Nazeris caoi, Hu, Jia-Yao, Li, Li-Zhen & Zhao, Yun-long, 2011

Hu, Jia-Yao, Li, Li-Zhen & Zhao, Yun-long, 2011, Notes on the Nazeris fauna of Yunnan Province, China (Coleoptera, Staphylinidae, Paederinae), ZooKeys 84, pp. 13-21 : 17-20

Nazeris caoi sp. n. Figs. 28-12

Type material.

CHINA: Holotype: Yunnan Prov.: male, Jinghong City, Nabanhe Nature Reserve, Bengganghani, 1,930m, 14. XI. 2008, Hu Jia-Yao & Tang Liang leg. Paratypes 1 male, same data as holotype; 1 female, Jinghong City, Nabanhe Nature Reserve, Bengganghani, 1,900m, 1. V. 2009, Hu Jia-Yao & Yin Zi-Wei leg. SHNUC.

Description.

Body length: 6.1-6.4 mm; forebody length: 3.3-3.6 mm.

Male. Body (Fig. 2) elongate, dark brown, with labrum, coxae, and basal two antennomeres reddish yellow, the remaining antennomeres, maxillary palpi and legs yellow, with exception for coxae.

Head suborbicular, slightly longer than wide (length/width = 1.07); postocular portion 2.14 times as long as eye length; punctation coarse, dense, and umbilicate; interstices reduced to narrow ridges. Antennae slender; relative length of each segment from 1 to 11: 42.0: 13.5: 30.0: 23.0: 21.0: 21.0: 19.0: 18.0: 18.0: 16.0: 22.0; relative width of each segment from 1 to 11: 10.5: 7.0: 6.5: 6.0: 5.5: 6.0: 5.5: 5.5: 6.0:6.5: 7.0.

Pronotum convex, oval, longer than wide (length/width = 1.19), narrower (pronotum/head = 0.88) and shorter (pronotum/head = 0.98) than head; prosternum with strong longitudinal median carina, which disappears behind anterior margin. Elytra slightly shorter than wide (length/width = 0.97), distinctly shorter (elytra/pronotum = 0.80) and slightly narrower (elytra/pronotum = 0.97) than pronotum.

Abdomen elongate, tergites without any microsculpture; densely and coarsely punctate. Seventh sternite (Fig. 8) distinctly emarginated in middle of posterior margin; 8th sternite (Fig. 9) with little short protrusion in middle, deeply excised in middle of posterior margin. Aedeagus (Figs. 10, 11 and 12) well sclerotized; median lobe bi-lobed in dorsal view, curved ventrad in apical 1/3 in lateral view; dorso-lateral apophyses very thin, slightly curved ventrad, not extending to apices of median lobe.

Female. Seventh and 8th sternites simple. The other characters are similar to those of male.

Remarks.

The present new species is similar in appearance to Nazeris nabanhensis sp. n. from the same locality, but can be distinguished from the latter by the following characters: postocular part more than twice as long as longitudinal diameter of each eye (in Nazeris nabanhensis less than twice as long as longitudinal diameter of each eye); median lobe of aedeagus in dorsal view bi-lobed (in Nazeris nabanhensis tri-lobed); dorso-lateral apophyses of aedeagus not extending to apices of median lobe (in Nazeris nabanhensis extending beyond apices of median lobe). The new species can be distinguished from Nazeris coomani Jarrige (1948: 40) from Vietnam by head with umbilicate punctation (in Nazeris coomani punctation of head simple), and distinguished from Nazeris odzisan Watanabe (1996: 1) from Vietnam by elytra shorter than wide (in Nazeris odzisan elytra longer than wide); median lobe of aedeagus in dorsal view bi-lobed (in Nazeris odzisan not lobed).

Etymology.

The species is named in honor of Mr. Guanghong Cao of Nabanhe Nature Reserve, who helped us a lot during field work.

Key to species of Nazeris from Yunnan Province, China