Olophrinus parastriatus Chang, Yin & Li, 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 : 308-313

Olophrinus parastriatus Chang, Yin & Li , sp. nov.

( Figs 5–7 , 18 )

Type material. HOLOTYPE: ♁, CHINA: YUNNAN: ‘China: Yunnan Prov., Nabanhe N. R. (ṁẘñssṂüaeffl), Xiao-nuo-you-xia-zhai (ṬṞĦ Tḃ), N22°14.121′, E100°37.09′, alt. 950 m, 20.xi.2008, J.-Y. Hu & L. Tang leg. ’. PARATYPES: CHINA: YUNNAN: 1 ♁, ‘ China: Yunnan Prov., Nabanhe N. R., Manfei (ḎŘ), alt. 700 m, 05.v.2009, J.-Y. Hu & Z.-W. Yin leg.’ ( SNUC).

Diagnostic description. Male. Habitus as in Figs 5A, 5B ; body convex, TBL 5.32–6.84 mm, FBL 3.77–4.26 mm; head and elytra black, antennomeres 1–3, and tarsi yellowish-brown, antennomeres 4–11, pronotal disc, and abdomen darkish-brown, most parts of legs reddish-brown. Head ( Figs 6A, 6B ) sub-triangular, HL 0.62–0.86 mm, HW 1.03–1.08 mm, with fine punctures and microsculpture consisting of transverse waves; eyes prominent, EyL 0.34–0.36 mm; antennae elongate, AnL 2.44 mm, relative lengths of antennomeres 1–11: 2.4: 1.0: 1.75: 2.0: 1.83: 1.91: 2.0: 1.66: 1.75: 1.75: 2.25. Pronotum ( Fig. 6C ) strongly transverse, PL 1.23–1.38 mm, PW 2.46–2.59 mm, PL/PW 0.50–0.53, with punctures and microsculpture as of head. Elytra ( Figs 6D, E ) transverse, EL 1.77–1.81 mm, EW 2.48–2.62 mm, EL/EW 0.69–0.71, with microsculpture as of head, each elytron with seven complete and two short outer rows of punctures.Abdominal ( Fig. 6F ) surface with coarse punctures, and microsculpture consisting of transverse waves; tergite VIII ( Fig. 7A ) with six relatively short lobes, deeply and broadly incised between inner lobes and median ones; tergite IX ( Fig. 7B ) divided laterally to four lobes; sternite VI ( Figs 7 C–D) with posterior margin broadly emarginate, granules evenly arranged in sub-triangular area; sternite VII ( Figs 7 E–F) with posterior margin slightly emarginate, granules evenly arranged in semicircular area; sternite VIII ( Fig. 7G ) with four lobes, shallowly incised between inner and outer lobes, midlength 1.51 times as long as depth of incision; sternite IX elongate and asymmetric ( Fig. 7H ). Length of aedeagus ( Figs 7 I–K) 1.42 mm, parameres short, asymmetric, right paramere distinctly broader than left one in ventral view, median lobe broad at base and narrowing toward apex.

Female. Unknown.

Comparative notes. Olophrinus parastriatus is most similar to O. striatus in sharing the head, pronotum, and elytra with microsculpture consisting of transverse waves, and the right paramere of the aedeagus much broader than the left one. The new species may be separated by the much deeper emargination of male sternite VI, and the relatively much shorter parameres of the aedeagus without a preapical denticle on the ventral surface.

Distribution. China: Yunnan ( Fig. 18 ).

Etymology. The new specific epithet (para + striatus ) refers to the morphological resemblance of the new species to O. striatus ; adjective.

Figures

Fig. 5. Habitus of Olophrinus parastriatus sp. nov.A – male; B – female. Scale bars: 1.0 mm.

Fig. 6. Morphology of Olophrinus parastriatus sp. nov., 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. 7. Male diagnostic features of Olophrinus parastriatus sp. nov.A – tergite VIII; B – tergites IX–X; C, D – sternite VI; E, F – sternite VII; G – sternite VIII; H – sternite IX; I–J – aedeagus, ventral (I) and lateral (J); K – apical portion of aedeagus. Scale bars: 0.5 mm.

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.