Atopolinus microtergalis, Bordoni, 2013

Bordoni, A., 2013, New data on the Xantholinini from China. 24. New genus, new species and new records of the Shanghai Normal University collection (Coleoptera, Staphylinidae) 244 ° contribution to the knowledge of the Staphylinidae, Linzer biologische Beiträge 45 (2), pp. 1745-1797 : 1766-1767

Atopolinus microtergalis nov.sp.

M a t e r i a l s t u d i e d: Holotype: Yunnan, Baiihualing, Tengchong coun., 2000-2400 m, Huang Hao 25.V.2005 ( SNUC).

D e s c r i p t i o n: Length of body about 7 mm; from anterior margin of head to posterior margin of elytra: 4 mm. Apterous. Body without micro-sculpture, apart the abdomen with traces of transverse micro-striature. Reddish brown; antennae and legs brown. Head very narrow and elongated, a little narrow anteriorly, with slightly rounded posterior sides and very scarcely rounded posterior angles. Eyes small and flat. Surface of head with 4 punctures between the eyes to form a quadrilater; other, dense punctures on the sides only. Pronotum a little longer and narrower than head, long and narrow, with extremely oblique anterior margins, obsolete anterior angles, and sinuate sides. Surface with dorsal series of 6-7 deep, spaced punctures and lateral series of 4-5 irregular punctures. Elytra sub-rectangular, narrow, shorter and a little wider than pronotum, with obsolete humeral angles, and sub-rectilinear sides. Surface rough, with superficial, dense puncturation, arranged in some series. Abdomen with fine, sparse puncturation, arranged in few regular series.

Posterior margin of 6° visible abdominal tergite protruding in a median, rounded lobe. Male genital segment ( Fig. 118 ) with fused plaurae and tergite very small; sternite of the same as in Fig. 119 . Aedeagus ( Fig. 120 ) 2 mm long, sub-spherical; inner sac composed by very numerous, small spines.

E t y m o l o g y: The specific epithet refers to the Latin micro-tergalis- e (microtergite).

G e o g r a p h i c a l d i s t r i b u t i o n: The species is known only from the type locality, in Yunnan.

N o t e: The specimen is in very poor conditions, broken into several parts and remounted; the aedeagus is devoid of pseudoparameres.

The species differs from the congeners by the inner sac of the aedeagus.

Figures

Figs 116-120: aedeagus (bar scale: 0,1 mm) of Atopolinus tangi nov.sp. (116-117); male genital segment, sternite of the same, aedeagus (bar scale: 0,5 mm) of Atopolinus microtergalis nov.sp. (118-120).