Taxonomy Of The Genus Trissemus(Coleoptera: Staphylinidae: Pselaphinae)from China

Members of the ant-loving beetle genus Trissemus(Coleoptera: Staphylinidae: Pselaphinae: Brachtglutini),commonly found in forestry leaf litter.Species are predatory on springtails,mites,and other small invertebrates.They are believed to play an important role in food web and ecological chain,and have economic value.Prior to this study,more tha 130 species of Tirssemus have been known worldwide,widely scattered in Eurasia and Africa.Only 1 species recorded from Taiwan,China,and no species known from mainland China.Based on an examination of over 400 specimens collected from 10 provinces of China,the Chinese species of Trissemus are treated here,revealing the following results:1.Fifty-eight Trissemus species found from China.Among them,fifty-six are new species,from Anhui,Ningxia,Zhejiang,Sichuan,Guizhou,Yunnan,Guangxi,Fujian,Xizang and Taiwan: Trissemus bariensis sp.n.(Xizang),T.bicolor sp.n.(Sichuan),T.biwenxuani sp.n.(Xizang),T.brevicornis sp.n.(Anhui),T.bunun sp.n.(Taiwan),T.capitonis sp.n.(Sichuan),T.chenyandongi sp.n.(Fujian),T.cuonaensis sp.n.(Xizang),T.dichotomus sp.n.(Zhejiang),T.dishuiensis sp.n.(Sichuan),T.dulongjiangensis sp.n.(Yunnan),T.emeishanus sp.n.(Sichuan),T.erlangshanus sp.n.(Sichuan),T.falcatus sp.n.(Xizang),T.fengyangshanus sp.n.(Zhejiang),T.hongchunpingensis sp.n.(Sichuan),T.hujiayaoi sp.n.(Guangxi),T.inflatus sp.n.(Yunnan),T.jiajinshanus sp.n.(Sihcuan),T.jinxiuensis sp.n.(Guangxi),T.latifurcus sp.n.(Zhejiang),T.lexiangensis sp.n.(Sichuan),T.liangluensis sp.n.(Sichuan),T.lilizheni sp.n.(Xizang),T.liupanshanus sp.n.(Ningxia),T.longilipes sp.n.(Anhui),T.longwangshanus sp.n.(Zhejiang),T.mianningensis sp.n.(Sichuan),T.micangshanus sp.n.(Sichuan),T.mirabilis sp.n.(Yunnan),T.motuoensis sp.n.(Xizang),T.obscurus sp.n.(Guangxi),T.pengi sp.n.(Sichuan),T.pengzu sp.n.(Zhejiang),T.petalosus sp.n.(Yunnan),T.qingliangensis sp.n.(Zhejiang),T.qiqiensis sp.n.(Yunnan),T.robustus sp.n.(Zhejiang),T.sagittiformis sp.n.(Guangxi),T.simplex sp.n.(Guangxi),T.songxiaobini sp.n.(Guangxi),T.tangliangi sp.n.(Yunnan),T.tengchongensis sp.n.(Yunnan),T.tibialis sp.n.(Guangxi),T.tongmuensis sp.n.(Fujian),T.triangulus sp.n.(Guizhou),T.tuyueyei sp.n.(Sichuan),T.vajra sp.n.(Guangxi),T.wangjisheni sp.n.(Xizang),T.wenii sp.n.(Taiwan),T.yaojiapingensis sp.n.(Yunnan),T.yeleensis sp.n.(Sichuan),T.yuehyunae sp.n.(Taiwan),T.zhaomingzhii sp.n.(Guizhou),T.zhaotiexiongi sp.n.(Zhejiang),T.zhoudeyaoi sp.n.(Sichuan);two Japanese species Trissemus clavatus and T.crassipes are found in Zhejiang,China.2.All species treated in this paper are described in detail.A taxonomic history,collecting method,distribution and illustrations of major diagnostic characters.Illustrations of habitus for all species,ans diagnostic characters for 56 species are given.3.Established paper database of the genus Trissemus.4.A list of Chinese Trissemus species is given.5.A key to the Chinese species of Trissemus is presented.6.The distribution of Chinese Trissemus species is mapped,and their pattern analyzed.