The genus Trichonius Bates, 1864 and its species are redescribed. Eight species are recognized, of which five are described as new: Trichonius minimus sp. nov., T. bellus sp. nov. and T. griseus sp. nov. from French Guiana and Brazil; T. affinis sp. nov. (Mato Grosso), and T. atlanticus sp. nov. (Bahia, Minas Gerais) from Brazil. All the species are illustrated and a key to species provided.
Acanthocinini; Neotropical; new species; taxonomy
