Stenus erlangshanus
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BibTeX: @article{Tang2008Zootaxa1741, RIS/ Endnote: TY - JOUR Wikipedia/ Citizendium: <ref name="Tang2008Zootaxa1741">{{Citation |
Ordo: Coleoptera
Familia: Staphylinidae
Genus: Stenus
Name
Stenus erlangshanus Tang – Wikispecies link – Pensoft Profile
- Stenus erlangshanus Tang, Liang, 2008, Zootaxa 1741: 56-57.
Materials Examined
Type material. Holotype: CHINA: Sichuan Prov.: ɗ, Tianquan County, Labahe, alt. 2400–2600m, 31.VII. 2006, HU Jia-Yao & TANG Liang leg. (SHNU) Paratypes: CHINA: Sichuan Prov.:2 ΨΨ, same data as for the holotype (Ψ in SHNU, Ψ in cPut); Ψ, Tianquan County, Erlangshan, alt. 1600–2000m, 29.VII. 2006, HU Jia-Yao & TANG Liang leg. (SHNU)
Description
Description. BL: 3.8–4.2 mm; FL: 1.9–2.3 mm. Proportional measurements of holotype: HW: 48.5, PL: 39.5, PW: 36.0, EL: 39.0, EW: 41.5, SL: 27.0; relative length of segments from base to apex as 7.0: 5.5: 10.5: 6.5: 6.5: 4.5: 4.0: 3.5: 4.0: 4.0: 6.5; hind tarsi 0.75 times as long as hind tibiae. Brachypterous, blackish brown, moderately glossy, head and abdomen coarsely and very densely, pronotum and elytra coarsely and very rugosely punctate; pubescence short, recumbent. Antennae light brown, club somewhat infuscate. Maxillary palpi and legs light brown. Clypeus blackish, labrum dark brown, densely pubescent.
In most respects S. erlangshanus is very similar to S. zhuxiaoyui, but different in the following characters: diameter of large puncture on head about as wide as apical cross section of 2 nd antennal segment; pronotum with median longitudinal furrow and impressions very deep, punctation very rugose and confluent; elytra with suture relatively less strongly convex and punctation very rugose and confluent. Male. Seventh sternite (Fig. 14) with slight emargination at middle of posterior margin; 8 th sternite (Fig. 14) with triangular emargination at middle of posterior margin; 9 th sternite (Fig. 15) with very long apicolateral projections, posterior margin serrate. Aedeagus (Fig. 16) with median lobe gradually narrowed apicad into an obtuse membranous apex; expulsion hooks (Fig. 17) large, internal sac as in Fig. 16; parameres extending distinctly beyond apex of median lobe, almost straight, swollen at the beginning of their apical 2 / 5, which are distinctly narrowed toward apex, with about 23 subapical setae. Female. Abdomen broader than that in male; 8 th sternite with posterior margin slightly pointed at middle; sclerotized spermatheca as in Fig. 18.
Discussion
Remarks. See remarks for S. zhuxiaoyui.
Distribution
Distribution.China (Sichuan Province).
Etymology
Etymology. The specific name is derived from “Er’langshan”, the type locality of this species.
Taxon Treatment
- Tang, Liang; Yun-Long, Zhao; 2008: Three new Stenus species of the indubius group (Coleoptera, Staphylinidae) from China, Zootaxa 1741: 56-57. doi
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