Bioramix (Cardiobioramix) barkamica, Bai & Ren, 2020

Bai, Xing-Long & Ren, Guo-Dong, 2020, Revision of the genus Bioramix Bates, 1879 (Coleoptera: Tenebrionidae: Platyscelidini) from China, Zootaxa 4815 (1), pp. 1-102 : 10-12

Bioramix (Cardiobioramix) barkamica sp. nov.

( Figs 1 , 29–30 , 196–197 )

Description. Body black-brown, weakly shining, antennae, palpi and tarsi brown.

Male ( Figs 1 , 29–30 , 196 ). Head. Anterior margin of epistome straight, surface with dense and coarse punctures. Frons and genae weakly convex, surface with dense and coarse punctures. Dorsal surface of head with moderately dense and coarse punctures. Eyes transverse, anterior margin shallowly emarginate. Antennae ( Fig. 1 : A) reaching beyond pronotal base, antennomeres II–VIII long cylindrical and thicker at apex, XI sharped-oval. Length (width) ratio of antennomeres II–XI 31 (21): 68 (22): 49 (21): 43 (20): 45 (19): 52 (23): 48 (25): 47 (25): 42 (25): 44 (24).

Prothorax. Pronotum ( Fig. 1 : B) transverse and weakly convex, 1.3 times as wide as long, 1.7 times as wide as head. Lateral sides widest at middle, arcuately narrowing toward base and apex, weakly emarginate anterior to base. Ratio of width at anterior margin to widest part and base 26: 40: 37. Anterior margin emarginate, posterior one nearly straight. Anterior angles weakly obtuse, posterior ones nearly rectangular. Anterior and posterior margins edged laterally, entire lateral margins edged. Dorsal surface with sparse and coarse punctures on disc, denser at sides. Prothoracic hypomera with longitudinal wrinkles and sparse yellow setae. Prosternum anterior to procoxae with yellow setae, apex of prosternal process sharp projecting beyond level of procoxae in lateral view.

Pterothorax. Elytra elongate-oval and weakly convex, 1.4 times as long as wide and 1.2 times as wide as pronotum, base wider than pronotum and widest at middle. Surface with sparse, shallow and fine punctures, rows of sparse, shallow and larger punctures, fine wrinkles. Lateral margins of elytra merging with outer margins of epipleura anterior to apex of elytra and reaching sutural angle, visible at base in dorsal view.

Abdomen with sparse yellow setae, ventrites 1–2 weakly depressed at middle.

Legs. Profemora stout, with sparse punctures and yellow setae. Protibiae ( Fig. 1 : D) gradually widened toward apex, underside not concave at apex, inner side with dense yellow hairbrush from middle to apex. Protarsi ( Fig. 1 : C) as wide as apex of protibiae. Meso- and metafemora longer than profemora. Mesotibiae ( Fig. 1 : E) gradually widened toward apex, with yellow setae and rufous thick setae. Mesotarsi ( Fig. 1 : F) narrower than apex of mesotibiae. Metatibiae ( Fig. 1 : G) slender and long, with yellow setae and rufous thick setae. Length (width) ratio of pro-, meso- and metafemora 27 (9): 31 (7): 36 (8), that of corresponding tibiae 26 (6): 26 (6): 37 (6), and protarsi 26 (34): 47 (68): 43 (61): 29 (45): 69 (20), mesotarsi 44 (32): 42 (42): 43 (45): 30 (32): 69 (22), metatarsi ( Fig. 1 : H) 119 (25): 68 (23): 49 (25): 73 (21).

Aedeagus ( Figs 1 : I–J, 29–30) 3.1 mm long and 0.7 mm wide. Parameres 1.0 mm long and 0.6 mm wide, widest at base and narrowing toward apex nearly straight, distal part nearly straight in lateral view.

Female ( Fig. 197 ). Body wider, antennae reaching pronotal base, abdominal ventrites 1–2 neither depressed nor flattened at middle, pro- and mesotarsi not widened, other characters similar to male.

Measurements. Body length: ♂ 11.1–13.5 mm, ♀ 12.5–13.2 mm and width: ♂ 4.9–5.9 mm, ♀ 6.0– 6.2 mm.

Type material. Holotype: ♂ ( MHBU) , CHINA: Sichuan: Barkam City , 30.VII.2009, Ai-Min Shi & Yong-Fu Wang leg., coll. MCWNU . Paratypes: 1♂ ( MHBU) , 30♂♂, 25♀♀ ( MCWNU) , 2♂♂, 2♀♀ ( ZIN) , same data as holotype ; 1♀ ( MHBU) , Barkam City , 28.VII.2012, Yun-Chun Li & Yong-Ping Lai leg., coll. MCWNU ; 2♂♂, 1♀ ( MHBU) , Barkam City , 11.IX.1992, Jun Chen leg., coll. IZCAS ; 1♂ ( MHBU) , Barkam City , 1.X.2014, Lu Qiu leg. [ SWU] ; 5♂♂, 1♀ ( MHBU) , Zhangqia Shan, Barkam City , 27.VII.1999, Guo-Dong Ren et al. leg .; 2♂♂, 1♀ ( MHBU) , Zhuokeji Town, Barkam City , 24.VII.2011, Guo-Dong Ren leg.

Distribution. China: Sichuan.

Diagnosis. This new species is similar to Bioramix (Cardiobioramix) subaenescens ( Schuster, 1923) , but can be distinguished from the latter by the following characters (based on male): (1) pronotum widest at middle, surface with coarse punctures (anterior to middle, fine in B. subaenescens ); (2) apex of prosternal process sharp projecting beyond level of procoxae in lateral view (not projecting in B. subaenescens ); (3) elytral surface with sparse punctures and wrinkles (denser punctures and much denser wrinkles in B. subaenescens ); (4) base of parameres narrower, distal part nearly straight in lateral view (wider, curved ventrally in B. subaenescens ).

Etymology. This species name is derived from the type locality—Barkam.

Figures

FIGURES 1–2. Characters. 1. Bioramix barkamica (male), 2. B. gibbosa (male): A. antenna; B. pronotum; C. protarsi; D. protibiae; E. mesotibiae; F. mesotarsi; G. metatibiae; H. metatarsi; I–J. aedeagus in dorsal and lateral view.

FIGURES 25–48. Parameres of male aedeagus in dorsal and lateral view. 25–26. Bioramix oblongula; 27–28. B. rotundicollis; 29–30. B. barkamica; 31–32. B. championi; 33–34. B. chinensis; 35–36. B. gibbosa; 37–38. B. globipunctata; 39–40. B. liupanshana (= B. globipunctata); 41–42. B. korschefskyi; 43–44. B. longicornis; 45–46. B. maoxianensis; 47–48. B. prolongata.

FIGURES 196–201. Habitus. 196–197. Bioramix barkamica (196. male, holotype; 197. female, paratype); 198–199. B. championi (males; 198. lectotype); 200–201. B. chinensis (males; 200. syntype).