Ocypus, Zhou, 2017

Zhou, Hong-Zhang, 2017, Taxonomy of the subgenus Ocypus Leach (Coleoptera: Staphylinidae: Staphylinini) and three new species from China, Zootaxa 4312 (2), pp. 293-310 : 298-301

2. Ocypus (s. str.) aglaosemanticus sp. nov.

( Figs. 2-1, 2-2 )

Type material. Holotype male, CHINA: Fujian Province: Chongan County, Xingcun , 1000-1200 m, 2.VI.1960, coll. Shengqiao Jiang (IZ-CAS).

Measurements. Body length: 19.4 mm. CL: 0.91; EL: 4.09; ELS: 2.56; EW: 4.40; HL: 2.75; HW: 3.44; PO: 1.50; PL: 3.71; PW: 3.54.

Description. Medium-sized species. Body robust, entirely black; maxillary and labial palpi brunneous; antennae black, with basal portion of segment 2 and segments 4 to 8 relatively paler, tending to be reddish-brown; legs black, with paler tibiae; protibiae and protarsi covered with dense brown pubescence; pubescence of dorsal side of head, pronotum, elytra and abdominal tergites black.

Head of rounded quadrangular shape, wider than long (ratio 1.25), widest at about middle portion, with rounded posterior angles. Eyes moderately large and slightly protruding, considerably shorter than tempora (ratio 0.61) in dorsal view. Punctation and pubescence on dorsal surface of head relatively dense and fine, puncture intervals smaller than diameters of punctures; impunctate midline only vaguely present on posterior half of head. Gular sutures subcontiguous in middle and posterior portion. Antenna moderately long, segment 3 longer than segment 2 (ratio 1.32), segments 4 to 9 distinctly longer than wide, gradually becoming shorter, segment 10 slightly longer than wide, segment 11 shorter than segment 10. Pronotum about as long as wide (ratio 1.05), slightly narrowed anteriad from anterior fourth; narrow marginal groove disappearing downwards at anterior third of pronotal length; disc with impunctate midline clearly present on anterior half, gradually becoming vaguer towards basal portion; punctation and pubescence on disc about same as that on dorsal surface of head. Pronotal hypomeron lacking microsetae. Scutellum finely punctate and setose on entire surface. Elytra relatively long, elytral length distinctly shorter (ratio 0.69) along suture but slightly longer (ratio 1.10) along sides than pronotum along midline, vaguely dilated posteriad and not depressed at base; punctation much finer and denser than that on disk of head, combined with very dense microsculpture. Wings fully developed. Abdominal tergite 2 with punctures and pubescence only along apical margin; all visible abdominal tergites finely and densely punctate and pubescent; no yellowish tomentose pubescence on visible tergites 4 and 5.

Male. Abdominal sternite 8 with medioapical emargination shallow and obtuse ( Fig. 2-2 H). Sternite 9 narrow and elongated, with deep and obtuse apical emargination ( Fig. 2-2 G). Tergite 10 elongated, with shovel-like apical portion, sparsely setose ( Fig. 2-2 E). Aedeagus elongate and simple, shaped as in Figs. 2-1 B, C, 2-2 B-D; apical portion of median lobe finger-like ( Fig. 2-2 F); paramere simple, not reaching apex of median lobe, with apical portion asymmetrically rounded; sensory peg setae on underside of paramere closely arranged in apical portion, almost filling all the space of apex of paramere, not numerous ( Figs. 2-1 D, 2-2 A).

Female. Unknown.

Distribution. Ocypus (s. str.) aglaosemanticus sp. nov. is at present known only from the type locality in the north of Fujian Province.

Notes. Ocypus (s. str.) aglaosemanticus sp. nov. is most similar with Ocypus (s. str.) pterosemanticus sp. nov. in general habitus, but they can be distinguished by the differently shaped aedeagus; these two species also have totally different geographical distributions.

Etymology. The species epithet is named from the combination of words " aglao- " (brilliant, shining) and " semantic " (clear, defined), which were originally derived from Greek terms.

Figures

FIGURE 1 - 2. Ocypus (s. str.) liui sp. nov.: A. male tergite 10; B and D. aedeagus, lateral view; C. aedeagus, ventral view; E. female tergite 10; F. apical portion of median lobe, ventral view, paramere removed; G. underside of apical portion of paramere; H. male sternite 9; I. second gonocoxite of female genital segment; J. male sternite 8 (Scale bars = 0.50 mm).