Abstract
The genus Erymanthus Spinola, 1841 is taxonomically revised to include sixteen species. The species E. transversopustulatus n. sp. is described as new. Erymanthus concoloripennis Pic, 1932, n. syn. is placed in synonymy with E. bicolor Chapin, 1924, E. horridus var. semirufus Kuwert, 1893 is recognized as a distinct and valid species E. semirufus; E. variegatus Pic, 1950 n. syn. is synonymized with E. pustulosus Quedenfeldt, 1888. A key to the species, color photographs, genital figures and distribution maps are provided. Erymanthus ampliatus Hintz, 1902 is transferred to the genus Gyponyx Gorham, 1883 (= Gyponyx amplicatus (Hintz, 1902) n. comb.).