Stenus cirrus L. Benick, 1940

Liang, Tang, Zhao, Yun-Long & Puthz, Volker, 2008, Six new Stenus species of the cirrus group (Coleoptera, Staphylinidae) from China with a key to species of the group, Zootaxa 1745, pp. 1-18 : 13-14

Stenus cirrus L. Benick, 1940

( Figs. 35–39 )

Material examined. CHINA: Zhejiang Prov.: ɗ, Lin’an City, Mt. West Tianmu, 15–16.VII.2000, LI Li- Zhen leg.; ɗ, Anji County, Longwang Shan, 300–500 m, 23.IV.2006, ZHU Jing-Wen leg.; Ψ, Anji County, Longwang Shan, Zhejiang Prov., 300–500 m, 23.IV.2006, TANG Liang leg.; ɗ, 5ΨΨ, Lin’an City, East Tianmu Nature Reserve, alt. 900 m, 1.IX.2006, XU Shen-Chong leg. (Type material had been examined by Volker Puthz, see Puthz 1967)

Male. Eighth sternite ( Fig. 35 ) with shallow emargination at middle of posterior margin; 9th sternite ( Fig. 36 ) with relatively small apicolateral projections and near straight posterior margin. Aedeagus ( Fig. 37 ) with median lobe broadest a little before basal half, tapering apicad into round projection at apex, expulsion clasp ( Fig. 38 ) strongly sclerotized; parameres slender, distinctly longer than median lobe, swollen at apex, each with about 19–21 setae on apico-internal margins.

Remarks. The type locality of this species was listed in the original description ( Benick 1940) as “NW- China Tiemushan”, which is actually Tianmushan, Zhejiang Prov., East China. It can be easily distinguished from other Chinese species of the cirrus group by entirely black body and very narrow, linear margins of 4– 6th abdominal segments.

Distribution. China (Zhejiang Province).

Figures

FIGURES 35 – 39. Details of Stenus cirrus L. Benick. 35 — male 8 th sternite; 36 — male 9 th sternite; 37 — aedeagus in ventral view; 38 — expulsion clasp of aedeagus; 39 — spermatheca. Scale bars 0.25 mm.