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 Key to species of Nazeris in Guangxi , China 1 Head with non-umbilicate punctation ( Ma et al ., 2021: 585 , Fig. 14)............................................. 2 - Head with umbilicate punctation ( Fig. 2A )................................................................. 4 2 Body length about 7.8 mm ; dorso-lateral apophyses of aedeagus with wide and round apex ( Ma et al ., 2021: 585 , Figs 17, 18)..................................................................... Nazeris curvilaminatus Ma et al ., 2021 - Body length less than 6.2 mm ; dorso-lateral apophyses of aedeagus with narrow apex ( Hu & Li 2017: 337 , Fig. 18)....... 3 3 Pronotum with narrow impunctate elevation in posteriorly half ( Hu & Li 2017: 337 , Fig. 15); dorso-lateral apophyses of aedeagus not widened near middle in ventral view ( Hu & Li 2017: 337 , Fig. 18)................. N. alatus Hu & Li, 2017 - Pronotum with unconspicuous or lacking impunctate elevation in posteriorly half ( Hu & Qiao 2019: 440 , Fig. 35); dorso-lateral apophyses of aedeagus widened near middle in ventral view ( Hu & Qiao 2019: 440 , Fig. 38)...................................................................................................... N. yanzhuqii Hu & Qiao, 2019 4 Body reddish brown ( Fig. 1A )........................................................................... 5 - Body dark brown ( Fig. 1C )............................................................................ 18 5 Head and pronotum with fine microsculpture ( Hu & Qiao 2019: 436 , Figs 18, 19)............ N. rugosus Hu & Qiao, 2019 - Head and pronotum lacking microsculpture................................................................. 6 6 Abdomen with fine microsculpture on all tergites........................................... N. qini Hu & Li, 2012 - Abdomen lacking microsculpture......................................................................... 7 7 Dorso-lateral apophyses of aedeagus extending to the same level as the apex of ventral process....................... 8 - Dorso-lateral apophyses of aedeagus extending much shorter than ventral process or distinctly beyond apex of ventral process ................................................................................................... 9 8 Ventral process of aedeagus narrow, constricted to sharp apex in ventral view ( Hu et al . 2012: 36 , Fig. 4 ).............................................................................................. N. dayaoensis Hu & Li, 2012 - Ventral process of aedeagus conspicuously broad, with round apex in ventral view ( Assing 2016: 307 , Fig. 11).......................................................................................... N. latilobatus Assing, 2016 9 Dorso-lateral apophyses of aedeagus extending much shorter than ventral process ( Figs 4E, F )......... N. qingshuius sp. n. - Dorso-lateral apophyses of aedeagus extending distinctly beyond apex of ventral process........................... 10 10 Apical half of ventral process of aedeagus nearly triangular, with narrow apex in ventral view ( Figs 3C, D )............. 11 - Apical half of ventral process of aedeagus broad, with wide apex in ventral view ( Hu & Li 2017: 334 , Fig. 4 )........... 13 11 Male sternite VII with posterior margin nearly truncate at middle (Su et al . 2020: 246, Fig. 7B); dorso-lateral apophyses of aedeagus straight in lateral view (Su et al . 2020: 246, Fig. 7E)............................ N. fulongensis Su et al ., 2020 - Male sternite VII with posterior margin shallowly emarginated at middle ( Hu & Li 2017: 334 , Fig. 2 ); dorso-lateral apophyses of aedeagus bent dorsad in lateral view ( Hu & Li 2017: 334 , Fig. 5 )............................................ 12 12 Dorso-lateral apophyses of aedeagus strongly curved backward near apex, resembling a hook ( Figs 3E, F )................................................................................................... N. jiuwanensis , sp. n. - Dorso-lateral apophyses of aedeagus not curved backward near apex ( Hu & Li 2017: 334 , Fig. 5 )... N. obtortus Assing, 2016 13 Ventral process of aedeagus provided with a pair of apically narrowed processes on dorsal side of the apex ( Hu et al . 2012: 38 , Fig. 12)............................................................................ N. luoi Hu & Li, 2012 - Ventral process of aedeagus lacking processes near apex..................................................... 14 14 Ventral process of aedeagus with small semi-circular excision at apex in ventral view ( Hu & Qiao 2019: 435 , Fig. 15)............................................................................... N. maoershanus Hu & Qiao, 2019 - Ventral process of aedeagus lacking excision at apex in ventral view............................................ 15 15 Ventral process of aedeagus with round apex in ventral view ( Hu et al . 2013: 87 , Fig. 4 )............................ 16 - Ventral process of aedeagus with truncate apex in ventral view ( Hu & Li 2017: 336 , Fig. 13)........................ 17 16 Dorso-lateral apophyses of aedeagus with round apex in lateral view ( Hu et al . 2013: 87 , Fig. 5 )................................................................................................. N. damingshanus Hu & Li, 2013 - Dorso-lateral apophyses of aedeagus with narrow apex in lateral view ( Ma et al . 2021: 582 , Fig. 8)................................................................................................ N. shengtangus Ma et al ., 2021 17 Dorso-lateral apophyses of aedeagus roundly widened at apex in ventral view ( Hu & Li 2017: 336 , Fig. 13)......................................................................................... N. huapingensis Hu & Li, 2017 - Dorso-lateral apophyses of aedeagus narrowed at apex in ventral view ( Hu et al . 2012: 39 , Fig. 16)... N. tani Hu & Li, 2012 18 Male sternite VII with small semi-circular emargination in middle of posterior margin ( Ma et al . 2021: 583 , Fig. 10)..... 19 - Male sternite VII lacking emargination or with very shallow emargination in middle of posterior margin............... 20 19 Dorso-lateral apophyses of aedeagus very strong, extending beyond apex of ventral process ( Hu et al . 2012: 41 , Fig. 28)................................................................................. N. megalobus Hu & Li, 2012 - Dorso-lateral apophyses of aedeagus very slender, not reaching apex of ventral process ( Ma et al . 2021: 583 , Fig. 12)........................................................................................ N. songi Ma et al ., 2021 20 Dorso-lateral apophyses of aedeagus extending slightly beyond apex of ventral process............................. 21 - Dorso-lateral apophyses of aedeagus not reaching apex of ventral process....................................... 22 21 Male sternite VII with posterior margin shallowly emarginated at middle (Hu & Li 2019: 437, Fig. 26); dorso-lateral apophyses of aedeagus slightly widened near apex in ventral view ( Hu & Qiao 2019: 437 , Fig. 28)...... N. yuyimingi Hu & Qiao, 2019 - Male sternite VII with posterior margin truncate at middle ( Hu & Li 2017: 340 , Fig. 26); dorso-lateral apophyses of aedeagus not widened near apex in ventral view ( Hu & Li 2017: 340 , Fig. 28)....................... N. chenyanae Hu & Li, 2017 22 Dorso-lateral apophyses of aedeagus very strong, distinctly expanded in ventral view ( Figs 5C, D ).................... 23 - Dorso-lateral apophyses of aedeagus very slender, hardly expanded in ventral view................................ 24 23 Ventral process of aedeagus with V-shaped excision at apex in ventral view ( Hu et al . 2012: 42 , Fig. 34); dorso-lateral apophyses of aedeagus with wide and round apex in ventral view ( Hu et al . 2012: 42 , Fig. 34)............. N. grandis Hu & Li, 2012 - Ventral process of aedeagus lacking distinct excision at apex in ventral view ( Figs 5C, D ); dorso-lateral apophyses of aedeagus with narrow apex in ventral view ( Figs 5C, D )............................................... N. yangmeius sp. n. 24 Ventral process of aedeagus extremely elongate, about twice as long as dorso-lateral apophyses ( Hu et al . 2013: 88 , Fig. 10).............................................................................. N. longilobus Hu & Li, 2013 - Ventral process of aedeagus not extremely elongate......................................................... 25 25 Apex of ventral process of aedeagus round ( Assing 2016: 307 , Fig. 4 )...................... N. bihamatus Assing, 2016 - Apex of ventral process of aedeagus divided into two straight branches in ventral view ( Hu & Li 2017: 338 , Fig. 23)..... 26 26 Posterior margin of male sternite VII slightly prominent at middle ( Hu & Li 2017: 338 , Fig. 21); dorso-lateral apophyses of aedeagus slightly curved in lateral view ( Hu & Li 2017: 338 , Fig. 24).......................... N. exilis Hu & Li, 2017 - Posterior margin of male sternite VII truncate at middle ( Hu & Qiao 2019: 438 , Fig. 31); dorso-lateral apophyses of aedeagus straight in lateral view ( Hu & Qiao 2019: 438 , Fig. 34)............................. N. biacuminatus Hu & Qiao, 2019