Quedius (Raphirus) bleptikos, Tephens, 2015

Tephens, 2015, Contributions to the knowledge of the Quediina (Coleoptera: Staphylinidae, Staphylinini) of China. Part 52. Genus Quedius STEPHENS, 1829. Subgenus Raphirus STEPHENS, 1829. Section 14. Genus Quetarsius SMETANA, 1996. Section 1., Linzer biologische Beiträge 47 (2), pp. 1855-1864 : 1857-1859

Quedius (Raphirus) bleptikos nov.sp. ( Figs 9-17 )

T y p e l o c a l i t y Yunnan, Nabanhe Nature Reserve, Bengganghani, Nanmugahe, 22°08'383’’N 100°34’126E, 1700 m.

T y p e m a t e r i a l. Holotype, male and allotype, female: « China: Yunnan Prov. Nabanhe N. R. Bengganghani, Nanmugahe N22.08.383 E100.34.126 / Alt. 1700 m 13-XI-2008 HU Jia-Yao & TANG Liang leg.» . Holotype I SNUC, allotype in ASC. Paratypes: Yunnan: same data as holotype, 1 ( ASC) ; Nabanhe N. R., Chuguohe, Bengganghani , 1750 m, 28-IV-2009, Jia-Yao Hu & Zi-Wei Yin leg., 1 ( SNUC) .

D e s c r i p t i o n. Body deep black with forebody shiny; maxillary and labial palpi with first segment piceous, following segments brunneotestaceous, antennae black, legs black with tarsi testaceobrunneous. Head of rounded shape, with entirely rounded posterior angles, wider than long (ratio 1.28); eyes very large and convex, tempora reduced to a narrow space between posterior margin of eye and posterior margin of head; no additional setiferous punctures between anterior frontal punctures; posterior frontal puncture touching posteriomedial margin of eye, one puncture between it and posterior margin of head; temporal puncture quite fine, touching posterior margin of eye; surface of head with extremely fine, superficial microsculpture of transverse waves with intermixed micropunctulation. Antenna moderately long, segment 3 vaguely longer than segment 2 (ratio 1.10), following segments longer than wide, gradually becoming shorter, last segment slightly shorter than two preceding segments combined. Pronotum at widest point wider than long (ratio 1.13), broadly rounded basally, markedly narrowed anteriad; dorsal rows each with three punctures; sublateral rows each with one puncture near anterior margin of pronotum, therefore situated considerably before level of large lateral puncture; surface of pronotum with microsculpture similar to that on head to becoming quite rudimentary and difficult to observe on disc of pronotum. Scutellum without punctures, with dense mirosculpture of transverse waves. Elytra at suture vaguely shorter than pronotum at midline (ratio 0.92), at sides as long as pronotum at midline; punctuation very coarse and moderately dense, becoming finer and denser toward each lateral margin and on declivous portion of each elytron, transverse interspaces between punctures on disc about as large as diameters of punctures; surface between punctures without microsculpture; pubescence black. Abdomen with tergite 7 (fifth visible) with distinct whitish apical seam of palisade fringe; tergite 2 (in front of first fully visible tergite) impunctate; punctures on tergites distinctly finer than those on elytra, slightly elongate, punctuation finer than that on elytra, becoming sparser and finer toward apical margin of each tergite, and in general toward apex of abdomen; pubescence black; surface between punctures with extremely fine and dense, here and there rudimentary, microsculpture of transverse striae.

M a l e. First four segments of front tarsus moderately dilated, sub-bilobed, each densely covered with tenent setae ventrally, segment 2 about as wide as apex of tibia, segment 4 narrower than preceding segments. Sternite 7 with apical margin vaguely sinuate, with setae at apical margin as in Fig.10 . Sternite 8 with two long setae at each side, with rather deep and wide medioapical emargination, small triangular area before emargination flattened and smooth ( Fig. 10 ). Genital segment with tergite 10 narrow, markedly narrowed toward subtrunctate apex, setose only on apical portion ( Fig. 11 ); sternite 9 rather elongate, with short and wide, rounded basal portion, apical portion with obtuse apex, setose as in Fig. 12 . Aedoeagus ( Figs 13-16 ) elongate, median lobe subparallelsided in middle portion, anteriorly rather suddenly attenuated into small, narrow apical portion with subacute apex, with distinct carina below apex on face adjacent to paramere ( Figs 14, 15 ); paramere large, covering almost entire median lobe, with narrowly arcuate apex vaguely exceeding apex of median lobe; four minute setae at apex and one much longer seta at each lateral margin below apex; sensory peg setae on underside of paramere not numerous, forming short row of five or six setae along each lateral margin of apical portion of paramere ( Fig. 16 ).

F e m a l e. First four segments of front tarsus similar to those of male, but much less dilated, segment 2 slightly narrower than apex of tibia. Tergite 10 of female genital seg-

ment very narrow, conspicuously narrowed toward acute apex, bearing numerous long, strong setae on apical half ( Fig. 17 ).

Length 7.0- 7.2 mm.

E t y m o l o g y. The specific epithet is the Greek noun βλεπτικος (one who is sharp seeing) in apposition. It refers to the large eyes of the species.

G e o g r a p h i c a l d i s t r i b u t i o n Quedius bleptikos is at present known only from the Nabanhe Natural Reserve in southernmost Yunnan.

B i o n o m i c s. Nothing is known about the collecting circumstances of the specimens of the original series.

C o m m e n t s. The species is quite characteristic, in addition to both the male and female sexual characters (including the unique configuration of the apical setae of paramere), by the combination of the following characters: deep black body with shiny forebody, very large and convex eyes almost eliminating tempora, coarsely punctate elytra, and characteristic punctuation of abdominal tergites (see description).

The allotype is missing last three segments of left antenna.

Figures

Figs 8-17: Quedius liangtangi nov.sp.: (8) tergite 10 of female genital segment. Quedius bleptikos nov.sp.: (9) apical portion of male sternite 7 (only setae at and near apical margin are shown); (10) apical portion of male sternite 8; (11) tergite 10 of male genital segment; (12) sternite 9 of male genital segment; (13) aedoeagus, ventral view; (14) apical portion of median lobe, paramere removed; (15) apical portion of median lobe, lateral view, paramere removed; (16) apical portion of underside of paramere with sensory peg setae; (17) tergite 10 of female genital segment.