Five new species of Nazeris Fauvel in Guangxi, China (Coleoptera, Staphylinidae, Paederinae) Author Hu, Jia-Yao Author Qiao, Yu-Jia text Zootaxa 2019 2019-01-08 4543 3 431 441 journal article 27696 10.11646/zootaxa.4543.3.8 a6fad20b-7037-4fec-abad-93014894e0db 1175-5326 2617913 5D85B2BA-EF35-4C83-A373-D07F382D6760 Nazeris yanzhuqii Hu & Qiao , sp. n. (Figs 6, 35–39) Type material. Holotype : CHINA : male, ‘ China : Guangxi Prov. , Xing'an County , Mao'ershan N. R., alt. 2000– 2140 m , 9–11.VII.2011 , Chen , Peng , Ma & Zhu leg.’ (SNUC). Paratypes : 10 males , 2 females , same data as holotype ; 5 males , 5 females , same data, except ‘ 10.VII.2011 , Zhong Peng leg. ’; 1 male , 4 females , same data, except ‘ 2100 m , 10.VII.2011 , Tang & He leg. ’; 1 male , 1 female , same data, except ‘ 2100 m , 9–10.VII.2011 , Tang L. & He W.-J. leg .’; 3 females , same data, except ‘ 2100 m , 10.VII.2011 , Tang L. & He W.-J. leg .’; 2 males , 1 female , same data, except ‘ 2000 m , 11.VII.2011 , Tang & He leg. ’; 4 males , 11 females , same data, except ‘ 2000– 2100 m , 22.VII.2012 , Hu & Song leg. ’; 3 males , 3 females , same data, except ‘ 1950–2000 m , 23.VII.2012 , Hu & Song leg. ’; 8 males , 6 females , same data, except ‘ 25°52'27''N , 110°24'44''E , beech forest, mixed leaf litter, humus, sifted, 1940 m , 29.VII.2014 , Peng , Song , Yu & Yan leg. ’. Description. Body length 4.5–5.6 mm ; forebody length 2.5–2.9 mm . Body (Fig. 6) dark brown; antennae and legs yellowish brown. Head ( Fig. 35 ) 0.95–0.99 times as long as wide; punctation dense and coarse, non-umbilicate, interstices lacking microsculpture; postocular portion approximately twice as long as eye length. Pronotum ( Fig. 35 ) 1.11–1.15 times as long as wide, 0.92–0.97 times as long and 0.78–0.83 times as broad as head; punctation as dense and as coarse as that of head; midline with very narrow or without impunctate elevation in posteriorly half; interstices lacking microsculpture. Elytra ( Fig. 35 ) 0.68–0.74 times as long as wide, 0.58–0.63 times as long and 0.95–1.00 times as broad as pronotum; punctation as dense and slightly finer than 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. 36 ) with posterior margin truncate at middle. Sternite VIII ( Fig. 37 ) with triangular posterior excision. Aedeagus ( Figs 38, 39 ) well sclerotized; ventral process wide, with parallel sides, with narrowly incised apex in ventral view, and with pair of small triangular basal laminae ventrally; dorso-lateral apophyses widened near middle in ventral view, extending beyond apex of ventral process. Distribution and habitat data. The species is known only from Mao'ershan in northeast Guangxi . The specimen was collected by sifting leaf litter at altitudes of 1940–2140 m . Comparative notes. This species is most similar to N. alatus Hu & Li (Hu & Li 2017 : 337, Figs 15–19 ) in general appearance and aedeagal characters, but can be separated by the impunctate elevation of the pronotum very narrow or absent ( Fig. 35 ), by the longer and wider ventral process of the aedeagus, with much smaller basal laminae ( Fig. 38 ), and by the wider dorso-lateral apophyses of aedeagus ( Figs 38, 39 ). Etymology. The specific epithet is dedicated to Zhu-Qi Yan, who collected some of the type specimens.