Metolinus guomen, 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 : 1754-1755

Metolinus guomen nov.sp.

M a t e r i a l s t u d i e d: Holotype: Yunnan, Nabanhe N. R., Guomenshan & Bengsaihe, 700 m, Jia-Yao Hu & Zi-Wei Yin 7.V.2009 ( SNUC).

D e s c r i p t i o n: Length of body about 8,5 mm; from anterior margin of head to posterior margin of elytra: 4,4 mm. Forebody black, abdomen reddish brown, genital segment reddish light; antennae brown; legs brown with lighter tarsi. Head and pronotum with fine and dense, transverse micro-striation. Head sub-rectangular, with subrectilinear sides and strictly rounded posterior angles. Surface with fine and sparse puncturation. Eyes very small and slightly protruding. Pronotum a little longer and narrower than head, with strictly rounded anterior angles and sub-rectilinear sides; dorsal series of 6 fine punctures and lateral series of 4-5 irregular and fine punctures. Elytra sub-rectangular, proportionally short, shorter and almost narrower than pronotum, with sub-rectilinear and sub-parallel sides and scarcely marked humeral angles. Surface shiny, with evident, transverse micro-striation only at the base of the segments, and with fine, not sparse puncturation on the sides.

Posterior margin of 6° visible abdominal tergite sub-rectilinear; posterior margin of 6° visible abdominal sternite prolongated in an evident median lobe ( Fig. 47 ). Tergite and sternite of the male genital segment as in Figs 48-49 . Aedeagus ( Fig. 50 ) 1,3 mm long, ovoidal elongated, with large median lobe and characteristic distal plate; parameres

proportionally short and narrow; inner sac with a long and narrow spine, a median, transverse spine and a long, sub-triangular area covered by minute scales.

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 Yunnan.

N o t e: The new species is related to M. grandis -group ( BORDONI 2002) for the external characters and in particular near M. pluvialis BORDONI 2002 from Borneo.

Figures

Figs 47-55: sixth visible abdominal sternite, tergite and sternite of the male genital segment, aedeagus (bar scale: 0,1 mm) of Metolinus guomen nov.sp. (47-50); sixth visible abdominal tergite and sternite, tergite and sternite of the male genital segment, aedeagus (bar scale: 0,1 mm) of Metolinus lebu nov.sp. (51-55).