Shirozuella unciforma, Wang, Xing-Min, Ge, Feng & Ren, Shun-Xiang, 2012

Wang, Xing-Min, Ge, Feng & Ren, Shun-Xiang, 2012, The genus Shirozuella Sasaji (Coleoptera, Coccinellidae, Shirozuellini) from the Chinese mainland, ZooKeys 182, pp. 87-108 : 97-98

Shirozuella unciforma sp. n. Figs 24 –2649– 5368

Diagnosis.

This species is close to Shirozuella tibetina , but it can be distinguished from the latter as follows: elytral apex is distinct yellow (Figs 24-25), penis apex is slightly swollen and penis guide’s apex unciform (Figs 50-51). Coxities are also diagnostic (Fig. 53).

Description.

TL: 1.65-1.75mm, TW: 1.12-1.29mm, TH: 0.66-0.73mm, TL/TW: 1.36-1.47; PL/PW: 0.52-0.55; EL/EW: 1.05-1.12.

Body small, elongate oval, weakly convex, dorsum covered with relatively sparse pubescence (Figs 24-26). Head brown to black. Pronotum black with anterior corners clearly yellowish brown, scutellum black. Elytron brown to black, with an elongate oblique yellowish brown spot situated between 2/5 and 4/5 elytral length to apex. Pro- and mesoventrite brown, metaventrite black, elytral epipleura brown. Legs brown with coxae yellow.

Head moderately large (Fig. 26), about 0.31 × elytral width (HW/EW=3.25); frontal surface of head capsule slightly convex and rather weakly anteriorly inclined below; punctures on frons fine, separated by 2.0 –2.5× a diameter, with sparse long setae in punctures; eyes relatively large, narrowly separated; widest interocular distance about 1.5 × narrowest width. Pronotum relatively small, 0.62 × elytral width (PW/EW=1: 1.63), pronotal punctures very fine, smaller than those on head, separated by 1.5 –3.5× a diameter. Scutellum moderately large, triangular, visible from above. Elytra rather elongate and weakly convex, with conspicuous swelling near humeral edge. Punctures on elytra moderately large, irregular, obviously larger than those on pronotum, separated by 1.5 –2.5× a diameter.

Pro- and mesoventrite slightly shagreened, punctures inconspicuous, with several short setae. Metaventrite broad and glabrous, median part concave, with complete median discrimen; punctures sparse and fine, separated by 2.5 –3.0× a diameter, with short sparse setae. Abdominal postcoxal line complete, reaching to 4/5 length of ventrite 1 (Fig. 49).

Male genitalia: Penis short and stout, penis capsule inconspicuous, apex rounded (Fig. 50); penis guide in lateral view stout, widest at base, gradually tapering to 4/5 length, then abruptly narrowed, apex unciform (Fig. 51); parameres slender, straight, sparsely setose at basal half, distinctly longer than penis guide; penis guide in ventral view short and stout, almost parallel at basal 4/5, then converging sharply to apex, apex slightly blunt (Fig. 52).

Female genitalia: Coxities elongate, subtriangular, about 2.5 × as long as wide, tapering to blunt apices, styli very small and inconspicuous, each with short terminal setae (Fig. 53); spermatheca not sclerotized.

Types.

Holotype: 1♂, China. Tibet: Hanmi, Motuo County, [29°21.87'N, 95°7.75'E], ca 2100m, 13.x.2009, Wang XM leg. (SCAU). Paratype: 1♀, same data as holotype.

Distribution.

China (Tibet).

Etymology.

The specific epithet is formed from the Latin adjective unciformus, referring to unciform apex of penis guide.