Four new species of Nazeris Fauvel from Wumengshan Nature Reserve, Yunnan, China (Coleoptera, Staphylinidae, Paederinae) Author Yang, Yi 0000-0003-1132-9103 Laboratory of Systematic Entomology, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai, 200234, China. 931009245@qq.com Author Hu, Jia-Yao 0000-0002-9861-9551 Laboratory of Systematic Entomology, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai, 200234, China. hujiayao@shnu.edu.cn text Zootaxa 2025 2025-01-28 5575 4 577 587 https://doi.org/10.11646/zootaxa.5575.4.8 journal article 10.11646/zootaxa.5575.4.8 1175-5326 14762844 170DB620-EF80-4D0B-968E-23790471262E Nazeris zhaotongus Yang & Hu sp. nov. Figs 1B , 3A–G Type material. Holotype : CHINA : male: “ China : Yunnan , Zhaotong , Sanjiangkou N. R . , Wumeng Mt. , Laziping , 28°12’25.7’’N , 103°54’49.4’’E , 1952m , 15.vii.2023 , Wei Guohao leg. [ 云南省Dzdz市三江口保护区乌ae山OiŦ 坪 ]” ( SNUC ). FIGURE 3. Nazeris zhaotongus sp. nov. A Forebody; B male sternite VII; C male sternite VIII; D, E aedeagus in ventral view; F, G aedeagus in lateral view. Scale bars: A 1.0 mm; B–G 0.5 mm. Diagnosis. Body reddish brown; head with umbilicate punctation; abdomen with fine microsculpture on all tergite; aedeagal ventral process widened near middle in ventral view, with small triangular excision at apex; dorso-lateral apophyses wide, with round apex in ventral view, not reaching apex of ventral process. Description. Body length 5.8 mm ; forebody length 2.9 mm . Body ( Fig. 1B ) reddish brown; antennae and legs yellowish brown. Head ( Fig. 3A ) 1.08 times as long as wide; punctation moderately dense and coarse, distinctly umbilicate, but not confluent, interstices lacking microsculpture; postocular portion approximately 1.9 times as long as eye length. Pronotum ( Fig. 3A ) 1.17 times as long as wide, as long as and 0.92 times as broad as head; punctation non-umbilicate, moderately dense, less coarse than that of head; midline with long and narrow impunctate elevation; interstices lacking microsculpture. Elytra ( Fig. 3A ) 0.72 times as long as wide, 0.57 times as long and 0.92 times as broad as pronotum; punctation more dense and less coarse than that of pronotum; interstices lacking microsculpture. Abdomen with punctation dense and rather coarse on tergites III–IV, dense and less coarse on tergite V, moderately dense and fine on tergites VI–VIII; with fine microsculpture on all tergites. Male. Sternite VII ( Fig. 3B ) with posterior margin slightly protruding in middle. Sternite VIII ( Fig. 3C ) with triangular posterior excision. Aedeagus ( Figs 3D–G ) moderately sclerotized; ventral process widened near middle in ventral view, with small triangular excision at apex; dorso-lateral apophyses wide, with round apex in ventral view, not reaching apex of ventral process. Distribution and habitat data. The species is known only from Wumengshan N. R. in northeast Yunnan . The specimen was collected by sifting leaf litter at an altitude of 1952 m . Comparative notes. The new species is distinguished from all the known species of Nazeris from Yunnan and adjacent area by the abdomen with fine microsculpture on all tergites; by the sternite VII with posterior margin slightly protrude in the middle ( Fig. 3B ); and by the wide dorso-lateral apophyses in ventral view ( Figs 3D, E ). Etymology. The specific epithet is derived from the name of the type locality: Zhaotong City.