Abstract
EpodelmisHinton, 1973, is a monotypic genus of tiny riffle beetles known only from its type locality in Bolivia and from a single further record in Colombia. They are distinguished among the Neotropical Elmidae genera by the produced elytral apices, the tomentum belt on hypomera extending to the posterior margin, and the lack of discernible parameres in the male genitalia. After several years examining material from various localities from Brazil, we found two Epodelmis species: E. rosaHinton, 1973 (from Mato Grosso state) and Epodelmis anauasp. nov. (from Roraima state). Based on these specimens, and the study of paratypes of E. rosa, here we present a taxonomic review of the genus Epodelmis and its first records in Brazil. We also redescribe E. rosa, describe E. anauasp. nov., and provide illustrations of the habitus and diagnostic structures for both species.
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