Ocypus (Pseudocypus) pileaticulminis, He & Zhou, 2017
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publication ID |
https://doi.org/ 10.11646/zootaxa.4339.1.1 |
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publication LSID |
lsid:zoobank.org:pub:F5885D17-F256-4F6B-9D5D-1555637C116C |
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DOI |
https://doi.org/10.5281/zenodo.6014873 |
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persistent identifier |
https://treatment.plazi.org/id/03F987B6-8831-FFA0-1CCA-FBACDE50FE69 |
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treatment provided by |
Plazi |
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scientific name |
Ocypus (Pseudocypus) pileaticulminis |
| status |
sp. nov. |
1. Ocypus (Pseudocypus) pileaticulminis View in CoL sp. nov.
( Figs. 1-1, 1-2 View FIGURE 1 - 1 View FIGURE 1 - 2 )
Type locality: CHINA, Sichuan Province, South of Danba County, Wujiapengcun.
Type material. Holotype male, CHINA: Sichuan Province, South of Danba County, Wujiapengcun , 2630 m, 19–21. VII. 2001, coll. Xiaodong Yu and Hongzhang Zhou (IZ-CAS) . Paratypes: CHINA: Sichuan Province: 1 male, 1 female, same data as holotype (IZ-CAS).
Measurements. Body length: 22.4–25.3 mm. CL: 0.70; EL: 3.48; ELS: 1.73; EW: 3.98; HL: 3.48; HW: 4.42; PO: 1.87; PL: 4.49; PW: 4.00.
Description. Large-sized species. Body robust, entirely black except elytra paler; maxillary and labial palpi brunneous, antennae dark brunneous, with apical segments vaguely paler; legs dark brownish piceous, with tibiae and protarsus covered with brunneous pubescence; pubescence of dorsal side of head and pronotum dark rufous, and that of elytra and abdominal tergites tends to be paler.
Head of rounded quadrangular shape, relatively large and wide, with rounded posterior angles, wider than long (ratio 1.16), slightly narrowed toward basal parts. Eyes small and slightly protruding, considerably shorter than tempora (ratio 0.20) in dorsal view. Punctation and pubescence on dorsal surface of head moderately dense, puncture intervals larger than diameters of punctures; no impunctate midline present. Gular sutures subcontiguous in middle section. Antenna relatively short, segment 3 longer than segment 2 (ratio 1.42), segments 4 to 7 longer than wide, becoming shorter gradually, segments 8–10 about as long as wide, segment 11 longer and slightly wider than segment 10. Pronotum vaguely longer than wide (ratio 1.07), with posterior half slightly wider; narrow marginal groove disappearing downwards at anterior third of pronotal length; impunctate midline distinctly present; punctation and pubescence on disc about same as that on dorsal surface of head. Pronotal hypomeron asetose. Scutellum finely punctate and setose on entire surface. Elytra short, distinctly depressed at base, vaguely dilated posteriad; elytral length shorter than pronotum along midline, with a ratio of 0.61 along suture and a ratio of 0.86 along sides; punctation finer and denser than that on disk of head, combined with very dense microsculpture. Wings markedly reduced to small stumps. Abdominal tergite 2 densely and finely punctate and pubescent; all visible abdominal tergites finely and densely punctate, punctation becoming slightly sparser and coarser toward apex of abdomen; no yellowish tomentose pubescence present on visible tergites 4 and 5.
Male. Sternite 8 with sharply triangular medioapical emargination wide and deep ( Fig. 1-2 J View FIGURE 1 - 1 View FIGURE 1 - 2 ). Sternite 9 with apical emargination moderately deep, tapered basal portion moderately long ( Fig. 1-2 H View FIGURE 1 - 1 View FIGURE 1 - 2 ). Tergite 10 evenly narrowed toward apex, with apical portion broadly truncate, sparsely setose ( Fig. 1-2 A View FIGURE 1 - 1 View FIGURE 1 - 2 ). Aedeagus long, with apex of median lobe twisted and hat-like ( Figs. 1-1 C, 1-2 C, F View FIGURE 1 - 1 View FIGURE 1 - 2 ); leaf-shaped paramere markedly asymmetrical almost reaching apex of median lobe ( Figs. 1-1 B, C, 1-2 View FIGURE 1 - 1 View FIGURE 1 - 2 B-D); sensory peg setae on underside of paramere arranged along apical edge of paramere, not numerous ( Figs. 1-1 D, 1-2 G View FIGURE 1 - 1 View FIGURE 1 - 2 ).
Female. Second gonocoxite moderately long, bearing a single large seta near apical portion, shaped as in Figs. 1-1 E, 1- 2 I View FIGURE 1 - 1 View FIGURE 1 - 2 . Apical portion of tergite 10 markedly widened into duckbill shape, strongly sclerotized ( Fig. 1-2 E View FIGURE 1 - 1 View FIGURE 1 - 2 ).
Distribution. Ocypus pileaticulminis sp. nov. is at present known only from Danba County in western Sichuan Province.
Notes. Ocypus pileaticulminis sp. nov. can be distinguished from congeners by the shape of the aedeagus of the male and by the shape of abdominal tergite 10 of the female.
Etymology. The specific epithet, pileaticulminis , is from the Latin words " pileatus "(with hat or hat like) and " culmen " (culminis, tip, top), to indicate the special form of median lobe apex.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.