Gnaptorina (Hesperoptorina) cuonaensis, 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 : 468-470

Gnaptorina (Hesperoptorina) cuonaensis , sp. nov.

( Figs. 30–43 , 48–49 )

Type material. Holotype: male, CHINA: Tibet, Cuona, 27º60' N, 91º56' E, 4547 m, 12 Aug. 2010, Yong-sheng Pan and Yun-chun Li leg. (MCWNU). Paratypes: 20 males and 20 females, same data as the holotype (MCWNU).

Diagnosis. The new species resembles Gnaptorina (Hesperoptorina) kangmar Shi, Ren & Merkl, 2007 , with the following differences: Genal margin parallel before eyes. Eyes slightly protruding beyond contour of head. Antennae long, reaching nearly as far as pronotal base when posteriorly extended. Maximum of width of pronotum before middle, anterior margin weakly sinuate, bordered laterally. Parameres with outer margins sinuate near middle.

Etymology. Named after the type locality, Cuona.

Description. Body black, weakly shining; antennae, palpi and tarsi pitchy brown. Some (probably teneral) specimens with anterior part of head, lateral margins of pronotum and ventral surface of body pitchy brown.

Male ( Figs 30, 32–40 ). Anterior margin of clypeus slightly sinuate. Lateral margin of head with obtuse-angled incision above antennal base. Genal margin parallel before eyes. Eyes slightly protruding beyond contour of head. Vertex flat, with uniform punctures. Frontoclypeal suture distinct. Antennae ( Fig. 30 ) long, reaching nearly as far as pronotal base when posteriorly extended. Length (width) ratio of antennomeres 2 to 11 as follows: 11(9): 24(9): 12(9): 12(9): 13(9): 13(10): 12(12): 11(13): 12(14): 16(14).

Pronotum ( Fig. 32 ) transverse, 1.31–1.41 (1.38 on average, n=10) times as wide as long, maximum width before middle, 1.67–1.76 (1.71 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) 0.79: 1.00: 0.89 on average. Lateral margins of pronotum more sharply arcuately narrowing to anterior margin than to base, finely bordered along entire length. Anterior margin of pronotum 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 on basal half; punctures as large as those on head, fine at disc center and larger laterally. Propleura sharply concave, with wrinkles and very sparse granules. Prothoracic sternite gently sloping before procoxae. Intercoxal process with or without shallow median depression, gently sloping behind procoxae.

Elytra elongate-oval, 1.29–1.37 (1.32 on average, n=10) times as long as wide, maximum width before middle, 1.27–1.34 (1.31 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 outer margin of epipleura and sutural margin convex, sparsely covered 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 33–35 ) robust, length (width) ratio of pro-, meso- and metafemora 76(27): 88(23): 100(26); tibiae: 76(12): 72(14): 95(17). Protibiae with massive upper spur at apical margin longer than protarsomere 1, lower spur missing. Only protarsomere 1 with tuft of light setae at apical margin of plantar surface. Metatibiae incurved. Length (width) ratio of metatarsomeres 1 to 4 as follows: 16(5.6): 11(5.0): 10(5.0): 18(5.0).

Aedeagus ( Figs 36–38 ): length 1.77 mm, width 0.55 mm. Parameres 0.60 mm long and 0.38 mm wide, with outer margins sinuate near the middle. Spiculum gastrale as in Fig. 39 . Apical margin of abdominal sternite 8 sinuate ( Fig. 40 ).

Female ( Figs 31, 41–43 ). Body wider. Antennae ( Fig. 31 ) shorter than in male. Elytra 1.22–1.27 (1.24 on average, n=10) times as long as wide. Epipleural carina visible from above in anterior 1/3 or less. Upper spur of fore tibiae massive and rounded apically; lower spur missing. Plantar surface of protarsomere 1 without tuft of light setae. Ovipositor as in Figs 41–42 . Spiculum ventrale as in Fig. 43 .

Measurements. Male body length 8.2–9.8 mm, width 4.3–4.9 mm; female body length 8.4–10.3 mm, width 4.8–5.8 mm.

Distribution. China: Tibet (Cuona).

Figures

FIGURES 30 – 43. Gnaptorina cuonaensis, sp. nov.. 30. antenna of male; 31. antenna of female; 32. pronotum of male; 33. protibiae and protarsomeres of male; 34. mesotibiae and mesotarsomeres of male; 35. metatibiae and metatarsomeres of male; 36 – 37. apical part of aedeagus in dorsal and ventral views; 38. aedeagus in lateral view; 39. spiculum gastrale; 40. abdominal sternite 8 of male; 41 – 42. ovipositor in dorsal and ventral views; 43. spiculum ventrale

FIGURES 48 – 49. Gnaptorina cuonaensis, sp. nov.: 48. male, length 9.1 mm; 49. female, length 9.4 mm.