The Nazeris fauna in Xizang, China (Coleoptera, Staphylinidae, Paederinae) Author Gao, Zhuo-Qun 0009-0003-0596-3607 Laboratory of Systematic Entomology, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai, 200234, China & 303347106 @ qq. com; https: // orcid. org / 0009 - 0003 - 0596 - 3607 303347106@qq.com Author Da, Wa 0000-0002-4856-5233 Tibetan Plateau Institute of Biology, Lhasa 850001, China & tsea 1 @ 163. com; https: // orcid. org / 0000 - 0002 - 4856 - 5233 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; https: // orcid. org / 0000 - 0002 - 9861 - 9551 hujiayao@shnu.edu.cn text Zootaxa 2023 2023-11-08 5369 1 131 145 https://www.mapress.com/zt/article/download/zootaxa.5369.1.7/52233 journal article 10.11646/zootaxa.5369.1.7 1175-5326 10144947 9DCFA15A-538D-446C-B468-44276FBB60D3 Nazeris dinggyensis sp. n. Figs 1B , 2B , 4A–G , 10H Type material. Holotype : CHINA : male, ‘ China : Xizang , Dinggyê County , pass to Zhêntang Town , 27°53′58″N , 87°27′21″E , 3060 m , 28.vi.2021 , Peng , Yin & Zhang leg. ( ƱAEṪDZƂḴaefflẅøṁ⁂ḩ )’ ( SNUC ) . Paratypes : 2 males , 1 female , same data as holotype ; 1 female , same data , except ‘ Zhêntang Town , Xiuxiongma Vill., 27°54′11″N , 87°22′42″E , 2700–3000 m , 25.vi.2021 . ( ƱAEƋṞflṪDZƂḴaeaeffǿLjn' ) ’. Diagnosis. Body reddish brown to dark brown; head with non-umbilicate punctation, shaped like sunflower seed; abdominal tergites lacking microsculpture; aedeagal ventral process distinctly narrowed near apical third in ventral view; dorso-lateral apophyses with wide apex in ventral view, not reaching apex of ventral process. FIGURE 1. Habitus A N. mirabilis sp. n. ; B N. dinggyensis sp. n. ; C N. jifuensis sp. n. ; D N. wenxuani sp. n. ; E N. gladius sp. n. ; F N. gyirongensis sp. n. ; G N. yadongensis sp. n. Scale bars: 1.0 mm. Description . Body length 6.2–6.4 mm ; forebody length 3.3–3.4 mm . Body ( Fig. 1B ) reddish brown to dark brown; antennae and legs yellowish brown. Head ( Fig. 2B ) 1.05–1.11 times as long as wide; punctation very dense, moderately coarse and non-umbilicate, shaped like sunflower seed; interstices lacking microsculpture; postocular portion 2.2–2.3 times as long as eye length. Pronotum ( Fig. 2B ) 1.15–1.24 times as long as wide, 0.90–0.95 times as long and 0.80–0.87 times as broad as head; punctation non-umbilicate, moderately dense, slightly coarser than that of head; midline posteriorly with very short and narrow impunctate elevation; interstices lacking microsculpture. FIGURE 2. Forebodies A N. mirabilis sp. n. ; B N. dinggyensis sp. n. ; C N. jifuensis sp. n. ; D N. wenxuani sp. n. ; E N. gladius sp. n. ; F N. gyirongensis sp. n. ; G N. yadongensis sp. n. Scale bars: 1.0 mm. FIGURE 3. Nazeris mirabilis sp. n. A abdominal tergite V; B male sternite VII; C male sternite VIII; D, E aedeagus in ventral view; F, G aedeagus in lateral view. Scale bars: A 0.1 mm; B–G 0.5 mm. Elytra ( Fig. 2B ) 0.65–0.72 times as long as wide, 0.56–0.65 times as long and 1.01–1.07 times as broad as pronotum; punctation similar to that of pronotum; interstices lacking microsculpture. Abdomen ( Fig. 1B ) with punctation dense and rather coarse on tergites III–IV, dense and less coarse on tergites V–VI, moderately dense and fine on tergites VII–VIII; interstices lacking microsculpture ( Fig. 4A ). Male. Sternite VII ( Fig. 4B ) with posterior margin shallowly concaved in the middle. Sternite VIII ( Fig. 4C ) with V-shaped posterior excision. Aedeagus ( Figs 4D–G ) weakly sclerotized; ventral process distinctly narrowed near apical third in ventral view; dorso-lateral apophyses slender, with wide apex in ventral view, not reaching apex of ventral process. Distribution and habitat data . The species in known only from Dinggyê County in southern Xizang ( Fig. 10H ). The specimen was collected by sifting leaf litter at attitudes of 2700–3060 m . Comparative notes. The new species is very similar to N. mirabilis in general appearance, especially the punctation of head, but can be separated by abdominal tergites lacking microsculpture ( Fig. 4A ) and distinctly slender ventral process of aedeagus in ventral view ( Figs 4D, E ). Etymology. The specific epithet is derived from the name of the type locality: Dinggyê.