Atopolinus sinuatus, 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 : 1768

Atopolinus sinuatus nov.sp.

M a t e r i a l s t u d i e d: Holotype: Yunnan, 55 km Xishuangbanna, Li Zhen Li 8.VII.2003 ( SNUC); paratypes: same data, 1 ( SNUC); Yunnan, Menla conv., Xishuangbanna , Li Zhen Li 9.VII.2003, 1 (cB).

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. Winged. Body without micro-sculpture. Head black; pronotum, elytra and abdomen reddish brown dark; antennae and legs brown; yellowish tarsi. Head sub-rectangular, with almost rectilinear sides and largely rounded posterior angles. Eyes medium-sized and very protruding. Surface of head with 4 fine punctures between the eyes; puncturation fine and very sparse, almost only on the sides. Pronotum a little longer and narrower than head, with oblique anterior margins, very largely rounded anterior angles, and sinuate sides. Surface with dorsal series of 9-10 deep punctures and lateral series of 7-8 punctures. Elytra large, as long as pronotum, wider than it, with marked humeral angles. Surface with fine puncturation, arranged in some spaced series. Abdomen with fine, dense puncturation, especially on the sides.

Sixth visible abdominal tergite and sternite as in Figs 129-130 . Male genital segment of particular shape, with characteristic sinuate tergite ( Fig. 131 ); sternite of the same as in Fig. 132 . Aedeagus ( Fig. 133 ) 1,22 mm long, with asymmetrical, thick pseudoparameres; inner sac ribbon-like, folded on itself, covered by fine scales; one distal series of fine spinulae.

E t y m o l o g y: The specific epithet refers to the Latin sinuatus- a- um (sinuate), in relation to the shape of the tergite of the male genital segment.

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 localities, in Yunnan.

N o t e: The aedeagus of this species is closed to that of A. inusualis BORDONI 2010 , described from Yunnan (Dali Bai), but differs by the following characters: smaller size (about 2 mm long in A. inusualis ), without spines in the median portion, different pseudoparameres; the two species differs therefore in size, colouration, and puncturation.

I known only an other species with the similar tergite of the male genital segment: A. sulcatus BORDONI 2003e , from North Laos, very different in all other characters.

Figures

Figs 129-133: sixth visible abdominal tergite and sternite, male genital segment, sternite of the same, aedeagus (bar scale: 0,1 mm) of Atopolinus sinuatus nov.sp.