Ocypus Zhou 2017
Creators: name: Zhou, Hong-Zhang
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Ocypus

description: 3. Ocypus (s. str.) pterosemanticus sp. nov.
(Figs. 3-1, 3-2)
Type material. Holotype male, CHINA: Sichuan Province: Baoxing County, Fengtongzhai, 9.VI.1997, coll. Hongzhang Zhou (IZ-CAS). Paratypes: CHINA: Sichuan Province: 1 female, same data as holotype; 1 male, Wolong, Gengda Town, 1845 m, larch forest, pitfall traps, 4-7.IX.2004, coll. Xiaodong Yu (IZ-CAS); 1 male, Lushan County, Shuangshi Town, 1165 m, mixed coniferous and broad-leaved forest, pitfall traps, 29.VI- 5.VII.2001, coll. Xiaodong Yu, Hongzhang Zhou (IZ-CAS).
Measurements. Body length: 23.2-24.5 mm. CL: 1.06; EL: 4.07; ELS: 2.38; EW: 4.70; HL: 3.26; HW: 3.97; PO: 1.57; PL: 3.95; PW: 4.06.
Description. Large-sized species. Body robust, entirely dark grey; maxillary and labial palpi brunneous, antennae black, with apical segments vaguely paler, and segments 5-10 with both ends paler, tending to be reddishbrown; legs black, with slightly paler tibiae; protibiae and protarsi covered with very dense brown pubescence; pubescence on dorsal side of head, pronotum, elytra and abdominal tergites uniformly black.
Head rounded, quadrangular, wider than long (ratio 1.22), widest at middle; posterior angles rounded. Eyes moderately large, distinctly shorter than tempora (ratio 0.68) in dorsal view, slightly protruding. Punctation and pubescence on dorsal surface of head relatively dense and fine, puncture intervals smaller than diameters of punctures; impunctate midline only present on posterior half of pronotal disc. Gular sutures subcontiguous in middle portion. Antenna moderately long, segment 3 longer than segment 2 (ratio 1.23), segments 4 to 9 distinctly longer than wide, gradually becoming shorter distad, segment 10 slightly wider than long, segment 11 about as long as segment 10. Pronotum as long as wide (ratio 0.97), slightly narrowed anteriad from anterior fourth; narrow marginal groove disappearing downwards at anterior third of pronotal length; disc with distinct and entire impunctate midline; punctation and pubescence on disc about same as that on dorsal surface of head, slightly finer. Pronotal hypomeron lacking microsetae. Scutellum finely punctate and setose on entire surface. Elytra relatively long, vaguely dilated posteriad and slightly depressed at base; elytra length along suture shorter than the length of pronotum along midline (ratio 0.62), but about as long as that along lateral sides; punctation much finer and denser than that on head disk, combined with very dense microsculpture. Wings fully developed. Abdominal tergite 2 punctate and pubescent only on posterior half; all visible abdominal tergites finely and densely punctate and pubescent; pubescence on abdominal tergites relatively long; no yellowish tomentose pubescence on visible tergites 4 and 5.
Male. Abdominal sternite 8 elongate, with medioapical emargination wide and shallow (Fig. 3-2 J). Sternite 9 with wide and very deep, obtuse apical emargination (Fig. 3-2 H). Tergite 10 elongated, with shovel-like apical portion, sparsely setose (Fig. 3-2 A). Aedeagus relatively simple; apical portion of median lobe finger-like, with a horn like protuberance on left (ventral view) (Fig. 3-2 F); paramere simple, reaching apex of median lobe, with apical portion asymmetrically rounded; sensory peg setae on underside of paramere closely arranged on apical portion, not numerous (Figs. 3-1 D, 3-2 G).
Female. Second gonocoxite shaped as in Figs. 3-1 E, 3- 2 I. Tergite 10 slightly elongated, almost evenly narrowed toward subacute apex, shaped as in Fig. 3-2 E.
Distribution. Ocypus (s. str.) pterosemanticus sp. nov. is at present known from three localities in central Sichuan Province. Since the hind wings of this species are fully developed, it may be more widely distributed than presently known.
Notes. Ocypus (s. str.) pterosemanticus sp. nov. can be distinguished from the other species by the uniquely shaped aedeagus, particularly by the special shaped median lobe and relatively long paramere.
Etymology. The species epithet is named from the combination of terms " ptero-" (wing, feather) and " semantic " (clear, defined), which were originally derived from Greek words.
description: Published as part of Zhou, Hong-Zhang, 2017, Taxonomy of the subgenus Ocypus Leach (Coleoptera: Staphylinidae: Staphylinini) and three new species from China, pp. 293-310 in Zootaxa 4312 (2) on pages 301-302, DOI: 10.11646/zootaxa.4312.2.5, http://zenodo.org/record/852866