Oodescelis (Planoodescelis) lii Bai & Ren, 2019

Bai, Xing-Long, Li, Xiu-Min & Ren, Guo-Dong, 2019, A review of the genus Oodescelis Motschulsky, 1845 (Coleoptera: Tenebrionidae Platyscelidini) from China, Zootaxa 4656 (3), pp. 401-430 : 417-418

Oodescelis (Planoodescelis) lii Bai & Ren , sp. nov.

(Figs. 2, 41–42, 68–69)

Diagnosis. This new species is similar to Oodescelis (Planoodescelis) kansouensis Kaszab, 1940 , but can be distinguished from the latter by the following characters: (1) body brown (black in O. kansouensis ); (2) pronotum widest at middle, surface with very sparse punctures (base, dense in O. kansouensis ); (3) elytra weakly convex, widely depressed along sutural in anterior half, width at middle obviously wider than that at base (flattened, not depressed, almost equal to in O. kansouensis ); (4) abdominal ventrites 1, 2 and 5 with setal brush at middle (without in O. kansouensis ); (5) metatibiae straight (slightly curved in O. kansouensis ); (6) parameres nearly as long as phallobase, base of parameres strongly wider than apex, distal part narrow and long (much shorter than, nearly as wide as, wide and flat in O. kansouensis ).

Description. Body brown with weakly shining, tarsi, antennae and palpus reddish brown.

Male (Figs. 2, 41–42, 68). Head. Anterior margin of frontoclypeus straight, frons rather flat, genae weakly convex, surface of head with dense and coarse punctures. Eyes transverse, with shallowly emarginate anterior margin. Antennae (Fig. 2: A) reaching beyond pronotal base, 2nd to 9th antennomeres long cylindrical and thicker at apex, 10th spherical, and 11th sharped-oval. Length (width) ratio of 2nd to 11th antennal segments 36 (26): 104 (27): 56 (26): 49 (26): 52 (26): 48 (26): 51 (31): 44 (33): 43 (36): 57 (36).

Prothorax. Pronotum (Fig. 2: B) transverse and weakly convex, widest at middle, 1.5 times as wide as long, 1.9 times as wide as head. Ratio of width at anterior margin to widest and basal 30: 49: 44. Lateral margins arcuately narrowing from middle toward base and apex, weakly emarginate before base. Anterior margin deeply emarginate and posterior one straight at middle. Anterior angles sharp, posterior ones rectangular and sharp. Anterior and posterior margins edged laterally, entire lateral margins edged. Surface with very sparse and coarse punctures, and almost invisible setae, flattened laterally. Prothoracic hypomera with fine granules and yellow setae. Prosternum before procoxae with fine granules and yellow setae, prosternal process projecting beyond level of procoxae, weakly obtuse at apex in lateral view.

Elytra elongate-oval and weakly convex, base wider than that of pronotum and widest at middle, 1.5 times as long as wide and 1.3 times as wide as pronotum. Surface with quite fine and sparse punctures, vestiges of rows of punctures and almost invisible setae. Elytral apex and epipleura matte. Surface of epipleura with rather sparse and short setae, without punctures or wrinkles. Lateral carinae visible completely in dorsal view.

Abdomen. Abdominal ventrites 1, 2 and 5 with setal brush at middle, 1st–4th ventrites with granules, apex of 3rd–4th ventrites with punctures at middle, 5th ventrite with punctures and longitudinal depressions at base laterally.

Legs. Profemora with tooth on inner side. Protibiae (Fig. 2: D) straight, inner side with dense yellow setae from middle to apex. Protarsi (Fig. 2: C) as wide as apex of protibiae. Mesotibiae (Fig. 2: E) weakly curved, inner side with dense yellow setae from middle to apex. Mesotarsi (Fig. 2: F) narrower than apex of mesotibiae. Metafemora with dense yellow hairbrush on the underside from base to middle. Metatibiae (Fig. 2: G) straight, inner side with dense yellow setae from middle to apex. Length (width) ratio of pro-, meso- and metafemora 33 (10): 27 (9): 46 (9), that of corresponding tibiae 29 (5): 32 (5): 45 (6), and protarsi 42 (54): 44 (53): 39 (50): 31 (40): 63 (25), mesotarsi 63 (43): 46 (41): 39 (38): 33 (33): 79 (24), metatarsi (Fig. 2: H) 141 (29): 70 (27): 56 (27): 94 (26).

Aedeagus (Figs. 2: I–K, 41–42) 6.3 mm long and 1.2 mm wide. Parameres 3.0 mm long and 0.9 mm wide, nearly as long as phallobase and widest at base, distal part narrow and long, S-shaped and apex hook-liked curved to dorsal side in lateral view.

Female ( Fig. 69 ). Body wider, antennae reaching pronotal base, abdomen without setal brush, metafemora without hairbrush on the underside, pro- and mesotarsi not widened, other characters similar to male.

Measurements. Body length: ♂ 13.5 mm, ♀ 13.6–14.0 mm and width: ♂ 6.2 mm, ♀ 6.8–6.9 mm.

Type material. Holotype: ♂ ( IZCAS), CHINA : Hubei: Longmenhe, Xingshan , 2200 m, 8.V.1994, Wen-Zhu Li leg. Paratypes: 3♀♀ ( IZCAS), same data as holotype .

Distribution. China: Hubei.

Etymology. This species is named from the last name of the collector—Li.

Figures

FIGURES 67–72. Habitus and type labels. 67–69. Habitus: 67. Oodescelis kansouensis (male); 68–69. O. lii (68. male, holotype; 69. female, paratype). 70–72. Type labels: 70. O. punctatissima emmerichi; 71. O. punctatissima punctatissima; 72. O. pyripenis.