Nazeris yujiei Lin, Yu & Hu, 2022

Lin, Xiao-Bin, Yu, De-Hui & Hu, Jia-Yao, 2022, The Nazeris fauna of the Leigong Mountain, Guizhou, China (Coleoptera, Staphylinidae, Paederinae), Zootaxa 5138 (1), pp. 41-53 : 47-48

Nazeris yujiei Lin, Yu & Hu , sp. n.

Figs 4 , 23–27

Type material. Holotype: CHINA: male: " China: Guizhou, Rongjiang County, Xiaodanjiang , 26°20'16.09''N, 108°20'23.34''E, 700 m, 5.v.2021, Tang, Peng, Cai & Song leg." ( SNUC) . Paratypes: 3 males, 2 females, same data as holotype. ( SNUC) .

Description. Body length 6.0– 6.7 mm; forebody length 2.9–3.6 mm.

Body ( Fig. 4 ) dark brown; legs yellowish brown; antennae dark brown to light brown.

Head ( Fig. 23 ) 1.07–1.11 times as long as wide; punctation very dense, moderately coarse, distinctly umbilicate, interstices lacking microsculpture; postocular portion approximately 1.7–1.8 times as long as eye length.

Pronotum ( Fig. 23 ) 1.16–1.20 times as long as wide, 0.97–1.00 times as long and 0.89–0.92 times as broad as head; punctation non-umbilicate, moderately dense and as coarse as that of head; midline posteriorly with short and narrow impunctate elevation; interstices lacking microsculpture.

Elytra ( Fig. 23 ) 0.62–0.67 times as long as wide, 0.50–0.57 times as long and 0.97–1.00 times as broad as pronotum; punctation as dense as, and slightly coarser 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. 24 ) with posterior margin weakly prominent at middle. Sternite VIII ( Fig. 25 ) with triangular posterior excision. Aedeagus ( Figs 26, 27 ) well sclerotized; ventral process short, narrowed apicad, with acute apex in ventral view; dorso-lateral apophyses moderately strong, with wide and round apex in ventral view, slightly curved in lateral view, extending beyond apex of ventral process.

Distribution and habitat data. The species is known from Xiaodanjiang, very close to Leigong Mt. in eastern Guizhou. The specimens were collected by sifting leaf litter at an altitude of 700 m.

Comparative notes. The new species is very similar to N. leigongensis in general appearance and separated only by the aedeagal characters: the acute apex of ventral process in ventral view, and the narrower dorso-lateral apophyses in lateral view ( Fig. 26 ).

Etymology. The species is named in honor of Yu-Jie Cai, who collected the type specimens.

Figures

FIGURES 1–7. Habitus 1 N. ingentis; 2 N. resimus; 3 N. leigongensis; 4 N. yujiei; 5 N. muricatus; 6 N. excertus; 7 N. serratus. Scale bars: 1.0 mm.

FIGURES 23–27. Nazeris yujiei 23 forebody; 24 male sternite VII; 25 male sternite VIII; 26 aedeagus in ventral view; 27 aedeagus in lateral view. Scale bars: 23 1.0 mm; 24–27 0.5 mm.