Bioramix (Cardiobioramix) jinchuanensis, Li, Yun-Chun, Egorov, L. V. & Shi, Ai-Min, 2016

Li, Yun-Chun, Egorov, L. V. & Shi, Ai-Min, 2016, Two new species of the subgenus Cardiobioramix Kaszab (Coleoptera: Tenebrionidae: Bioramix Bates) from the Sichuan Province, China, Zootaxa 4111 (5), pp. 584-590 : 585-586

Bioramix (Cardiobioramix) jinchuanensis sp. nov.

( Figs 1–15 , 31–32 )

Type material. Holotype: male, CHINA: Sichuan, Jinchuan, 31º30' N, 102º03' E, 2469 m, 31 Jul. 2012, Yun-chun Li and Yong-ping Lai leg. ( MCWNU). Paratype: 1 female, same data as the holotype ( MCWNU).

Diagnosis. This new species resembles Bioramix (Cardiobioramix) chinensis ( Kaszab, 1940) and B. (C.) korschefskyi ( Kaszab, 1940) in having similar length of antennae (when posteriorly extended, reaching pronotal base), transverse pronotum (widest near the middle), elytral surface covered with rows of sparse large punctures, and strongly widened protarsi. It can be distinguished from the above-mentioned species by having anterior margin of clypeus weakly arcuate in the middle, slightly longer antenna (with three apical segments reaching beyond pronotal base) and elongated parameres, which are S-shaped and curved in their distal part.

Etymology. Named after the type locality, Jinchuan.

Description. Body black, weakly shining, elytra with very weak bronze shine; antennae and legs brownish. Male ( Figs 1–12 ). Anterior margin of clypeus weakly arcuate in the middle. Genal margin parallel before eyes. Eyes transverse, anterior margin with shallow emargination, not protruding beyond contours of head. Temples slightly protruding outwards behind eyes, then sharply narrowed backwards. Vertex convex, with moderately dense punctation. Frontoclypeal suture shallow. Antennae ( Fig. 1 ) long, with three apical segments reaching beyond pronotal base when posteriorly extended. Length (width) ratio of antennomeres from 2nd to 11th as follows: 25(16): 63(18): 35(18): 33(17): 35(17): 36(17): 34(18): 30(18): 26(20): 36(20).

Pronotum ( Fig. 2 ) transverse, 1.3 times as wide as long, widest near middle, 1.7 times as wide as head. Ratio of pronotal width at anterior margin to its maximum width and width at the base 0.7: 1.0: 0.9. Lateral margins of pronotum weakly arcuate, nearly parallel in basal 1/6, finely bordered along entire length. Anterior margin of pronotum sinuate, base straight, both bordered laterally. Anterior angles of pronotum weakly obtuse, rounded apically; posterior ones nearly rectangular. Pronotal surface between lateral margins convex; with moderately dense coarse punctation. Prothoracic hypomera concave, with longitudinal wrinkles. Intercoxal prosternal process weakly obtuse, projecting beyond level of procoxae (in lateral view).

Elytra elongate-oval, 1.6 times as long as wide, maximum width before middle, 1.7 times as wide as pronotum. Outer margin of epipleura reaching apex of elytra, anterior half visible from above. Elytral surface between epipleura and sutural margin convex, with rows of sparse large punctures much larger than those on rest of elytral surface. Epipleural surface with irregular wrinkles and sparse small granules. Abdominal ventrites with yellow setae. First and second abdominal ventrites with shallow impressions in the middle. Last abdominal ventrite without depression and impunctate semicircular area.

Legs ( Figs 3–7 ) robust, length (width) ratio of pro-, meso- and metafemorae 75(23): 82(20): 100(20); tibiae: 65(16): 67(14): 94(16). Protibiae 4.2 times as long as wide, gradually widened towards apex; outer margin slightly extended at apex, inner surface with dense hairs and strong setae at apical 2/3. Metatibiae slightly incurved. Second and third protarsomeres wider than apical margin of protibia. Plantar surface of 1st to 4th pro- and mesotarsomeres with hair brushes. Length (width) ratio of pro- and mesotarsomeres from 1st to 5th as follows: 7.7(9.0): 10.3(17.4): 9.0(16.1): 5.2(11.6): 14.8(5.2) and 12.3(9.7): 11.0(13.5): 9.7(11.6): 5.8(9.0): 16.8(4.5), metatarsomeres 1st to 4th: 35.5(7.1): 19.4(6.5): 14.2(6.5): 20.0(5.8).

Aedeagus ( Figs 8–10 ): length 5.2 mm, width 1.3 mm. Parameres 1.8 mm long and 0.8 mm wide, with outer margins gradually narrowing towards apex; Parameres elongated, S-shaped curved distal part. Spiculum gastrale as in Fig. 11 . Apical margin of abdominal sternite VIII deeply sinuate ( Fig. 12 ).

Female ( Figs 13–15 ). Body larger. Antennae shorter than in male. Pronotum 1.3 times as wide as long, 1.6 times as wide as head. Ratio of pronotal width at anterior margin to its maximum width and width at base 0.6: 1.0: 0.9. Elytra 1.4 times as long as wide, 1.5 times as wide as pronotum. Anterior 1/3 of outer margin of epipleura visible from above. Plantar surface of pro- and mesotarsomeres without brush. Ovipositor as in Figs 13–14 . Spiculum ventrale as in Fig. 15 .

Measurements. Male body length 14.9 mm, width 6.9 mm; female body length 15.6 mm, width 7.7 mm.

Distribution. China: Sichuan (Jinchuan), between Daxue Shan and Qionglai Shan.

Figures

FIGURES 1 – 15. Bioramix (Cardiobioramix) jinchuanensis, sp. nov. Male characters: 1. antenna; 2. pronotum; 3. protibia; 4. protarsus; 5. mesotibia; 6. mesotarsus; 7. metatibia and metatarsus; 8 – 9. apical part of aedeagus in dorsal and ventral views; 10. aedeagus in lateral view; 11. spiculum gastrale; 12. abdominal sternite VIII. Female characters: 13 – 14. ovipositor in dorsal and ventral views; 15. spiculum ventrale.

FIGURES 31 – 34. 31 – 32. Bioramix (Cardiobioramix) jinchuanensis, sp. nov.: 31. male (length 14.9 mm); 32. female (length 15.6 mm); 33 – 34. B. (C.) maoxianensis, sp. nov.: 33. male (length 13.7 mm); 34. female (length 14.4 mm).