18. Stenus japonicus Sharp, 1874

Stenus japonicus Sharp, 1874a: 84 .

Stenus insularis J. Sahlberg, 1887: 53; L. Benick, 1922: 178. Stenus necessarius L. Benick, 1922: 176; Puthz, 1968b: 45. Stenus niponensis Cameron, 1930d: 205; Naomi and Puthz, 1994: 217. Stenus sinensis L. Benick, 1940: 562; Puthz, 1967b: 141. Stenus civicus L. Benick, 1941: 284; Puthz, 1967a: 18.

Material examined. China: Zhejiang: 2♀♀, West Tianmushan, 3–6.VI.1999, Li-Zhen Li leg. (SHNU) ; 1♀, West Tianmushan, alt. 300m, 1.VI.2010, Jian-Qing Zhu leg. (SHNU) ; 1♂, West Tianmushan, alt. 1490m, 30.VIII.2015, Liang Tang leg. (SHNU)

Distribution. China (Shanghai, Zhejiang, Jiangsu, Anhui, Guizhou, Fujian, Hubei, Shanxi, Shaanxi), Japan, Russia.