Olophrinus qian Chang, Yin, Li & Schülke, 2019

Chang, Yuan, Yin, Zi-Wei, Li, Li-Zhen & Schülke, Michael, 2019, A review of the genus Olophrinus from China (Coleoptera: Staphylinidae: Tachyporinae), Acta Entomologica Musei Nationalis Pragae 59 (1), pp. 307-324 : 317-319

Olophrinus qian Chang, Yin, Li & Schülke , sp. nov.

( Figs 15–17 , 18 )

Type material. HOLOTYPE: ♁, CHINA: GUIZHOU: ‘China: Guizhou, Zunyi City , (Suiyang County Ō ṚH), Kuankuoshui N. R. (ĒāķssṂüae ffl), Gongtonggou (AEÑḿ), nr. Dadong (†ḄDzã), 18.viii.2010, 1550 m, T. Feng & Z.-W. Yin leg.’ ( SNUC) . PARATYPES: CHINA: GUIZHOU: 9 ♁♁ 7 ♀♀, same collecting data as holotype; 7 ♁♁ 4 ♀♀, also from Kuankuoshui, ‘Houshan ( ÜƜ), 1550 m, 15.viii.2010, Z.-W. Yin leg.’ ( SNUC). YUNNAN: 1 ♁ 3 ♀♀, ‘ CHINA: Yunnan, mountains WNW Wuding, 25°38’45’’N, 102°06’55’’E, 2390 m, mixed forest margin with alder and pine, litter sifted, 1.IX.2014, Schülke [ CH 14-12a]’ (cSch); 2 ♁♁ 1 ♀, ‘ CHINA [12a] – Yunnan, mt. WNW Wuding, mix. forest, 25°38’45’’N, 102°06’55’’E, 2390 m, 1.IX.2014, V. Assing’ (cAss, cSch); 1 ♀, ‘ CHINA [12] – Yunnan, mt. WNW Wuding, mix. forest, 25°38’45’’N, 102°06’55’’E, 2390 m, 18.VIII.2014, V.Assing’ (cAss); 1 ♀, ‘ CHINA: Yunnan [ CH 07-35], Dali Bai Auton. Pref., Wuliang Shan, 9 km SW Weishan, 2450–2500 m, 25°10′14″N, 100°14′22″E, W slope, oaks and pines, sifted, 13.VI.2007, M. Schülke’ (cSch); 1 ♀, ‘ CHINA: Yunnan, Pu’er Pref., Ailao Shan, 37 km NW Jingdong, 24°45′12″N, 100°41′24.5″E, devastated forest remnant, litter & dead wood sifted, 13.IX.2009, leg. M. Schülke [ CH 09-48]’ (cSch).

Diagnosis description. Male. Habitus as in Fig. 15A ; body slightly convex, TBL 7.07–7.90 mm, FBL 4.90–5.32 mm; head, elytra and abdomen black, antennae and tarsi yellowish-brown, pronotal disc, and most parts of legs reddish-brown. Head ( Figs 16A, 16B ) sub-pentagon, HL 0.84–1.11 mm, HW 1.29–1.32 mm, with microsculpture consisting of small isodiametric or nearly isodiametric meshes; eyes prominent, EyL 0.34–0.37 mm; antennae elongate, AnL 2.48–2.51 mm, relative lengths of antennomeres 1–11: 1.62: 1.00: 1.56: 1.25: 1.68: 1.56: 1.31: 1.25: 1.50: 1.18: 1.56. Pronotum ( Fig. 16C ) strongly transverse, PL 1.52–1.71 mm, PW 3.20–3.22 mm, PL/PW 0.47–0.53, with microsculpture as of head. Elytra ( Figs 16D, E ) transverse, EL 2.19–2.36 mm, EW 3.23–3.34 mm, EL/EW 0.65–0.73, with microsculpture consisting of transverse waves, each elytron with five complete and one additional shorter rows of punctures. Abdominal surface ( Fig. 16F ) with coarse punctures, and with microsculpture as elytra; tergite VIII ( Fig. 17A ) with six relatively short lobes, deeply and narrowly incised between inner lobes and median ones; tergite IX ( Fig. 17B ) divided laterally to four lobes; sternite VI ( Figs 17 C–D) with posterior margin shallowly emarginate, thickened setae arranged along emargination, short bristles arranged in sub-triangular area; sternite VII ( Figs 17 E–F) with posterior margin deeply and broadly emarginate, peg setae continuously arranged along emargination; sternite VIII ( Fig. 17G ) with four lobes, deeply incised between inner lobes, mid-length 1.06 times as long as depth of incision; sternite IX elongate and asymmetric ( Fig. 17H ). Length of aedeagus ( Figs 17 I–J) 2.07 mm, parameres short, and asymmetric, left paramere slightly broader than right one in ventral view, each with preapical denticle on ventral surface; median lobe broad at base and narrowing toward apex.

Female. General habitus ( Fig. 15B ) similar to male. Measurements: TBL 7.85–8.27 mm, FBL 4.80–5.26 mm, HL 1.07–1.08 mm, HW 1.28–1.31 mm, EyL 0.35–0.36 mm, AnL 2.42–2.48 mm, PL 1.58–1.63 mm, PW 3.09–3.16 mm, PL/PW 0.50–0.52, EL 2.24–2.28 mm, EW 3.12–3.19 mm, EL/EW 0.71–0.72. Tergite VIII ( Fig. 17K ) with five lobes, inner lobe longer than others, outer lobes short; sternite VIII ( Fig. 17L ) with six lobes, fimbriate lobes longer than others; styli as in Fig. 17M .

Comparative notes. Olophrinus qian is similar to O. nepalensis in sharing the head and pronotum with meshlike microsculpture, each elytron with five complete and one additional shorter row of punctures, and presence of a preapical denticle of the parameres. The new species can be separated by the much shallower incision between the inner and median lobes of male tergite VIII, the parameres of the aedeagus each with a preapical denticle, and the much broader base of the inner lobe of female tergite VIII.

Etymology. ‘Qian (Ŗ)’ is an abbreviation for Guizhou Province, where the type locality is located; noun in apposition.

Distribution. China: Guizhou, Yunnan ( Fig. 18 ).

Figures

Fig. 15. Habitus of Olophrinus qian sp. nov.:A – male; B – female. Scale bars: 2.0 mm.

Fig. 16. Morphology of Olophrinus qian sp. nov., male, showing microsculpture of various body parts: A, B – head; C – pronotum; D, E – elytron; F – tergites III–V. Scale bars: 0.5 mm in A; 1.0 mm in D.

Fig. 17. Diagnostic features of Olophrinus qian sp. nov. (A–J – male; K–M – female). A, K – tergite VIII; B – tergites IX–X; C, D – sternite VI; E, F – sternite VII; G, L – sternite VIII; H – sternite IX; I–J – aedeagus, ventral (I) and lateral (J); M – styli. Scale bars: 0.5 mm in A–H, K–L; 1.0 mm in I–J; 0.2 mm in M.

Fig. 18. Distribution of Olophrinus in China. 1 – O. parastriatus sp. nov.; 2 – O. striatus Shibata, 1992; 3 – O. setiventris sp. nov.; 4 – O. lantschangensis Schülke, 2006; 5 – O. qian sp. nov.; 6 – O. nepalensis Campbell, 1993; 7 – O. malaisei Scheerpeltz, 1965; 8 – O. suzukii Shibata, 1992. Squares represent published records; circles are new data.