Microserangium fuscum Wang & Ren

Wang, Xingmin, Ślipinski, Adam & Ren, Shunxiang, 2013, The genus Microserangium Miyatake (Coleoptera, Coccinellidae) from China, ZooKeys 359, pp. 13-33 : 21

Microserangium fuscum Wang & Ren sp. n. Figures 13, 29-36, 93

Diagnosis.

This species can be distinguished from other Microserangium species by its relatively small body, dark brown dorsum (Fig. 13), fine and sparse pronotal punctation, rather small penis capsule (Fig. 30), and rather wide penis guide (Fig. 33).

Description.

TL: 1.15-1.29mm, TW: 1.02-1.15mm, TH: 0.63-0.69mm, TL/TW: 1.11-1.13; PL/PW: 0.34-0.44; EL/EW: 0.89-0.90; HW/TW: 0.45; PW/TW: 0.77.

Body shiny and glabrous (Fig. 13). Dorsum uniformly dark brown. Head brown. Underside reddish brown, legs yellowish brown, tibiae and tarsi yellow.

Head transverse and ventrally flattened; frons with four to six medium punctures and many fine punctures, and several long widely separated setae; eyes round, moderately large and coarsely faceted, widest interocular distance 0.57 × width of head. Antennal club oval and flat, apex blunt (Fig. 35).

Pronotum transverse, anterior corners inconspicuous and blunt, glabrous, punctures fine and sparsely distributed, associated with long sparsely distributed setae. Elytra smooth and shiny, with sparse row of long setae along margins, punctures extremely fine and inconspicuous. Prosternum mat and impunctate. Mesoventrite transverse, very short, surface mat, weakly furrowed. Metaventrite shiny and glabrous, punctures in center fine, 1.0-3.0 diameters apart. Meso- and metatibiae angulate externally beyond middle, almost triangular; tarsus with 3 tarsomeres (Fig. 36).

Male genitalia. Penis strongly curved along entire length, apex narrowed and pointed, penis capsule small (Figs 30-31). Tegmen slender and strongly asymmetrical. Penis guide in lateral view slender, almost straight, apex pointed (Fig. 32), in ventral view flat and rather wide (Fig. 33). Parameres small and short, less than 1/3 length of penis guide.

Types.

Holotype ♂: China, Hainan: Wushi, 19°8.99'N, 109°53.84'E, ca 320m, 14.vii.1999, Peng ZQ leg.; Paratypes (2): 1♀, same data as holotype; 1♂, Nanbin, 18°21.37'N, 109°11.0'E, ca 10m, 24.iii.1998, Peng ZQleg.

Distribution.

China (Hainan).

Etymology.

The specific epithet is formed from the Latin adjective fuscus, referring to the elytral disk being uniformly dark brown.