Dianous calvicollis Puthz, 2016

Wang, Wei, Tang, Liang & Luo, Yong-Ting, 2019, Notes on the genus Dianous LEACH, 1819 with description of a new species from China (Coleoptera, Staphylinidae), Zootaxa 4686 (2), pp. 282-288 : 283

Dianous calvicollis Puthz, 2016

( Figs 1, 2 , 9–14 )

Dianous calvicollis Puthz, 2016: 738 .

Material examined. China: Sichuan: 12♂♂ 4♀♀, Chengdu City, Qingcheng Shan, 19.VII.2003, Hu & Tang leg. ( SHNU) ; 2♂♂ 4♀♀, same data except Li-Zhen Li leg. ( SHNU) .

Measurements. BL: 4.2–5.2 mm, FL: 2.7–3.1 mm. HW: 0.98–1.05 mm, PL: 0.81–0.88 mm, PW: 0.81–0.90 mm, EL: 1.33–1.44 mm, EW: 1.23–1.36 mm, SL: 1.07–1.20 mm. Head 0.74–0.79 times as wide as elytra, pronotum 0.91–1.06 times as long as wide, elytra 1.02–1.07 times as long as wide.

Distribution. China (Sichuan, Hubei, Shaanxi).

Remarks. The species belongs to Dianous chinensis complex. It is similar to D. bashanensis Zheng, 1994 and D. gonggamontis Puthz, 2000 both from Sichuan, but can be distinguished from them by smaller and denser punctation of head, pronotum lacking pubescence and longer longitudinally rugae around the elytral marks, from D. gonggamontis also by weaker blue shimmer of entire body. The species is new to Sichuan.

Figures

FIGURES 1–8. Habitus. 1, 2 Dianous calvicollis 3, 4 D. huanghaoi 5, 6 D. luteostigmaticus 7, 8 D. pengi. Scale bars: 1 mm.

FIGURES 9–14. Sexual characters of Dianous calvicollis. 9 Male sternite VIII 10 male sternite IX 11, 12 aedeagus 13 female sternite VIII 14 valvifer. Scale bars: 0.25 mm.