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 jifuensis sp. n. Figs 1C , 2C , 5A–F , 10I Type material. Holotype : CHINA : male, ‘ China : Xizang , Gyirong County , Gyirong Valley , slope nr. Jifu Vill. 28°22′37″N , 85°19′41″E , 2400–2700 m , 21.vi.2021 , Z. Peng , Z. Yin & W. Zhang leg. ( ƱAEƋṞflâfiaeâffin' ṈĀƜȇ )’ ( SNUC ) . Paratypes : 1 female , same data as holotypes ; 3 females , same data, except ‘pass nr. Jifu Vill. 28°21′35″N , 85°20′46″E , 2600–2700 m , 19.vi.2021 ’. Diagnosis. Body dark brown; head with umbilicate punctation; abdominal tergites lacking microsculpture; aedeagal ventral process with triangular concave at apex in ventral view; dorso-lateral apophyses with wide apex in ventral view, not reaching apex of ventral process. Description. Body length 6.3–6.7 mm ; forebody length 3.3–3.4 mm . Body ( Fig. 1C ) dark brown; antennae and legs yellowish brown. Head ( Fig. 2C ) 1.02–1.08 times as long as wide, punctation very dense, moderately coarse, not distinctly umbilicate and partly confluent, interstices lacking microsculpture; postocular portion 1.9–2.1 times as long as eye length. Pronotum ( Fig. 2C ) 1.14–1.20 times as long as wide, 0.94–0.97 times as long and 0.84–0.87 times as broad as head; punctation non-umbilicate, very dense and moderately coarse; midline lacking impunctate elevation; interstices lacking microsculpture. Elytra ( Fig. 2C ) 0.65–0.73 times as long as wide, 0.53–0.66 times as long and 0.99–1.04 times as broad as pronotum; punctation as dense as, and less coarse than that of pronotum; interstices lacking microsculpture. Abdomen ( Fig. 1C ) with punctation dense and coarse on tergite III–VI, dense and less coarse on tergite VII– VIII; interstices lacking microsculpture. Male. Sternite VII ( Fig. 5A ) with posterior margin shallowly emarginated in the middle. Sternite VIII ( Fig. 5B ) with triangular posterior excision. Aedeagus ( Figs 5C–F ) moderately sclerotized; ventral process wide, with triangular concave at apex in ventral view; dorsal-lateral apophyses slender, distinctly widened and curved near apex in ventral view, not reaching apex of ventral process. FIGURE 5. Nazeris jifuensis sp. n. A male sternite VII; B male sternite VIII; C, D aedeagus in ventral view; E, F aedeagus in lateral view. Scale bars: 0.5 mm. Distribution and habitat. The species is known only from Gyirong County in southern Xizang ( Fig. 10I ). The specimen was collected by sifting leaf litter at altitudes of 2400–2700 m . Comparative notes. The new species is similar in general appearance and aedeagus to N. elegans Coiffait, 1975 , but can be separated by smaller body size (body length 6.8–7.3 mm in N. elegans ); the wider apex and deeper apical concave of ventral process of aedeagus in ventral view ( Figs 5C, D ). Etymology. The specific epithet is derived from the name of the type locality: Jifu.