ABSTRACT: 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: Bellavalentis gen. n., (type species Dolichoctiskuzugamii Shibata, 1967); Amphimenesabsensacidus sp. n.; Amphimenesbeichatiensis sp. n.; Amphimenescarinacaulis sp. n.; Catascopus(s. str.)asahartisp. n.; Catascopus(s. str.)viridiorchissp. n.; Coptodera (Coptoderina) occultasp. n.; Dolichoctisbadiadorsis sp. n.; Dolichoctisdilatata sp. n.; Moctherusobscurabasis sp. n. After close examination of the type material of several species, we were able to determine that Coptoderinachaudoirianguilipennis (Nakane and Okhura) is a junior synonym of Coptodera (Coptoderina) chaudoiri Andrewes, syn. n. and Coptoderanobilis Jedli?ka is also a junior synonym of C.chaudoiri, syn. n. Dolichoctisstriatusformosanus Habu is a junior synonym of Dolichoctisrotundata (Schmidt-Goebel), syn. n.Dolichoctis (Mochtherus) uenoi Habu is a junior synonym of Mochtherusluctuosus Putzeys, syn. n. Pericalusformosanus Dupuis was recently ranked as a subspecies of Pericalusornatusformosanus Dupuis. After consideration of the several consistent taxonomic characteristics and also considering its allopatric distribution with all other species of Pericalus, we believe Pericalusformosanus Dupuis to be a valid species, stat. resurr. The monobasic genus Pseudomenarus (type species Pseudomenarusflavomaculatus Shibata, 1964) is established as conspecific with members of the genus Formosiella Jedli?ka, 1951, comb. n. Species previously recorded from Taiwan that are not present here include: Amphimenespiceolus Bates; Catascopusaequatus Dejean; Catascopusfacialis (Wiedemann) Coptoderainterrupta Schmidt-Goebel Coptoderaflexuosa Schmidt-Goebel and Peripristusater (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.
