Oxyporus (Oxyporus) fentianae, Li & Li & Wang & Li & Ze, 2018

Li, Guo-Feng, Li, Hong-Wei, Wang, Chun-Mei, Li, Hua-Feng & Ze, Sang-Zi, 2018, Two new species of the genus Oxyporus Fabricius (Coleoptera: Staphylinidae: Oxyporinae) in Yunnan Province, China, Zootaxa 4369 (1), pp. 93-100 : 94-97

Oxyporus (Oxyporus) fentianae sp. nov.

( Figs. 1A–D , Figs. 2A–E )

Type material. Holotype: CHINA: Yunnan Prov. : ♂, Mojiang County, Tuan tian village, alt. 1857m, 23°36′N, 101°17′E, 23–31-July-2017, Wang Fen-tian leg. Paratypes: CHINA: Yunnan Prov.: 1♂, 3♀♀, same data as the Holotype ( YFTC) .

Description. BL: 10.73 mm, FBL: 5.42 mm, ML: 1.75 mm, HL: 1.75 mm, HW: 2.32 mm, TL: 0.95 mm, AL: 1.85 mm, LW: 0.83 mm, PL: 1.75 mm, PW: 2.03 mm, ELL: 2.26 mm, ELW: 2.87 mm, EYL: 0.79 mm. Body moderately stout, surface almost smooth and glossy. Color orange yellow, with mandibles, head, pronotum (except 2 small irregular reddish yellow spots at left and right of disc), scutellum, abdomen (except sides of segments 3–6 and basal portion of segment 8) black, each elytron bearing subtriangular black marking at outer apical angle extending from 4/5 of lateral margin to middle of posterior margin. ( Figs. 1A–B ).

Male: Head subquadrate, wider than long (ratio 1.33), broader than pronotum (ratio 1.14), slightly widened posterad behind eyes, posterior angles obtuse. Mandibles 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 slightly wider than length of an eye (ratio 1.05). Frons broadly, shallowly bi-impressed between antennal insertions. Antennae slightly longer than head (ratio 1.06); 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 0.34: 0.13: 0.16: 0.14: 0.13: 0.14: 0.14: 0.13: 0.14: 0.13: 0.19. Eyes large and convex. Vertex nearly smooth, two setiferous punctures near inner margin of eye, one anterior and one posterior. Temples longer than eyes seen from above (ratio 1.20).

Pronotum subquadrate, slightly transverse, wider than long (ratio 1.16), shorter (ratio 0.77) and narrower (ratio 0.71) than elytra, lateral margins strongly bisinuate at anterior 1/3 and in the middle and subarcuately narrowed posterad, widest at about anterior 3/5; disc almost impunctate, devoid of microsculpture, with 1 deep, transverse depression located just before middle, which is widened to both sides, and additionally, surface bearing 2 vague longitudinal depressions in middle just behind the transverse depression, which do not reach to posterior margin, and each lateral side with 2 foveae, at anterior 1/3 and middle; 6 setiferous punctures at anterior margin, 2 at posterior margin and 3 at each lateral margin. Scutellum impunctate, rounded at apex, surface almost smooth.

Elytra wider than long (ratio 1.27), slightly widened apicad; each elytron with 1 row of evenly spaced small punctures along suture, 2 longitudinal rows of coarse variably spaced punctures medially, and several, scattered coarse punctures to either side of rows; apical, lateral, and posterior margins bearing a few short setae; humeri produced forward and convex dorsad. Hind wings developed.

Abdomen with tergites 3–4 each with a pair of pruinose spots at middle and tergites 3–5 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 emarginate at middle ( Fig. 1C ).

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. 2A–C ); the right lobe and left lobe without minute seta at each apex ( Figs. 2D–E ).

Female: Similar to male ( Fig. 1B ), but head smaller and oval; mandibles slightly shorter; pronotal lateral margins slightly sinuate in the middle and each side with 1 fovea in the middle; posterior margin of sternite 7 nearly straight; posterior margin of sternite 8 slightly arcuately produced. ( Fig. 1D ).

