Pseudobironium sinicum Pic, 1954

Löbl, Ivan & Tang, Liang, 2013, A review of the genus Pseudobironium Pic (Coleoptera: Staphylinidae: Scaphidiinae), Revue suisse de Zoologie 120 (4), pp. 665-734 : 731-732

Pseudobironium sinicum Pic, 1954

Pseudobironium sinicum Pic, 1954: 88 .

LECTOTYPE: ♀, NHRM, from CHINA, labelled: Kuatun, Fukien China 2.10.46 (Tschung Sen.) / Type (printed) Pseudobironium sinicum det. Pic, n. sp. (handwritten) (red) / Lectotype P. sinicum Pic det. Löbl 1998 (handwritten, “det. Löbl 19” printed / 9843 E 91 (printed, blue) / NHRS-JLKB 000020749 (printed). Lectotype designation: Löbl, 1999: 721.

PARALECTOTYPE: ♀, with the same locality data as the lectotype ( MHNG) .

REDESCRIPTION: Length 3.0 mm, width 2.05 mm. Head and most of body blackish, mouth-parts reddish, abdomen slightly lighter than most of body, with apical segments reddish-brown. Femora and tibiae dark brown, tarsi light brown. Maxillary palpi with palpomere IV about 4 times as long as wide, tapering. Head and pronotum very finely punctate, pronotal punctures not well delimited, much smaller than puncture intervals. Elytra lacking humps or impressions, with punctation coarser than that on pronotum, punctures fairly well delimited, distinctly coarser in middle than near bases, apices, along sutural striae and along lateral margins, with puncture intervals mostly about twice as large as puncture diameters. Prohypomera very finely punctate, not microsculptured. Mesoventrite lacking median ridge or stria, very finely punctate near margin and with several very fine striae. Metaventrite not microsculptured, with median part convex anteriad, flattened in apical half, surface near metacoxae swollen, punctation fairly coarse and dense, punctures to part larger than puncture intervals, covering most of surface including posterior third of mesal area; anterior two thirds of mesal area impunctate. Lateral parts of metaventrite very finely punctate. Submesocoxal area as long as interval to metacoxa. Metacoxal process flat, lacking tubercle, not microsculptured, with few fine punctures, margin distinctly concave. Mesotibiae and metatibiae moderately curved, mesotibial ventral spur straight. Abdominal sternite 1 extremely finely punctate and with distinct punctulate microsculpture. Lateral impressions large, foveiform, fairly deep. Following sternites lacking basal wrinkles, with punctulate microsculpture.

DISTRIBUTION: China: Fujian.

COMMENTS: The species may be distinguished from its congeners by the comparatively large mesocoxal areas that are as long as the shortest interval between their margins and the metacoxae. The lectotype has the antennae and right protarsus broken off, the paralectotype is missing the head. The additional specimen from the same locality reported in Löbl (1999) is not conspecific.