Fifteen new species of Sathytes Westwood from China (Coleoptera, Staphylinidae, Pselaphinae), with an updated checklist of world species Author Yin, Zi-Wei C515106C-5782-4471-AE11-483B49606A67 Laboratory of Systematic Entomology, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai 200234, China. pselaphinae@gmail.com Author Shen, Qi 195E5F86-BD32-45F2-BF46-014394EF380F Laboratory of Systematic Entomology, College of Life Sciences, Shanghai Normal University, 100 Guilin Road, Xuhui District, Shanghai 200234, China. 2974259092@qq.com text European Journal of Taxonomy 2020 2020-10-26 722 37 74 journal article 10.5852/ejt.2020.722.1133 4134339 B9393832-6F0C-4649-AF54-CAAF43234326 Sathytes chengzhifeii sp. nov. urn:lsid:zoobank.org:act: 3DA68CF9-8416-4B33-A31B-C583A45AEC52 Fig. 4 Differential diagnosis The male of S . chengzhifeii sp. nov. is most similar to that of S . huapingensis sp. nov. from Guangxi , China and S . larifuga Shen & Yin, 2019 from Sabah, Borneo, with which it shares the unique, subtriangular basal protuberance of antennomere 11. The new species can be separated from the former by the larger body size ( 2.69–2.81 mm vs 2.49 mm ) and the more basal and more distal positions of the protuberance and apophysis of antennomeres 11 and 9, respectively; and from the latter by the relatively much smaller eyes in relation to the head, more elongate antennomeres 9 and 11, and more distal position of the apophysis of antennomere 9. Etymology The new species is named after Zhi-Fei Cheng, one of the collectors of the new species. Type material ( 5 specimens ) Holotype CHINA • ♂ ; Yunnan , Dehongmang ( ṞẌĖm ), Yingjiang County ( Ŋữn ), Tongbiguan Town ( Ŕae ẅđ ); 24°36′38.78″ N , 97°39′49.35″ E ; alt. 1382 m ; 18 Jul. 2019 ; Chen and Shen. leg.; mixed leaf litter, sifted ; SNUC . Paratypes CHINA • 1 ♂ , 2 ♀♀ ; same collection data as for holotype; SNUC • 1 ♂ ; same collection data as for holotype; near Mangna Road ( Ėďŵǿ ); 24°36′59.75″ N , 97°44′30.89″ E ; alt. 1550 m , 29 Jul. 2019 ; SNUC . Description Male MEASUREMENTS. AeL = 0.25 mm ; AnL = 1.25–1.29 mm ; AL = 0.73–0.78 mm ; AW = 0.86–0.89 mm ; TBL = 2.69–2.81 mm ; EL = 0.81–0.84 mm ; EW = 0.98–1.02 mm ; HL = 0.57–0.59 mm ; HW = 0.55– 0.57 mm ; LE = 0.21 mm ; LT = 0.11 mm ; PL = 0.58–0.60 mm ; PW = 0.57–0.58 mm . Body ( Fig. 4A ) reddish-brown, mouthparts and tarsi paler. Head approximately as long as wide. Each eye composed of about 20 facets; LE: LT = 1.9. Antennal clubs ( Fig. 4B ) formed by antennomeres 9–11; antennomere 9 ( Fig. 4C ) slightly elongate, each with long semi-membranous apophysis at basal ¼ of mesal margin; antennomere 10 strongly transverse, obconical; antennomere 11 ( Fig. 4B ) about 1.8 times as long as wide, each with single subtriangular and blunt basal protuberance covered with short tuft of setae at apex ( Fig. 4D ). Pronotum about as long as wide. Elytra strongly transverse. Abdomen widest at tergite 1 (IV) and narrowing apically. Aedeagus ( Fig. 4E ) flattened, slightly elongate, and slightly asymmetrical at apex. Female MEASUREMENTS. AnL = 1.27 mm ; AL = 0.86 mm ; AW = 0.95 mm ; TBL = 3.0 mm; EL = 0.83 mm ; EW = 1.05 mm ; HL = 0.62 mm ; HW = 0.60 mm ; LE = 0.17 mm ; LT = 0.16 mm ; PL = 0.69 mm ; PW = 0.65 mm . Similar to male in size. Each eye composed of about 14 facets; LE:LT = 1.6. Antennal clubs lacking modifications. Distribution China : Yunnan .