Ocypus (Pseudocypus) recticulminis He & Zhou 2017, sp. nov.
Creators: name: He, Liang
name: Zhou, Hong-Zhang
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Ocypus
Ocypus recticulminis

description: 8. Ocypus (Pseudocypus) recticulminis sp. nov.
(Figs. 8-1, 8-2)
Type locality: CHINA, Sichuan Province, Baoxing County, Guobayangou.
Type material. Holotype male, CHINA: Sichuan Province: Baoxing County, Guobayangou, 2318 m, forestgrassland ecotone, pitfall traps, 4–7.VIII.2003, coll. Xiaodong Yu (IZ-CAS). Paratypes: CHINA: Sichuan Province: 5 males, 5 females, same data as holotype (IZ-CAS); 5 males, 7 females, Baoxing County, Guobayangou, 2295 m, Cyclobalanopsis glauca forest, pitfall traps, 4–7.VIII.2003, coll. Xiaodong Yu (IZ-CAS); 3 males, 3 females, Baoxing County, Guobayangou, 2305 m, mixed broad-leaved forest, pitfall traps, 4–7.VIII.2003, coll. Xiaodong Yu (IZ-CAS); 4 males, 3 females, Baoxing County, Guobayangou, 2306 m, broad-leaved forest and bamboo forest, pitfall traps, 4–7.VIII.2003, coll. Xiaodong Yu (IZ-CAS); 2 males, 2 females, Baoxing County, Guobayangou, 2503 m, fir forest, pitfall traps, 4–7.VIII.2003, coll. Xiaodong Yu (IZ-CAS); 16 males, 19 females, Baoxing County, Guobayangou, 2507 m, broad-leaved forest, pitfall traps, 4–7.VIII.2003, coll. Xiaodong Yu (IZ- CAS).
Measurements. Body length: 18.2–22.1 mm. CL: 0.62; EL: 2.62; ELS: 1.13; EW: 3.50; HL: 2.53; HW: 2.89; PO: 1.33; PL: 3.21; PW: 2.73.
Description. Medium sized species. Body relatively slender, black; antennae, maxillary and labial palpi dark reddish-brown; legs dark brunneous; protibia and protarsus covered with dense brownish pubescence; pubescence of dorsal side of head and pronotum black, and that of elytra and abdominal tergites are similar.
Head of rounded quadrangular shape, with dilated lateral sides and rounded posterior angles, wider than long (ratio 1.14). Eyes small and slightly protruding, considerably shorter than tempora (ratio 0.55) in dorsal view. Punctation and pubescence on dorsal surface of head dense and fine, punctures shallow, with blurred boundaries, puncture intervals about the same as or slightly larger than diameters of punctures; punctation gradually becoming sparser toward clypeus; impunctate midline vaguely present on posterior half of head. Gular sutures distinctly separated, with gular dilated both anteriad and posteriad. Antenna moderately long, segment 3 longer than segment 2 (ratio 1.28), segments 4 to 8 distinctly longer than wide, segment 9 and 10 vaguely longer than wide, segment 11 about as long as segment 10. Pronotum longer than wide (ratio 1.18), with slightly curved lateral sides and rounded posterior angles; narrow marginal groove disappearing downwards at anterior third of pronotal length; disc with entire and distinct impunctate midline; punctation and pubescence on disc sparser than that on dorsal surface of head, punctures relatively smaller, puncture intervals distinctly larger than diameters of punctures. Pronotal hypomeron lacking microsetae. Scutellum finely punctate and setose on entire surface. Elytra short, distinctly depressed at base and dilated posteriad, anterior sides about as wide as pronotum, at suture considerably (ratio 0.35), at sides distinctly (ratio 0.82) shorter than pronotum at midline; elytral punctation much finer and denser than that on head disc, combined with very fine and dense microsculpture. Wings markedly reduced. Abdominal tergite 2 finely punctate and pubescent on entire surface; all visible abdominal tergites densely and finely punctate and pubescent; no yellowish tomentose pubescence present on visible tergites 4 and 5.
Male. Sternite 8 with shallow and obtusely triangular medioapical emargination (Fig. 8-2 J). Sternite 9 with wide and shallow apical emargination, tapered basal portion located centrally, relatively short (Fig. 8-2 H). Tergite 10 elongate, almost evenly narrowed toward apex, sparsely setose (Fig. 8-2 A). Aedeagus simple, lateral view elongate and not strongly bended in middle portion (Fig. 8-1 B, C, 8-2 B–D).
Female. Second gonocoxite elongate, bearing a single large seta near apical portion (Figs. 8-1 E, 8- 2 I). Tergite 10 of female relatively narrow, with apical portion narrow and subacute, sparsely setose (Fig. 8-2 E).
Distribution. Ocypus recticulminis sp. nov. is at present known only from type locality in central Sichuan Province.
Notes. The specimens of Ocypus recticulminis sp. nov. and Ocypus nigriculminis sp. nov. were collected in Baoxing County, at similar altitudes and in similar habitats. Both of them are medium sized species, but they can be distinguished from each other by the shape of the aedeagus, the medioapical emargination of male sternite 8 and the different width ratios of pronotum and elytra.
Etymology. The specific epithet, recticulminis, is from the Latin words " rectus " (straight, to indicate the straight median lobe of aedeagus) and " culmen " (culminis, tip, top).
description: Published as part of He, Liang & Zhou, Hong-Zhang, 2017, Taxonomy of the subgenus Pseudocypus Mulsant & Rey (Coleoptera: Staphylinidae: Staphylinini) and eight new species from China, pp. 1-77 in Zootaxa 4339 (1) on pages 31-32, DOI: 10.11646/zootaxa.4339.1.1, http://zenodo.org/record/1037681