New data on the genus Syndicus Motschulsky (Coleoptera: Staphylinidae: Scydmaeninae) from Yunnan, southern China Author Zhou, De-Yao Author Yin, Zi-Wei text Zootaxa 2017 4247 5 569 576 journal article 33328 10.11646/zootaxa.4247.5.3 ab542bff-5d47-4367-89cd-112b7f3e938a 1175-5326 439172 15AF16CE-E14D-4D49-AECF-13ECAA7FAE0B Key to Syndicus species of China 1 Base of antennomere XI nearly as broad as apex of antennomere X; antennomere XI shorter than half length of antennomere X (subgenus Syndicus )................................................................................... 2 - Base of antennomere XI much narrower than apex of X; antennomere XI longer than half length of antennomere X (subgenus Semisyndicus )....................................................................................... 4 2 Body length exceeding 4 mm ( Yin et al. 2014 : fig. 1). ( Zhejiang, Fujian, Hunan, Guangdong ).............. S . jaloszynskii - Body length less than 4 mm ............................................................................ 3 3 Body length less than 2.7 mm , each elytron with marginal impression on sides of elytra ( Yin & Zhou 2015: figs 1A, 4A ). ( Hainan )...................................................................................... S . qiong - Body length no less than 2.9 mm , each elytron lacking marginal impression. ( Yunnan ).................. S . himalayanus 4 Pronotal disc glossy, without well-marked punctures ( Yin & Li 2015: fig. 1B ). ( Hainan ).................. S . hainanicus - Pronotal disc with coarse, sharply marked punctures........................................................ 5 5 Body length less than 2.5 mm ( Yin & Li 2015: fig. 1A ). ( Hainan )................................ S . grossepunctatus - Body length exceeding 2.5 mm ......................................................................... 6 6 Pronotal disc relatively sparsely punctate ( Yin & Zhou 2016: fig. 5A ). ( Yunnan ).......................... S . sinensis - Pronotal disc relatively densely punctate ( Fig. 5A ; Yin & Zhou 2016 : fig. 5D).................................... 7 7 Body length 3.21 mm , endophallus with a C-sharped sclerite ( Fig. 4 B). ( Yunnan )........................ S . long sp. n. - Body length 3.02–3.05 mm , endophallus without a C-shaped sclerite ( Jałoszyński 2008: fig. 3 ). ( Sichuan )... S . sichuanicus