Nazeris hunanensis Hu, Xiu

Hu, Jia-Yao, Xiu, Mei-Ling & Song, Xiao-Bin, 2025, A new species of Nazeris Fauvel from Zhangjiajie, Hunan, China (Coleoptera, Staphylinidae, Paederinae), Zootaxa 5717 (4), pp. 585-588 : 586

Nazeris hunanensis Hu, Xiu & Song, sp. nov.

Figs 1–8

Type material. Holotype: CHINA: male: “ China: Hunan, Zhangjiajie City ( 张ĸạm), Wulingyuan ( KäDz ), Zhangjiajie National Forest Park , Huangshizhai ( waș), alt. 1000 m, 5.X.2014, 29°19'53"N, 110°25'30"E, Xiao-Bin Song leg.” ( SNUC) . Paratypes: 1 male, 1 female, same data as holotype .

Diagnosis. Body dark brown; head with non-umbilicate punctation; abdominal tergites lacking microsculpture; aedeagal ventral process constricted near basal third, with triangularly excised apex in ventral view; dorso-lateral apophyses with inner sides triangularly prominent near base in ventral view, extending much beyond apex of ventral process.

Description. Body length 5.0– 5.3 mm; forebody length 2.7–2.9 mm.

Body ( Fig. 1 ) dark brown; antennae and mouth part reddish brown, legs yellowish brown.

Head ( Fig. 2 ) 1.08–1.09 times as long as wide; punctation dense and coarse, non-umbilicate, interstices lacking microsculpture; postocular portion approximately twice as long as eye length.

Pronotum ( Fig. 2 ) 1.21–1.27 times as long as wide, 0.93–0.94 times as long and 0.80–0.84 times as broad as head; punctation non-umbilicate, moderately dense, similar to that of head; midline lacking impunctate elevation; interstices lacking microsculpture.

Elytra ( Fig. 2 ) 0.67–0.69 times as long as wide, 0.56–0.58 times as long and 1.00–1.06 times as broad as pronotum; punctation as dense as and less coarse than that of pronotum; interstices lacking microsculpture.

Abdomen with punctation dense and rather coarse on tergites III–V, dense and less coarse on tergite VI, moderately dense and fine on tergites VII–VIII; interstices lacking microsculpture.

Male. Sternite VII ( Fig. 3 ) with posterior margin distinctly prominent at middle. Sternite VIII ( Fig. 4 ) with triangular posterior excision. Aedeagus ( Figs 5–8 ) well sclerotized; ventral process short, constricted near basal third, with triangularly excised apex in ventral view, with round apex in lateral view; dorso-lateral apophyses strong and long, with inner sides triangularly prominent near base in ventral view, extending much beyond apex of ventral process.

Distribution and habitat data. The species is known only from Zhangjiajie in northwest Hunan. The specimens were collected by sifting leaf litter at an altitude of 1000 m.

Comparative notes. The new species is very similar to N. zekani Hu & Li, 2015 in general appearance and separated only by the aedeagal characters: ventral process shorter, without basal laminae ventrally ( Figs 5, 6 ) (in N. zekani , ventral process with pair of wing-like basal laminae ventrally); dorso-lateral apophyses extending much beyond apex of ventral process ( Figs 5, 6 ) (in N. zekani , dorso-lateral apophyses not reaching apex of ventral process).

Etymology. The specific epithet is derived from the name of the type locality: Hunan Province.

Figures

FIGURES 1–8. Nazeris hunanensis sp. nov. 1 habitus; 2 forebody; 3 male sternite VII; 4 male sternite VIII; 5, 6 aedeagus in ventral view; 7, 8 aedeagus in lateral view. Scale bars: 1–2 1.0 mm; 3–8 0.5 mm.