Dianous cruentatus L. Benick, 1942

Tang, Liang, Wang, Wei, Szx, Olympus & Eos, Canon, 2018, Notes on the Dianous luteoguttatus complex with description of a new species (Coleoptera: Staphylinidae), Acta Entomologica Musei Nationalis Pragae 58 (1), pp. 237-242 : 238

Dianous cruentatus L. Benick, 1942 ( Figs 2 , 7–9 )

Dianous cruentatus L. Benick, 1942: 37 , PUTHZ (2015: 150).

Material examined. CHINA: YUNNAN: 1, Lushui County, Qiqi, alt. 1980 m, 25.v.2009, Jian-Qing Zhu leg. ( SHNU); 1, Lushui County, Pianma, alt. 2400 m, 24.vi.2010, Liang Tang leg. ( SHNU); 6 2 ♀♀, Gongshan County, Qiqi, alt. 1900 m, 2.vii.2010, Liang Tang leg.( SHNU); 4 6 ♀♀, Tengchong County, Mingguang Town, Zizhi Vill., Donghe, 25 ° 42 ′ N 98 ° 34 ′ E, alt. 2100–2300 m, 1.v.2013, Dai, Peng & Song leg. ( SHNU). XIZANG: 2, Motuo County,Hanmi, alt. 2100 m, 23.vii.2011, Wen-Xuan Bi leg. ( SHNU); 5 4 ♀♀, Motuo County, Hanmi, alt. 2100 m, 12–31.vii.2013, Wen-Xuan Bi leg. ( SHNU).

Measurements. BL: 6.1–7.2 mm, FL: 3.5–4.2 mm. HW: 1.24–1.49 mm, PL: 0.95–1.13 mm, PW: 0.83–0.95 mm, EL: 1.31–1.56 mm, EW: 1.19–1.44 mm, SL: 1.03–1.28 mm. Head 0.92–1.05 times as wide as elytra; pronotum 1.15–1.21 times as long as wide; elytra 1.07–1.13 times as long as wide.

Distribution. China (Yunnan, Xizang), Myanmar.

Notes. The species can be easily recognized among the members of the complex by its bicolored femora. It can also be distinguished from other spotted species of the complex by the larger punctures of the head and smaller elytra spots. It can be distinguished from D. luteoguttatus and D. rimosipennis by the deeply concave median portion of the interocular area and larger eyes. The species is new to Xizang.

Figures

Figs 1–6. Habitus of the species of the Dianous luteoguttatus species complex. 1 – D. luteoguttatus Champion, 1919; 2 – D. cruentatus L. Benick, 1942; 3 – D. rimosipennis Puthz, 2005; 4 –D. depressifrons Puthz, 2016; 5 –D. vorticipennis Puthz, 2005; 6 – D. lilizheni sp. nov. Scale bars: 1 mm.

Figs 7–14. Sexual characters. 7–9 – Dianous cruentatus L. Benick, 1942; 10 – D. rimosipennis Puthz, 2005; 11–14 – D. depressifrons Puthz, 2016; 7, 11 – aedeagus; 8, 12 – male sternite IX; 9, 13 – male sternite VIII; 10, 14 – valvifer. Scale bars: 0.25 mm.