Lathrobium daicongchaoi Peng & Li

Peng, Zhong, Li, Li-Zhen & Zhao, Mei-Jun, 2012, Two new apterous species of Lathrobium Gravenhorst (Coleoptera, Staphylinidae, Paederinae) from Fujian, East China, ZooKeys 218, pp. 57-63 : 58-61

Lathrobium daicongchaoi Peng & Li sp. n. Figs 1A, 2

Type material

(3 ♂♂, 6 ♀♀). Holotype: ♂, labeled 'CHINA: Fujian Prov. / Wuyishan City / Guadun Village / 27°44'N, 117°37'E / 26.v.2012, alt. 1,400 m / Dai & Peng leg.'. Paratypes: 2♀♀, same label data as holotype; 2 ♂♂, 3 ♀♀, same data, except ‘29.v.2012’; 1♀, same data, except ‘28.v.2012’.

Description.

Measurements and ratios:BL 7.51-8.90, FL 3.72-4.00, HL 0.89-1.02, HW 1.02-1.15, PL 1.33-1.52, PW 1.13-1.24, EL 0.93-0.96, HL/HW 0.86-0.92, HW/PW 0.90-0.94, HL/PL 0.65-0.67, PL/PW 1.18-1.24, EL/PL 0.63-0.70.

Habitus as in Fig. 1A. Body brown with paler apex, legs light brown, antennae light brown to yellowish brown.

Head subquadrate (HL/HW 0.86-0.92); punctation coarse and sparse; interstices with very shallow microreticulation; eyes small, approximately 1/3-2/5 the length of postocular region in dorsal view.

Pronotum nearly parallel-sided; punctation sparser than that of head; impunctate midline narrow; interstices shining without microsculpture.

Elytra with punctation denser than that of pronotum and well defined; hind wings reduced.

Abdomen with dense punctation; interstices with very shallow, transversely striate microsculpture.

Male. Sternite VI (Fig. 2D) with dense darkish setae in postero-median impression; sternite VII (Fig. 2E) with sparse darkish setae in median impression, and poste rior margin with several peg-like setae; sternite VIII (Fig. 2I) with asymmetric emargination and short darkish setae in shallow impression; sternite IX (Fig. 2F) nearly symmetric; aedeagus (Figs 2G, 2H) with short ventral process and thin dorsal sclerite.

Female. Posterior margin of tergite VIII (Fig. 2A) pointed in middle; sternite VIII (Fig. 2B) slightly longer than that of male, middle of posterior margin with broad and obtuse projection; tergite X (Fig. 2C) obtuse apically and not reaching anterior margin of tergite IX (Fig. 2C).

Distribution.

East China: Fujian.

Etymology.

The species is named after Cong-Chao Dai, collector of the type specimens.

Remarks.

The new species resembles Lathrobium zhaotiexiongi Peng & Li, 2012 in havinga postero-median impression on the male sternite VI and similarly shaped male sternite IX. The new species can be readily separated by the presence of a median impression on the male sternite VII and by the short ventral process of the aedeagus. In Lathrobium zhaotiexiongi , the male sternite VII lacks a median impression and has an asymmetric posterior emargination, and the ventral process of the aedeagus is longer.