A taxonomic review of the known Taiwanese taxa of the pericaline Lebiini, this paper includes a key to the genera, keys to species, descriptions, and redescriptions of all species, illustrations, geographic range maps, re-rankings, and new synonymies. In total 34 species are treated, nine of which are described as new. A new genus and new species are as follows:Bellavalentisgen. n., (type speciesDolichoctiskuzugamiiShibata, 1967);Amphimenesabsensacidussp. n.;Amphimenesbeichatiensissp. n.;Amphimenescarinacaulissp. n.; Catascopus(s. str.)asahartisp. n.; Catascopus(s. str.)viridiorchissp. n.; Coptodera (Coptoderina) occultasp. n.;Dolichoctisbadiadorsissp. n.;Dolichoctisdilatatasp. n.;Moctherusobscurabasissp. n.After close examination of the type material of several species, we were able to determine thatCoptoderinachaudoirianguilipennis(Nakane and Okhura) is a junior synonym of Coptodera (Coptoderina) chaudoiri Andrewes,syn. n.andCoptoderanobilisJedlička is also a junior synonym ofC.chaudoiri,syn. n.DolichoctisstriatusformosanusHabu is a junior synonym ofDolichoctisrotundata(Schmidt-Goebel),syn. n.Dolichoctis (Mochtherus) uenoi Habu is a junior synonym ofMochtherusluctuosusPutzeys,syn. n.PericalusformosanusDupuis was recently ranked as a subspecies ofPericalusornatusformosanusDupuis. After consideration of the several consistent taxonomic characteristics and also considering its allopatric distribution with all other species ofPericalus, we believePericalusformosanusDupuis to be a valid species,stat. resurr.The monobasic genusPseudomenarus(type speciesPseudomenarusflavomaculatusShibata, 1964) is established as conspecific with members of the genusFormosiellaJedlička, 1951,comb. n.Species previously recorded from Taiwan that are not present here include:AmphimenespiceolusBates;CatascopusaequatusDejean;Catascopusfacialis(Wiedemann)CoptoderainterruptaSchmidt-GoebelCoptoderaflexuosaSchmidt-Goebel andPeripristusater(Laporte). The pericaline taxa of Taiwan are arranged in 14 genera, five subgenera, and 34 currently known species. Notes on collecting circumstances, habits, and habitat are included when known.
