Nazeris nigritulus Hu, Li & Zhao

Hu, Jiayao, Li, Lizhen & Zhao, Meijun, 2011, Twelve new species of the Genus Nazeris Fauvel from Zhejiang Province, China (Coleoptera, Staphylinidae, Paederinae), Zootaxa 2797, pp. 1-20 : 9-11

Nazeris nigritulus Hu, Li & Zhao , sp. nov.

( Figs. 6 , 38–42 )

Type material. Holotype: CHINA: Zhejiang Prov.: ɗ, Anji County, Longwangshan, 950–1200 m, 25.IV.2006, TANG Liang leg. Paratypes: CHINA: Zhejiang Prov.: 11ɗɗ, 3ΨΨ, same data as holotype; ɗ, Ψ, Lin'an City, Tianmushan, 15–28.VIII.2003, HU Jia-Yao & TANG Liang leg.; 2ɗɗ, 2ΨΨ, Lin'an City, Tianmushan, 800–1150 m, 19.V.2006, HU Jia-Yao & TANG Liang leg.; 6ɗɗ, 10ΨΨ, Lin'an City, Tianmushan, 1100 m, 24.VIII.2008, HU Jia-Yao & TANG Liang leg.; ɗ, Ψ, Anji County, Longwangshan, 1000–1200 m, 3.X.2003, HU Jia-Yao & TANG Liang leg.; 3ɗɗ, 3ΨΨ, Anji County, Longwangshan, 950–1200 m, 25.IV.2004, HU Jia-Yao leg.; 4ɗɗ, 2ΨΨ, same data but TANG Liang leg.; ɗ, Ψ, same data but ZHU Li-Long leg.; ɗ, same data but ZHU Jing-Wen leg.; ɗ, Ψ, same data but HUANG Jia-Jie leg.; ɗ, same locality but 25.IV.2006, LING Rui-Fen leg.; 2ΨΨ, same data but HE Wen-Jia leg.; Ψ, same data but WANG Yong-Yin leg.; Ψ, same data but ZHU Ling leg.

Description. Body length: 4.5–4.7 mm; forebody length: 2.4–2.7 mm.

Body ( Fig. 6 ) elongate, dark brown, with labrum, mandibles, coxae and two basal antennal segments reddish yellow; the remaining antennal segments, maxillary palpi and legs except for coxae yellow.

Head suborbicular, slightly longer than broad (length/width = 1.02); postocular portion 1.85 times as long as eye length; on disc intervals between punctures flat, not raised like carinae. Antennae slender, extending to middle of pronotum; relative length of each segment from 1 to 11: 16.0: 6.0: 10.0: 8.0: 7.5: 7.0: 7.0: 6.0: 6.0: 5.5: 8.0; relative width of each segment from 1 to 11: 5.0: 4.0: 3.0: 3.0: 3.0: 3.0: 3.0: 3.0: 3.0: 3.0: 3.5.

Pronotum convex and oval, longer than wide (length/width = 1.20), narrower (pronotum/head = 0.85) and longer (pronotum/head = 1.02) than head; prosternum with strong longitudinal median carina not reaching its anterior margin. Elytra slightly shorter than wide (length/width = 0.91), distinctly shorter (elytra/pronotum = 0.78) and slightly wider (elytra/pronotum = 1.04) than pronotum.

Abdomen without microsculpture.

Male. Seventh sternite ( Fig. 38 ) slightly prominent in middle of posterior margin; 8th sternite ( Fig. 39 ) shallowly and triangularly excised in middle of posterior margin. Aedeagus ( Figs. 40–42 ) distinctly sclerotized; median lobe in dorsal view constricted at apical 1/3, widened in apical 1/4, V-shaped notched at apex, near middle with pair of small lateral processes; dorso-lateral apophyses in dorsal view dilated in basal 1/3 and apical 1/3, gradually dilated apically in lateral view, with apices obtuse and not reaching apex of median lobe.

Female. Seventh and 8th sternites simple.

Remarks. Nazeris nigritulus can be distinguished from N. rougemonti Ito, 1996 , another species distributed in Tianmushan and Longwangshan, by the following characters: abdominal segments without any microsculpture (in N. rougemonti with faint microsculpture on the 8th and on apical third of 7th tergite); male 7th sternite slightly prominent at middle in posterior margin ( Fig. 38 ) (in N. rougemonti slightly emarginate); median lobe of aedeagus in dorsal view with a V-shaped notch at apex ( Fig. 40 ) (in N. rougemonti without notch).

Distribution. China (Zhejiang Prov.).

Etymology. The specific name is derived from the Latin word “ niger ” and refers to the blackish body colour and small size.

Figures

FIGURES 1 – 12. Habitus of Nazeris. 1 — N. parabrunneus sp. nov.; 2 — N. furcatus sp. nov.; 3 — N. yanyingae sp. nov.; 4 — N. niutoushanus sp. nov.; 5 — N. shenshanjiai sp. nov.; 6 — N. nigritulus sp. nov.; 7 — N. tianmuensis sp. nov.; 8 — N. yandangensis sp. nov.; 9 — N. jiulongshanus sp. nov.; 10 — N. zhujingwenae sp. nov.; 11 — N. baishanzuensis sp. nov.; 12 — N. lijinweni sp. nov. Scale bars 1 mm.

FIGURES 38 – 42. Details of Nazeris nigritulus sp. nov. 38 — male 7 th sternite; 39 — male 8 th sternite; 40 — aedeagus in dorsal view; 41 — aedeagus in lateral view; 42 — aedeagus in ventral view. Scale bar 0.5 mm.