig. 17 ) shorter than in male. Pronotum 1.36–1.42 (1.38 on average, n=10) times as wide as long. Anterior 1/4 of outer margin of epipleura visible from above. Upper spur of protibiae not very massive and rounded apically; lower spur fine and pointed. Plantar surface of protarsomeres without apical tuft of pale hairs. Ovipositor as in Figs 27–28 . Spiculum ventrale as in Fig.29 . Measurements. Male body length 10.2–11.2 mm, width 4.6–5.4 mm; female body length 10.2–11.4 mm, width 5.3–5.9 mm.

Distribution. China: Tibet (Zuogong, Dongdashan).

Figures

FIGURES 16 – 29. Gnaptorina dongdashanensis, sp. nov.. 16. antenna of male; 17. antenna of female; 18. pronotum of male; 19. protibiae and protarsomeres of male; 20. mesotibiae and mesotarsomeres of male; 21. metatibiae and metatarsomeres of male; 22 – 23. apical part of aedeagus in dorsal and ventral views; 24. aedeagus in lateral view; 25. spiculum gastrale; 26. abdominal sternite 8 of male; 27 – 28. ovipositor in dorsal and ventral views; 29. spiculum ventrale

FIGURES 44 – 47. 44 – 45. Gnaptorina medvedevi, sp. nov.: 44. male, length 9.0 mm; 45. female, length 9.1 mm; 46 – 47. G. dongdashanensis, sp. nov.: 46. male, length 10.7 mm; 47. female, length 10.9 mm