Bioramix (Cardiobioramix) maoxianensis, 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 : 587-589

Bioramix (Cardiobioramix) maoxianensis sp. nov.

( Figs. 16–30 , 33–34 )

Type material. Holotype: male, CHINA: Sichuan, Maoxian, 31º41' N, 103º49' E, 1900 m, 25 Jul. 2012, Yun-chun Li and Yong-ping Lai leg. ( MCWNU). Paratypes: 7 males and 10 females, same data as holotype ( MCWNU).

Diagnosis. This new species resembles Bioramix (Cardiobioramix) szetschuana ( Kaszab, 1940) , B. (C.) kulzeri ( Kaszab, 1960) and B. (C.) subaenescens ( Schuster, 1923) in having similar length of antennae (reaching pronotal base when posteriorly extended), and strongly widened protrasi (nearly as wide or wider than protibia). It can be distinguished from the above-mentioned species by having slightly shorter antenna (with only apical segment reaching beyond pronotal base), elytral surface with traces of rows of punctures as large as or slightly larger than those on rest of elytral surface, more strongly widened protarsi (wider than protibia), and almost parallel basal part of parameres, which are apically evenly tapered.

Etymology. Named after the type locality, Maoxian.

Description. Body black, weakly shining; antennae brownish.

Male ( Figs 16–27 ). Anterior margin of clypeus straight. Genal margin parallel before eyes. Eyes transverse, anterior margin with shallow emargination, not protruding beyond contours of head. Temples weakly narrowed backwards. Vertex convex, with moderately dense fine punctation. Frontoclypeal suture shallow. Antennae long, with apical segment reaching beyond pronotal base when posteriorly extended. Length (width) ratio of antennomeres from 2nd to 11th as follows: 21(15): 52(14): 31(14): 32(14): 32(14): 33(15): 29(18): 26(18): 24(18): 32(19).

Pronotum ( Fig. 17 ) transverse, 1.2–1.4 (1.3 on average, n=8) times as wide as long, widest near middle, 1.7– 1.9 (1.8 on average, n=8) times as wide as head. Ratio of pronotal width at anterior margin to its maximum width and width at base (n=8) 0.6: 1.0: 0.9. Lateral margins of pronotum weakly arcuate, finely bordered along entire length. Anterior margin of pronotum sinuate, bordered laterally; base weakly bisinuate, not bordered or bordered laterally. Anterior angles of pronotum obtuse; posterior ones nearly rectangular. Pronotal surface between lateral margins convex, with punctures as large as or a little larger than those on head. Prothoracic hypomera concave, with longitudinal wrinkles. Intercoxal process of prosternum obtuse, projecting beyond level of procoxae (in lateral view).

Elytra oval, 1.3–1.5 (1.4 on average, n=8) times as long as wide, maximum width before middle, 1.3–1.5 (1.4 on average, n=8) times as wide as pronotum. Outer margin of epipleura reaching sutural angle, visible dorsally only at base. Elytral surface between epipleura and sutural margin convex, with traces of rows of sparse punctures as large as or slightly larger than those on rest of elytral surface. Epipleural surface with irregular wrinkles and small granules. Abdominal ventrites with yellow setae, abdominal ventrites 1 and 2 with shallow impression in middle; middle of base of last abdominal ventrite with shallowly depressed, impunctate semicircular area, apical margin wide rounded.

Legs ( Figs 18–22 ) moderately robust, length (width) ratio of pro-, meso- and metafemora 77(26): 88(24): 100(21); tibiae: 72(15): 73(14): 103(15). Protibiae 4.7 times as long as wide, gradually widening towards apex, inner surface with dense hairs and strong setae at apical 1/2. Metatibiae weakly incurved. Second protarsomeres nearly as wide as the apical margin of protibia. Plantar surface of pro- and mesotarsomeres from 1st to 4th with hair brushes. Length (width) ratio of pro- and mesotarsomeres from 1st to 5th as follows: 7.7(6.9): 9.2(15.4): 7.7(14.6): 4.6(10.8): 16.9(5.4) and 8.5(9.2): 10.1(11.5): 7.7(10.8): 5.4(8.5): 16.2(4.6), metatarsomeres 1 to 4: 33.1(6.2): 12.3(6.9): 11.5(6.2): 17.7(4.6).

Aedeagus ( Figs 23–25 ): length 3.6 mm, width 1.0 mm. Parameres 1.3 mm long and 0.7 mm wide, almost parallel to the basal part and then gradually tapered to the apex. Spiculum gastrale as in Fig. 26 . Apical margin of abdominal inner sternite VIII sinuate ( Fig. 27 ).

Female ( Figs 28–30 ). Body wider. Antennae shorter than in male. Pronotum 1.2–1.4 (1.3 on average, n=8) times as wide as long, 1.7–1.9 (1.8 on average, n=8) times as wide as head. Ratio of pronotal width at anterior margin to its maximum width and width at base 0.7: 1.0: 0.9. Elytra 1.2–1.4 (1.3 on average, n=8) times as long as wide, 1.1–1.4 (1.3 on average, n=8) times as wide as pronotum. Plantar surface of pro- and mesotarsomeres without brush. Ovipositor as in Figs 28–29 . Spiculum ventrale as in Fig. 30 .

Measurements. Male body length 13.5–14.7 mm, width 6.5–7.0 mm; female body length 13.2–15.2 mm, width 6.7–7.6 mm.

Distribution. China: Sichuan (Maoxian), between Min Shan and Qionglai Shan.

Figures

FIGURES 16 – 30. Bioramix (Cardiobioramix) maoxianensis, sp. nov.: Male characters: 16. antenna; 17. pronotum; 18. protibia; 19. protarsus; 20. mesotibia; 21. mesotarsus; 22. metatibia and metatarsus; 23 – 24. apical part of aedeagus in dorsal and ventral views; 25. aedeagus in lateral view; 26. spiculum gastrale; 27. abdominal sternite VIII. Female characters: 28 – 29. ovipositor in dorsal and ventral views; 30. 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).