Shirozuella bimaculata Yu, 2000

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 : 91-93

Shirozuella bimaculata Yu, 2000 Figs 1-1468

Shirozuella bimaculata Yu, 2000[1999]: 63; Ren et al. 2009: 42.

Diagnosis.

This species can be identified as follows: pronotum uniformly yellow (Fig. 12), elytron black with a large yellow spot (Fig. 12), penis short and stout (Fig. 8), and penis guide short and subtriangular (Figs 9-10).

Description.

TL: 1.71-1.86mm, TW: 1.19-1.32mm, TH: 0.63-0.69mm, TL/TW: 1.41-1.44; PL/PW: 0.44-0.47; EL/EW: 1.08-1.14.

Body small, elongate oval, weakly convex, dorsum covered with relatively sparse pubescence (Figs 12-14). Head yellow with maxillary palpus dark brown. Pronotum yellow, scutellum dark brown. Elytra blackish, with two large yellow spots placed on apical half, apex narrowly yellow. Ventral surfaces uniformly dark brown, legs yellow.

Head moderately large (Fig. 1), 0.35 × elytral width (HW/EW=2.86); frontal surface of head capsule slightly convex; punctures on frons fine and sparse, separated by about 2.0 –3.0× a diameter, with sparse long setae in punctures; eyes large, narrowly separated; widest interocular distance 2 × narrowest width. Pronotum relatively small, 0.74 × elytral width (PW/EW=1:1.36), pronotal punctures fine, 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 –2.0× a diameter.

Surface of prosternum slightly shagreened, punctures inconspicuous, with sparse short setae. Mesoventrite shiny and glabrous, punctures inconspicuous, with several short setae. Metaventrite broad and glabrous, median part concave, with complete median discrimen; punctures sparse and large, with short sparse setae. Abdominal postcoxal line complete, v-shaped, reaching to 2/3 length of ventrite 1, or almost touching posterior margin (Fig. 6).

Male genitalia: Penis short and stout, penis capsule with indistinct outer arm and short inner one (Fig. 8); penis guide in lateral view slender, widest at base, tapering to apex, apex pointed and slightly curved (Fig. 9); parameres slender, sparsely setose on apical half, about 1.65 × as long as penis guide (Fig. 9); penis guide in ventral view short and stout, subtriangular, widest at base, tapering to apex, apex pointed (Fig. 10).

Female genitalia: Coxites elongate, about 3.0 times as long as wide, tapering to blunt, darker apices, styli distinct, with short terminal setae (Fig. 11); spermatheca not sclerotized.

Types examined.

Holotype: 1♀, China, Henan: Huangshian, Laojieling, Taiping Town, Xixia County, [33°37.53'N, 111°46.17'E], ca 1500m, 19.vii.1998, Yu Guoyue leg. (BAAF).

Other specimens examined.

1♂1♀, China, Gansu: Maijishan Forest Park, Tianshui, [34°20.81'N, 106°0.71'E], ca 1500m, 10.viii.2008, Wang XM leg. (SCAU); 4♂♂, Maijishan Forest Park, Tianshui, [34°20.81'N, 106°0.71'E], ca 1650m, 6.viii.2009, Wang XM et al. leg. (3♂♂ SCAU; 1♂ IOZ); Henan: 2♂♂2♀♀, Longy uwan Forest Park, Luanchuan, [33°41.16'N, 111°50.72'E], ca 1400m, 11.vii.2009, Wang XM et al. Leg. (1♂1♀ SCAU, 1♂1♀ IOZ); Shaanxi: 2♂♂2♀♀, Xunyangba, Ningshan, [33°32.87'N, 108°33.13'E], ca 1600m, 23.vii.2009, Wang XM et al. Leg. (SCAU).

Distribution.

China (Gansu, Henan, Shaanxi).