Oxyporus (Oxyporus) kunmingius, Li, Guo-Feng, Wang, Chun-Mei, Li, Hong-Wei & Hou, Yun-Ping, 2015

Li, Guo-Feng, Wang, Chun-Mei, Li, Hong-Wei & Hou, Yun-Ping, 2015, A new species of the genus Oxyporus Fabricius (Coleoptera: Staphylinidae: Oxyporinae) in Yunnan, China, Zootaxa 3926 (4), pp. 595-599 : 596-598

Oxyporus (Oxyporus) kunmingius sp. nov.

( Figs. 1 A–D, Figs. 2 A–E)

Type material. Holotype: CHINA:Yunnan Prov.: ♂, Kunming city, Song hua-ba village, alt. 1352m, 25°10′N, 102°47′E, 12-28-July-2014, Li Guo-feng leg. ( YFTC). Paratypes: CHINA: Yunnan Prov.: 5♂♂, 3♀♀, same data as the Holotype ( YFTC).

Description. BL: 7.74 mm. HL: 1.46 mm, HW: 1.85 mm, TL: 0.68 mm, AL: 1.52 mm, LW: 0.72 mm, PL: 1.30 mm, PW: 1.72 mm, ELL: 1.96 mm, ELW: 2.67 mm, EYL: 0.64 mm. Body moderately stout, surface almost smooth and glossy. Color orange yellow, with mandibles, head, pronotum, scutellum, abdomen (except sides of segments 3–5) black and elytra bearing subtriangular black marking at outer apical angle extending from the posterior 4/5 of lateral margin to middle of posterior margin and meeting with each other by narrow black fascia near posterior margin. ( Figs. 1 A–B).

Male: Head subquadrate, wider than long (ratio 1.27), slightly broader than pronotum (ratio 1.08) and longer than pronotum (ratio 1.12), gently widened posteriad behind eyes, posterior angles obtuse. Mandibles elongate, almost as long as head, moderately broad, inner edges evenly curved to acute apices. Labrum broadly and deeply emarginate at middle. Clypeus broadly and shallowly emarginate at middle. Maxillary palpi with first segment shortest, second longer than third, third slightly wider than last and almost equal in length, and apical segment of labial palpi wider than length of an eye (ratio 1.13). Frons broadly, shallowly tri-impressed between antennal insertions. Antennae slightly longer than head (ratio 1.04); segments 1–4 elongate, 5–10 transverse, slightly asymmetrical and flattened, apical segment narrower than preceding segment, each segment with long setae near apex, and segments 5–10 glabrous medially and covered with fine setae laterally, the relative length of segments from base to apex as 1.90: 0.92: 1.04: 1.02: 0.91: 0.95: 1.03: 0.99: 0.99: 0.97: 1.52. Eyes large and convex. Vertex nearly smooth, two setiferous punctures near inner margin of eye, one anteriad and one posteriad. Temples slightly longer than eyes seen from above (ratio 1.06).

Pronotum subhexagonal, slightly transverse, wider than long (ratio 1.32), shorter (ratio 0.66) and narrower (ratio 0.64) than elytra, and arcuate at sides, widest at anterior 1/3; disc almost impunctate, devoid of microsculpture, with one transverse depression located just before middle, which is widened to both sides, and additionaly, surface bearing three vague longitudinal depressiions in middle just behind the transverse depression, which does not reach to posterior margin, and each lateral side with a fovea in the middle; 8 setiferous punctures bearing at anterior margin, 3 ones at each lateral margin. Scutellum impunctate, rounded at apex, surface almost smooth.

Elytra wider than long (ratio 1.36), slightly widened apicad; each elytron with a row of evenly spaced small punctures along suture, two longitudinal rows of coarse variably spaced punctures medially and several, scattered coarse punctures to either side of rows; lateral and apical margins bearing a few short setae; humeri produced forward and convex above. Hind wings developed.

Abdomen gradually narrowed apicad; tergites 3–4 each with a pair of small pruinose spots in the middle and tergites 3–6 each with 1–2 irregular setiferous punctures along lateral margin; punctation of tergites very sparse and vague, surface between punctures with exceedingly fine and dense microsculpture of transverse striae; posterior margins of sternites 7–8 very slightly and broadly emarginated at middle. ( Fig. 1 C).

Aedeagus slightly asymmetrical and moderately sclerotized; median lobe somewhat widened apicad and slightly narrowed in middle, with apical margin rounded, slightly twisted to right; parameres relatively long and slender, gradually narrowed apicad, ( Figs. 2 A–C); the right lobe with one minute seta and the left one without seta at each apex. ( Figs. 2 D–E).

Female: Similar to male, but head oval, smaller and less transverse; mandibles slightly shorter; posterior margin nearly straight in sternite 7; sternite 8 larger and posterior margin of it arcuately produced. ( Fig. 1 D)

Remarks. Oxyporus kunmingius n. sp. is similar to O. transversesulcatus Bernhauer from Lijiang City (Yulongxueshan Natural Reserve), Yunnan, China, in the color of the body, but can be distinguished from the latter by the following characters (see key below): elytra with subtriangular black marking at outer apical angle extending from the posterior four fifths of lateral margin to middle of posterior margin; basal portion of abdomeninal tergite 8 black; right paramere with one minute seta and the left one with one without seta at each apex.

Etymology. The specific epithet is derived from the type locality “Kunming”. Habitat and Distribution. The new species was found in fungi. It is at present only known from the type locality in eastern Yunnan, China.

Figures

FIGURE 1. Oxyporus kunmingius sp. nov. A. male habitus, dorsal view. B. female habitus, dorsal view. C. male sternite 8. D. female sternite 8. Scale bars: as above.

FIGURE 2. Oxyporus kunmingius sp. nov. A. ventral view of aedeagus. B. lateral view of aedeagus. C. dorsal view of aedeagus. D. apical portion of left paramere of aedeagus. E. apical portion of right paramere of aedeagus. Scale bars: as above.