Remarks. Oxyporus fentianae n. sp. is readily distinguished from all other congeners previously recorded from China: O. altus Huang, Li et al, 2006 ( China: Xizang, Sichuan), O. altus yangae Zheng, 2010 ( China: Sichuan), O. angustatus Zheng, 2010 ( China: Sichuan) O. angusticeps Bernhauer, 1938 ( China: Chinkiang, Japan), O. atratulus Zheng, 2010 ( China: Sichuan), O. aureomarginatus Zheng, 2010 ( China: Sichuan), O. bambusicolus Zheng, 1997 ( China: Sichuan), O. basiventris Jarrige, 1948 ( China: Heilongjiang, Japan), O. beichuanus Zheng, 2010 ( China: Sichuan), O. bifasciarius Zheng, 2010 ( China: Yunnan), O. bingshengae Li, Wang et al, 2015 ( China: Yunnan), O. chenpengi Li, 1992 ( China: Jilin), O. erlangshanus Zheng, 2010 ( China: Sichuan), O. femoratus Zheng, 2010 ( China: Yunnan), O. formosanus Adachi, 1939 ( China: Taiwan), O. fungalis Zheng, 1992 ( China: Sichuan), O. germanus Sharp, 1889 ( China: Yunnan, Heilongjiang, Japan, Korea), O. hailuogou Zheng, 2010 ( China: Sichuan), O. humerocroceus Huang, Li et al, 2006 ( China: Sichuan), O. humerosus Zheng, 2010 ( China: Sichuan), O. itoi Hayashi, 1985 ( China: Taiwan), O. kunmingius Li, Wang et al, 2015 ( China: Yunnan), O. lii Zheng, 2011 ( China: Yunnan), O. liuae Zheng, 2010 ( China: Sichuan), O. loloshanus Hayashi, 1985 ( China: Taiwan), O. longipes Sharp, 1889 ( China: Heilongjiang, Japan, Korea), O. maculiventris Sharp, 1889 ( China: Heilongjiang, Japan), O. maxillosus Fabricius, 1793 ( China: Jilin, Finland, Sweden, Britain, Denmark, France, Germany, Switzerland, Austria, Italy, Syria, Russia, Japan, Mongolia), O. meigu Zheng, 2011 ( China: Sichuan), O. niger Sharp, 1889 ( China: Jilin, Japan, Korea), O. nigerrimus Hayashi, 1975 ( China: Taiwan), O. nigricollis Zheng, 1992 ( China: Sichuan), O. procerus Kraatz, 1879 ( China: Heilongjiang, Russia), O. puerius Li, Zheng et al, 2011 ( China: Yunnan), O. riparius Zheng, 1997 ( China: Yunnan), O. rufus Linné, 1758 ( China: Jilin, Finland, Sweden, Britain, Denmark, France, Germany, Switzerland, Austria, Italy, Hungary, Czech, Slovakia, Poland, Romania, Georgia, Iran, Russia, Japan, Korea), O. shibatai Hayashi, 1975 ( China: Taiwan), O. sinicus Huang, Li et al, 2006 ( China: Zhejiang, Sichuan), O. taiwanus Hayashi, 1975 ( China: Taiwan), O. transversesulcatus Bernhauer, 1933 ( China: Sichuan), O. trisulcatus Bernhauer, 1943 ( China: Taiwan), O. wanglangus Zheng, 1992 ( China: Sichuan), O. yanae Zheng, 2011 ( China: Sichuan), O. yulong Zheng, 2011 ( China: Yunnan), but it is similar to O. wangae Li, Wang et al, 2017 ( China: Yunnan), in the color of the body, and can be distinguished from the latter by the following characters (see key below): pronotal disc bearing 2 small irregular reddish yellow spots; abdomen (except sides of segments 3–6 and basal portion of segment 8) black; apical portion of abdominal tergite 8 orange yellow; posterior margins of sternites 8 very slightly and broadly emarginate at middle; right and left paramere without minute seta at each apex.

Etymology. The specific epithet is warmly dedicated to the collector of the type specimen, Fen-Tian Wang, Li’s dear mother, to celebrate her upcoming 65th birthday.

Habitat and Distribution. The new species was found under pileus of gilled mushrooms in Amanita hemibapha Berk & Broome, 1887 (Fungi: Basidiomycota: Agaricomycotina: Agaricomycetes: Agaricomycetidae : Agaricales : Amanitaceae ). It is at present only known from the type locality in southwest Yunnan Province, China.

Figures

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

FIGURE2. Oxyporus fentianae 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