Aspidimerus nigritus (Pang & Mao, 1979)

Huo, Lizhi, Wang, Xingmin, Chen, Xiaosheng & Ren, Shunxiang, 2013, The genus Aspidimerus Mulsant, 1850 (Coleoptera, Coccinellidae) from China, with descriptions of two new species, ZooKeys 348, pp. 47-75 : 52

Aspidimerus nigritus (Pang & Mao, 1979) Figs 12-14, 39-42, 85

Cryptogonus nigritus Pang & Mao, 1979: 61; Cao et al. 1992: 138.

Aspidimerus nigritus : Kovář 2007: 71, 73, 575; Ren et al. 2009: 108. Combined by Kovář 2007: 71.

Aspidimerus dongpaoensis Hoàng, 1982: 165. Synonymized by Kovář 2007: 73.

Diagnosis.

This is a very distinctive species with body strongly convex and dorsal surface entirely black (Figs 12-14). Penis extremely short and stout (Fig. 39). Penis guide straight with hook-like apex in lateral view (Fig. 42). In ventral view, penis guide nearly parallel at basal half and then converging gradually to a blunted tip (Fig. 41).

Description.

TL: 3.75mm, TW: 3.00mm, TH: 1.80mm, TL/TW: 1.25; PL/PW: 0.53; EL/EW: 0.88.

Body oblong oval, strongly convex and sparsely pubescent (Figs 12-14). Head reddish brown, eyes silver white (Fig. 14). Dorsal surface entirely black (Fig. 12). Underside reddish brown, except prosternum, mesoventrite and metaventrite dark brown.

Head small, 0.37 times elytral width (HW/EW=1:2.73). Punctures on frons sparsely distributed, separated by 1.0-3.0 times their diameter. Eyes large and almost oval, rather finely faceted, the widest interocular distance about 0.50 times head width. Punctures on dorsal surface fine, close, separated by 0.5-2.0 times their diameter, with short, thin pubescence. Pronotum 0.67 times elytral width (PW/EW=1:1.50). Surface of prosternum coarse, with sparse long pubescence. Mesoventrite with inconspicuous, rather sparse punctation. Punctures on metaventrite moderately large, separated by 0.3-1.0 times their diameter, with dense golden pubescence.

Male genitalia: Penis short, distinctly stout (Fig. 39). Penis capsule with a large outer process and an indistinct inner one (Fig. 39). Apex of penis pointed with membranous appendage (Fig. 40). Penis guide slender with hook-like apex in lateral view (Fig. 42). In ventral view, penis guide nearly parallel at basal half, and then converging gradually to a blunted tip (Fig. 41). Parameres stout, shorter than penis guide, with sparsely distributed long setae at its apex and inner side (Fig. 42).

Female genitalia: Unknown.

Specimens examined.

China, Yunnan: 1♂, Menglun, Jinghong, [21°55.51'N, 101°15.45'E], ca 540m, 11.v.2009, Ren SX leg (SCAU).

Distribution.

China (Yunnan); Vietnam.