Three new species of Nazeris Fauvel from the Jiuwan Mountain, Guangxi, China (Coleoptera, Staphylinidae, Paederinae) Author Li, Xin-Meng 0009-0006-9782-4613 Laboratory of Systematic Entomology, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai, 200234, China & 850025409 @ qq. com; https: // orcid. org / 0009 - 0006 - 9782 - 4613 850025409@qq.com Author Wu, Wei-Ping 0009-0002-1355-4451 Management Center of Guangxi Jiuwanshan National Nature Reserve, 141 Minzu Road, Rongshui, Liuzhou, Guangxi, 545399, China & jwsglj 3000 @ 163. com; https: // orcid. org / 0009 - 0002 - 1355 - 4451 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 2023-10-25 5360 1 82 90 https://www.mapress.com/zt/article/download/zootaxa.5360.1.4/52106 journal article 10.11646/zootaxa.5360.1.4 1175-5326 10151046 631C0500-8954-49E8-BD78-291755973603 Nazeris jiuwanensis sp. n. Figs 1A , 2A , 3A–F Type material. Holotype : CHINA : male: " China : Guangxi , Huanjiang , Jiuwan Mt. , Yangmeiao , 25°12'22.15''N , 108°40'32.01''E , 1250 m , 25.iv.2021 , Tang, Peng, Cai & Song leg. [ ḞƱflữƌfffiƜêDzḏ ]" ( SNUC ) . Paratypes : 3 males , same data as holotype ; 8 males , 3 females , same data, except " 23.iv.2021 " ; 2 males , 1 female , same data, except " 8.v.2021 " ; 1 male , 1 female , same data, except " Liuzhou City , Jiuwan Shan N. R . , Yangmei'ao , 25°11'42''N , 108°38'51''E , mixed leaf litter, sifted, 1200 m , 24–26.vii.2015 , Li & Zhao leg." . Diagnosis. Body reddish brown; head with umbilicate punctation; abdominal tergites lacking microsculpture; aedeagal ventral process short and stout in ventral view; dorso-lateral apophyses strongly curved backward near apex in ventral view, extending much beyond apex of ventral process. Description. Body length 4.5–5.1 mm ; forebody length 2.4–2.6 mm . Body ( Fig. 1A ) reddish brown; antennae and legs yellowish brown. Head ( Fig. 2A ) 1.03–1.07 times as long as wide; punctation moderately dense and coarse, distinctly umbilicate and partly confluent, interstices lacking microsculpture; postocular portion approximately 1.8–2.0 times as long as eye length. Pronotum ( Fig. 2A ) 1.12–1.18 times as long as wide, 0.95–1.02 times as long and 0.91–1.03 times as broad as head; punctation non-umbilicate, moderately dense, less coarse than that of head; midline posteriorly with short and narrow impunctate elevation; interstices lacking microsculpture. Elytra ( Fig. 2A ) 0.54–0.65 times as long as wide, 0.43–0.52 times as long and 0.86–0.96 times as broad as pronotum; punctation as dense and coarse as 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. 3A ) with posterior margin shallowly emarginated in the middle. Sternite VIII ( Fig. 3B ) with triangular posterior excision. Aedeagus ( Figs 3C–F ) moderately sclerotized; ventral process short and stout, with narrowly round apex in ventral view, and with pair of triangular basal laminae ventrally; dorso-lateral apophyses long, strongly curved backward near apex, resembling a hook in lateral view, extending much beyond apex of ventral process. Distribution and habitat data. The species is known only from Jiuwan Mt. in northern Guangxi . The specimens were collected by sifting leaf litter at altitudes of 1,200 –1,250 m . Comparative notes. The new species is very similar to N. obtortus Assing, 2016 in general appearance and separated only by the aedeagal characters: ventral process wider in ventral view and with triangular basal laminae ( Figs 3C, D ); dorso-lateral apophyses strongly curved backward near apex ( Figs 3E, F ). Etymology. The specific epithet is derived from the name of the type locality: Jiuwan Mt.