Nazeris maoershanus Hu & Qiao, 2019

Hu, Jia-Yao & Qiao, Yu-Jia, 2019, Five new species of Nazeris Fauvel in Guangxi, China (Coleoptera, Staphylinidae, Paederinae), Zootaxa 4543 (3), pp. 431-441 : 432-433

Nazeris maoershanus Hu & Qiao , sp. n.

(Figs 2, 12–16)

Type material. Holotype: CHINA: male, ‘ China: Guangxi, Xing'an County, Mao'ershan , 25°52'27''N, 110°24'44''E, beech forest, mixed leaf litter, humus, sifted, 1940 m, 29.VII.2014, Peng, Song, Yu & Yan leg.’ (SNUC). Paratypes: 1 male, 4 females same data as holotype .

Description. Body length 4.4–4.8 mm; forebody length 2.4–2.6 mm.

Body (Fig. 2) reddish brown to dark reddish brown; antennae and legs yellowish brown.

Head ( Fig. 12 ) approximately as long as wide; punctation very dense, moderately coarse, distinctly umbilicate and partly confluent, interstices lacking microsculpture; postocular portion approximately twice as long as eye length.

Pronotum ( Fig. 12 ) 1.13–1.16 times as long as wide, approximately as long and 0.86–0.89 times as broad as head; punctation non-umbilicate, moderately dense and as coarse as that of head; midline posteriorly with short and very narrow impunctate elevation; interstices lacking microsculpture.

Elytra ( Fig. 12 ) 0.69–0.70 times as long as wide, 0.58–0.59 times as long and 0.95–0.98 times as broad as pronotum; punctation similar to 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. 13 ) with posterior margin shallowly concave in the middle. Sternite VIII ( Fig. 14 ) with triangular posterior excision. Aedeagus ( Figs 15, 16 ) with ventral process broad in basal half and moderately narrowed in apical half, with small semi-circular excision at apex in ventral view, with pair of wing-like basal laminae ventrally; dorso-lateral apophyses moderately slender, distinctly curved in ventral view, curved dorsally and slightly widened at apex in lateral view, extending beyond apex of ventral process.

Distribution and habitat. The species is known only from Mao'ershan in northeast Guangxi. The specimen was collected by sifting leaf litter at an altitude of 1940 m.

Comparative notes. The new species is very similar to N. latilobatus ( Figs 7–10 ) in general appearance and aedeagal characters, but can be separated by the aedeagal characters: distinctly narrower apex of ventral process of aedeagus in ventral view ( Fig. 15 ); longer and curved dorso-lateral apophyses in ventral view ( Fig. 15 ).

Etymology. The specific epithet is derived from the name of the type locality: Mao'ershan.

FIGURES 1–6. Habitus 1. Nazeris latilobatus ; 2. N. maoershanus ; 3. N. rugosus ; 4. N. yuyimingi ; 5. N. biacuminatus ; 6. N. yanzhuqii . Scale bars: 1 mm.

Figures

FIGURES 12–16. Nazeris maoershanus 12. forebody; 13. male sternite VII; 14. male sternite VIII; 15. aedeagus, in ventral view; 16. aedeagus, in lateral view. Scale bars: 12: 1 mm, 13–16: 0.5 mm

FIGURES 7–11. Nazeris latilobatus 7. forebody; 8. male sternite VII; 9. male sternite VIII; 10. aedeagus, in ventral view; 11. aedeagus, in lateral view. Scale bars: 7: 1 mm, 8–11: 0.5 mm