Sinichella chengkou, 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 : 1762-1763

Sinichella chengkou nov.sp.

M a t e r i a l s t u d i e d: Holotype: Chengkou coun., Chongqing city, Gaonan Xiang, West Daba Shan, Guo-Di-Tang, 32.08.300N, 108.37.022E, 1830 m, Huang Hao & Xu Wang 24.IV.2008 ( SNUC).

D e s c r i p t i o n: Length of body about 9 mm; from anterior margin of head to posterior margin of elytra: 5 mm. Winged. Forebody as in Fig. 84 . Body without microsculpture, apart the abdomen with transverse micro-striation. Reddish brown with darker head and lighter elytra; antennae and legs brown. Head sub-rectangular, with slightly rounded sides and strictly rounded posterior agles. Eyes small and protruding. Surface of head shiny, with deep, dense puncturation, apart a narrow median strip. Pronotum a little longer and narrower than head, with scarcely oblique anterior margins, largely rounded anterior angles, and sinuate sides. Surface shiny, with dorsal series of 6 wide, deep, spaced punctures and lateral series of 4 punctures. Elytra longer and wider than pronotum, dilated posteriad, with marked humeral angles. Surface with superficial, fine and dense puncturation, arranged in numerous series. Abdomen with fine and sparse puncturation on the sides only.

Posterior margin of 6° visible abdominal tergite prolonged in a median lobe; posterior margin of 6° visible abdominal sternite with a slightly median emargination. Tergite and sternite of the male genital segment as in Figs 87-88 . Aedeagus ( Fig. 89 ) 1,85 mm long, sub-ovoidal, with symmetric characteristic parameres; inner sac wide, covered by fine and sparse triangular spines ( Fig. 90 ); the distal portion (everted from the basal bulbus) covered by dense, little spines.

E t y m o l o g y: The specific epithet refers to the type locality, as a noun in apposition.

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 Chengkou.

N o t e: The male genital segment was lost for a laboratory accident, after the description.

Figures

Figs 83-84: forebody of Medhiama tibetana nov.sp (83) and Sinichella nov.gen chengkou nov.sp. (84) (bar scale: 0,5 mm).

Figs 85-94: maxillary palpus, labial palpus, tergite, sternite of the male genital segment, aedeagus (bar scale: 0,5 mm) with particular of the scales of Sinichella nov.gen. chengkou nov.sp. (85-90); sixth visible abdominal tergite and sternite, male genital segment, sternite of the same of Emathidis humerosa (BERNHAUER) (91-94).