Tumidusternus fujianensis Huo & Ren

Huo, Lizhi, Li, Wenjing, Chen, Xiaosheng, Wang, Xingmin & Ren, Shunxiang, 2015, Tumidusternus, a new genus of Aspidimerini from China (Coleoptera, Coccinellidae), ZooKeys 511, pp. 81-87 : 82-85

Taxon classification Animalia Coleoptera Coccinellidae

Tumidusternus fujianensis Huo & Ren sp. n. Figure 2

Types.

Holotype: 1♂, China: Fujian Prov.: Xiangxi Village, Nanjing County, [24°31.07'N, 117°17.08'E], ca255m, 18.VIII.2012, Huo LZ et al. leg.

Paratypes (8): 1♂2♀, with same data as holotype; Guangdong Prov.: 1♂, Hengshitang Town, Yingde City, [24°18.51'N, 113°22.60'E], ca185m, 5.X.2004, Ren SX et al. leg; 1♂, Shimentai Village, Yingde City, [24°25.38'N, 113°18.14'E], ca420m, 29.X.2004, Wang XM leg; 1♂ (deposited in IOZ), Guangdong Ruyuan Grand Canyon, Ruyuan County, [24°31.22'N, 113°07.38'E], ca650m, 23.IX.2005, Wang XM leg; 1♂1♀, Yinna Mountain, Meizhou City, [24°24.16'N, 116°23.40'E], ca450m, 11.X.2014, Wang XM et al. leg.

Diagnosis.

This species can be easily distinguished from all known Aspidimerini species by its tumid prosternum.

Description.

TL: 2.73-2.95 mm, TW: 2.11-2.35 mm, TH: 1.35-1.46 mm, TL/TW: 1.25-1.29; PL/PW: 0.49-0.52; EL/EW: 1.02-1.06, HW/PW: 0.59-0.62; PW/EW: 0.72-0.73. ID/HW: 0.49-0.50.

Body oblong oval, densely covered with short, silver white pubescence (Fig. 2 a–c). Pronotum black with anterior margin and anterior corners yellowish brown (Fig. 2b). Scutellum black. Elytra black with apical 1/3 yellowish brown (Fig. 2a, c). Underside black except prothoracic hypomeron yellowish brown, prosternum, legs and lateral, and posterior margins of abdomen reddish brown (Fig. 2d).

Punctures on frons coarse and very dense, 0.2-0.5 diameters apart; on elytra and pronotum sparse, 1.0-3.0 diameters apart; on metaventrite densely distributed, 0.5-3.0 diameters apart. Ventral surface with short, dense, silver pubescence.

Male genitalia. Penis slender, curved at basal half, apex pointed (Fig. 2f). Penis capsule with inner arm slightly longer and thinner than outer one. Tegminal strut as long as main part of the tegmen. Parameres 2 times of phallobase length and 1.5 times of penis guide length, apical half with long sparse setae (Fig. 2 g–h). Penis guide 4 times as long as wide, parallel for basal 3/4, then convergent to rounded apex (Fig. 2i).

Female genitalia. Coxites subtriangular (Fig. 2e), with dense, short terminal setae. Spermatheca curved, C-shaped, with distinct ramus and short nodulus (Fig. 2j).

Etymology.

The specific name refers to the holotype locality, Fujian, China.

Distribution.

China (Fujian, Guangdong).

Key to the genera of Aspidimerini