Dianous depressifrons Puthz, 2016

Dianous depressifrons Puthz, 2016 View in CoL

( Figs 4 View Figs 1–6 , 11–14 View Figs 7–14 )

Dianous depressifrons Puthz, 2016: 731 View in CoL View Cited Treatment .

Material examined. CHINA: GUANGXI: 25 9 ♀♀, Lingui County, Huaping N. R., Anjiangping, alt. 1200 m, 13–18.vii.2011, Peng & Zhu leg. ( SHNU); 2 4 ♀♀, Jinxiu County, Shengtangshan, alt. 1000–1200 m, 27.vii.2011, Peng Zhong leg. ( SHNU); 4 3 ♀♀, Jinxiu County, 16 km, alt. 900 m, 29.vii.2011, Peng Zhong leg. ( SHNU); FUJIAN: 4, Wuyishan City, Guadun Vill., 27 ° 44 ′ N 117 ° 37 ′ E, alt. 1200–1500 m, 24–28.v.2012, Peng & Dai leg. ( SHNU).

Measurements. BL: 5.3–6.1 mm, FL: 2.9–3.1 mm. HW: 1.04–1.16 mm, PL: 0.84–0.95 mm, PW: 0.76–0.84 mm, EL: 1.24–1.41 mm, EW: 1.11–1.29 mm, SL: 1.05–1.15 mm. Head 0.90–0.94 times as wide as elytra; pronotum 1.03–1.15 times as long as wide; elytra 1.01–1.15 times as long as wide.

Description of male. Sternite V flattened posteromedially; sternite VI impressed at posteromedian part, posterior margin of the impression emarginate with a sharp projection on each side, pubescence of impression distinctly longer; sternite VII slightly impressed with shallow emargination along posterior margin of the impression, pubescence of impression distinctly longer; sternite VIII ( Fig. 13 View Figs 7–14 ) with deep emargination in the middle of posterior margin; sternite IX ( Fig. 12 View Figs 7–14 ) with apicolateral projections very strong and sharply pointed, posterior margin serrate; tergite X with posterior margin slightly emarginate. Aedeagus ( Fig. 11 View Figs 7–14 ) slender, apical sclerotized area nearly triangular with a short transverse ridge at middle; parameres slightly longer than median lobe, each with 24–28 setae on inner side of apical portion.

Distribution. China ( Guangxi, Fujian), Vietnam.

Remarks. The species is the smallest member of the complex with the elytra punctation less confluent. The species is new to China.