Taxonomic Revision of the Rare South American Dung Beetle Genus Holocanthon Martínez et Pereira, 1956 (Coleoptera: Scarabaeidae: Scarabaeinae: Deltochilini)

Holocanthon is a dung beetle genus distributed across South American open environments such as the Humid Chaco, the Brazilian Cerrado and the Argentinian Espinal, as well as some more forested localities in the southern Atlantic Forest and in the Bolivian and Argentinian Yungas. Considered monospecific for more than 60 years, the genus now includes two species: H. fuscorubrus (Blanchard, 1846), new comb. (= H. mateui Martínez et Pereira, 1956,...