Abstract
Nomenclatural changes within the treehopper tribe Telamonini are made as follows based on an examination of the type material of several species: the genus Helonica Ball is a junior synonym of Telamona Fitch, n. syn.; Telamona excelsa (Fairmaire), n. comb., with n. syn. T. unicolor Fitch; T. projecta Butler is reinstated from synonymy as a valid taxon for the North American taxa historically placed in Helonica; and Palonica albidorsata (Fowler) from Mexico, n. comb., is reinstated from synonymy based on morphological differences with T. excelsa and T. projecta. Lectotype designations are clarified for T. fasciata and T. unicolor based on specimens in the New York State Museum (NYSM). As a result of this work, the tribe Telamonini contains 68 species in 10 genera, the genus Palonica contains 7 species, and the genus Telamona contains 29 species.