Nazeris dayaoensis Hu & Li

Hu, Jia-Yao, Li, Li-Zhen & Zhao, Mei-Jun, 2012, Six new species of Nazeris Fauvel (Coleoptera, Staphylinidae, Paederinae) from Guangxi, South China, Zootaxa 3399, pp. 35-44 : 36-37

Nazeris dayaoensis Hu & Li , sp. n.

( Figs. 1–6 )

Type material. Holotype: male, labeled ' China: Guangxi Province / Jinxiu County / Dayaoshan N. R. / Shengtangshan / alt. 1650–1800 m / 26-VII-2011 / HU Jia-Yao leg.' Paratypes: 11 males, 10 females, same label data as holotype; 1 male, 1 female, same data, except 'alt. 1900 m, 25-VII-2011 / PENG Zhong leg.; 1 male, same data, except alt. 1900 m, 26-VII-2011 / PENG Zhong leg.; 8 males, 13 females, same data, except 7 km / alt. 1200–1400 m / 22- VII-2011 / HU & YIN leg.; 4 females, same data, except 7 km / alt. 1200–1400 m / 22-VII-2011 / PENG Zhong leg.; 4 males, 3 females, same data, except Yinshan Station / alt. 1200 m, 23-VII-2011 / PENG Zhong leg.

Description. Body length 4.2–5.4 mm; forebody length 2.4–2.5 mm.

Male. Body ( Fig. 1 ) reddish brown, with abdominal segment VII somewhat darker, antennal segments (except for basal two ones), maxillary palpi and legs (except for coxae) yellow.

Head about as long as wide; postocular portion 1.73 times as long as eye length; with umbilicate punctation coarse and dense. Antennae slender; relative length (width) of each antennomere from I to XI as 34.0 (9.0): 12.0 (6.0): 20.0 (4.0): 17.0 (4.5): 17.0 (4.5): 17.0 (4.5): 15.0 (4.5): 14.0 (4.0): 14.0 (4.0): 13.0 (5.0): 16.0 (5.5).

Pronotum longer than wide (length/width = 1.15), narrower than (pronotum/head = 0.88) and as long as head; prosternum with strong longitudinal median carina extending to anterior margin. Elytra shorter than wide (length/ width = 0.96), shorter (elytra/pronotum = 0.81) and narrower (elytra/pronotum = 0.96) than pronotum.

Abdomen elongate, tergites lacking microsculpture. Sternite VII ( Fig. 2 ) with posterior margin slightly emarginated at middle, area anterior to emargination not depressed. Sternite VIII ( Fig. 3 ) with posterior margin triangularly concaved at middle. Aedeagus ( Figs. 4–6 ) well sclerotized; median lobe with lateral sides nearly parallel in apical half, and abruptly constricted to sharp apex in dorsal or ventral view, with pair of round semi-membranous lateral projections near apical third; dorso-lateral apophysis very slender, slightly curved mesally in dorsal or ventral view and slightly curved dorsally in lateral view, extending to level of apex of median lobe.

Female. Sternites VII and VIII simple. Other characters similar to those of male.

Distribution. South China: Guangxi.

Remarks. Similar to N. fujianensis Hu et al. from Fujian in sharing a similar general appearance, but can be readily separated by the postocular portion being 1.73 times as long as eye length (1.54 times in N. fujianensis ), and aedeagus with the dorso-lateral apophysis lacking mesal process at apical third, while N. fujianensis has the dorsolateral apophysis with a long mesal process at apical third (Hu et al. 2010: 353, fig. 7).

Etymology. The specific name is derived from the name of the type locality: Dayao Mountain.

Figures

FIGURES 1 – 6. Nazeris dayaoensis sp. n. 1 — habitus; 2 — male sternite VII; 3 — male sternite VIII; 4 — aedeagus, in dorsal view; 5 — aedeagus, in lateral view; 6 — aedeagus, in ventral view. Scale bars: a = 1 mm, b = 0.5 mm.