Shirozuella motuoensis, 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 : 93-94

Shirozuella motuoensis sp. n. Figs 15 –1736– 4068

Diagnosis.

This species is close to Shirozuella bimaculata in general appearance, but it is easily distinguished from the latter by the long and slender penis and the special shape of penis guide (Figs 37-39).

Description.

TL: 1.58-1.81mm, TW: 1.06-1.22mm, TH: 0.63-0.82mm, TL/TW: 1.49-1.50; PL/PW: 0.48-0.50; EL/EW: 1.14-1.31.

Body small, elongate oval, weakly convex, dorsum covered with relatively sparse pubescence (Figs 15-17). Head yellow to yellowish brown, with labrum and maxillary palpus brown. Pronotum yellowish brown, scutellum dark brown. Elytra blackish, with two large yellow spots placed on apical half, apex narrowly yellow. Prosternum dark brown, meso- and metaventrite black, elytral epipleura and legs brown.

Head moderately large, 0.41 × elytral width (HW/EW=2.46); frontal surface of head capsule slightly convex and rather weakly anteriorly inclined below; punctures on frons fine and sparse, inconspicuous, separated by 2.0 –4.0× a diameter, with sparse long setae in punctures; eyes relatively large, narrowly separated; widest interocular distance 1.3 × narrowest width. Pronotum relatively small, 0.69 × elytral width (PW/EW=1: 1.45), pronotal punctures very fine and inconspicuous, smaller than those on head, separated by 3.0 –4.0× a diameter. Scutellum moderately large, triangular, visible from above. Punctures on elytra moderately large, irregular, obviously larger than those on pronotum, separated by 1.0 –2.5× a diameter.

Surface of prosternum mat and slightly shagreened, punctures inconspicuous, with sparse short setae. 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 2.0 –6.0× a diameter, with short sparse setae. Abdominal postcoxal line complete, v-shaped, touching posterior margin of ventrite 1 (Fig. 36).

Male genitalia: Penis long and slender, strongly curved at 2/5 length, distinctly swollen at middle, penis capsule small (Fig. 37); penis guide in lateral view slender, widest at base, tapering to apex, apex pointed and slightly curved (Fig. 38); parameres slender, sparsely setose on apical half, about 2 × as long as penis guide, always strongly curved at apical 2/5 length (Fig. 38); penis guide in ventral view short and stout, a lmost parallel at basal 2/3, then tapering to apex, apex truncated with a pair of small triangular projections on each side (Fig. 39).

Female genitalia: Coxities elongate, about 3.5 × as long as wide, tapering to blunt, darker apices, styli small and distinct, with short terminal setae, apical area distinctly darkened (Fig. 40); 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). Paratypes: China, Tibet: 2♀♀, same data as holotype; 1♂, Yarang village, Motuo, [29°17.70'N, 95°16.87'E], ca 1000m, 24.x.2007, Wang XM leg. (SCAU).

Distribution.

China (Tibet).

Etymology.

The specific epithet refers to Motuo, the type locality of this ladybird.