Drusilla, LEACH, 1819

Assing, Volker, 2015, New species and additional records of Lomechusini from the Palaearctic region, primarily from China (Coleoptera: Staphylinidae: Aleocharinae), Beiträge Zur Entomologie = Contributions to Entomology 65 (2), pp. 243-262 : 246

On the Drusilla fauna of China

Twelve species of Drusilla had been recorded from China (exclusive of Taiwan and Hong Kong): Drusilla aino NAKANE, 1963 ( Japan; doubtfully recorded from Jilin), D. cenwanglaomontis PACE, 2012 (Guangxi) ; D. damingensis PACE, 2012 (Guangxi) , D. dendrolasii MARUYAMA & KISHIMOTO, 2002 (Hunan) , D. gibberella PACE, 1998 ( China: Hainan; Hong Kong; Nepal), D. gilva PACE, 2012 (Sichuan) , D. imurai MARUYAMA & KISHIMOTO, 2002 (Hubei) , D. philippina (BERNHAUER, 1915) (Hainan) , D. sinicola PACE, 2012 (Sichuan) , D. watanabei MARUYAMA & KISHIMOTO, 2002 (Hubei, Hunan), D. yunnanensis PACE, 1993 (Hubei, Hunan, Yunnan), and D. zhejiangensis PACE, 1998 (Zhejiang) ( MARUYAMA & KISHIMOTO 2002a, b; PACE 1993, 1998, 2006, 2012).

Unlike most Drusilla species from the West Palaearctic region, at least some of the species recorded from China are remarkably widespread. This even applies to the micropterous D. watanabei . The distributions of the Chinese representatives of the genus are illustrated in Maps 1–2 .

The examined recently collected Drusilla material from the Chinese province Yunnan is composed of four species, two of them described previously and two undescribed. In order to facilitate future identification of D. watanabei and D. yunnanensis , both species are redescribed and newly illustrated. The two new species are distinguished from the three Drusilla species recorded from Burma ( D. assamensis (CAMERON, 1939) , D. feae (CAMERON, 1939) , D. malaisei (SCHEERPELTZ, 1965)) by different coloration alone.

Figures

Map 1: Distributions of Drusilla species recorded from China: D. flagellata (black stars); D.gilva (white square); D.imurai (black triangle); D. dendrolasii (white diamond); D. zhejiangensis (white star); D.cenwanglaomontis (white circle); D. damingensis (black circle); D. gibberella (black diamonds); D. philippina (white triangle).

Map 2: Distributions of Drusilla species recorded from China: D. palata (white stars); D. yunnanensis (black and grey circles); D. watanabei (white and grey circles); D. sinicola (black star).