A study on the genus Stenus Latreille from Zhuji City of Zhejiang, East China (Coleoptera, Staphylinidae) Author Zhao, Tie-Xiong text Zootaxa 2017 2017-09-20 4323 1 25 38 journal article 32044 10.11646/zootaxa.4323.1.2 6d9c06e6-98d8-4523-86cb-3748d1c1ea4b 1175-5326 897317 8E74915A-6F94-48F8-B854-Bbb9E7F43Bba Stenus zhejiangensis Tang, Liu & Zhao , new species ( Figs. 3 , 13 –16) Type material. Holotype . China : Zhejiang : Zhuji : ♂ , glued on a card with labels as follows: “ China : Zhejiang Province , Zhuji City , Dongbaishan , mixed leaf litter, sifted, alt. 300m , 31.III.2013 , Tie-Xiong Zhao leg.” “ Holotype / Stenus zhejiangensis / Tang , Zhao & Luo ” [red handwritten label] ( SHNU ) . Description. Body blackish with clypeus and labrum dark reddish brown. Antennae reddish brown with club infuscate, maxillary palpi and legs reddish brown. BL: 3.8 mm , FL: 2.2 mm . HW: 0.75 mm , PL: 0.63 mm , PW: 0.59 mm , EL: 0.83 mm , EW: 0.83 mm , SL: 0.64 mm . Head 0.93 times as wide as elytra; interocular area with two deep longitudinal furrows, median portion convex, extending a little beneath the level of inner eye margins; punctures round to elliptic, mostly well delimited, similar in size, diameter of punctures as wide as apical cross section of antennal segment II; interstices partially reticulated, distinctly narrower than half the diameter of punctures. Paraglossa oval. Pronotum 1.06 times as long as wide; disk slightly uneven, with shallow median longitudinal furrow; punctures slightly confluent, different in size, large punctures similar to those of head; interstices partially reticulated, narrower than half the diameter of punctures. Elytra as long as wide; disk relatively even with shallow humeral impression and shallow sutural impression; punctures mostly similar in size and slightly larger than the large punctures of pronotum, interstices mostly shallowly reticulated. Legs with tarsomeres IV deeply bilobed. Abdomen cylindrical; segment III with paratergites very narrow and punctate, directed ventrad, segments IV– VI with tergites and sternites fused with suture very indistinct, tergite VII with apical membranous fringe; punctures round to elliptic, becoming slightly smaller posteriad; interstices reticulated, mostly narrower than half the diameter of punctures on tergite III–V. Male. Sternite VII with posteriomedian portion flattened and posterior margin slightly emarginated at middle; sternite VIII ( Fig. 14 ) with very shallow emargination at middle of posterior margin; sternite IX ( Fig. 13 ) with long apicolateral projections, posterior margin serrate and roundly emarginated. Aedeagus ( Figs. 15 , 16) slender; apical sclerotized area with a round apical projection at middle; expulsion clasps large, strongly sclerotized; parameres much longer than median lobe, tapering apicad at about half, each with 5 subapical setae and 8 basal setae on apico-internal margins. Female. Unknown. Distribution. China ( Zhejiang ). Remarks. The species belongs to Stenus cephalotes group and it is the first species of the group with fully developed hind wings. Etymology . The specific name is derived from the type locality of this species.