A taxonomic revision of the New World Onthophagus Latreille, 1802 (Coleoptera: Scarabaeidae: Scarabaeinae) of the osculatii species-complex, with description of two new species from South America

The taxonomy of the osculatii complex of the hircus group is revised, with descriptions of two new species from South America (Onthophagus chacoensis sp. nov. and Onthophagus basicarinatus sp. nov.). We provide illustrated keys to the species assigned to the complex, along with descriptions and updated geographical distributions of the known Onthophagus. A neotype is designated for O. osculatii Guérin-Méneville, while lectotypes are designated for four species names. Onthophagus insularis Boheman, originally described from Tahiti, is instead considered to be an American species belonging to the osculatii complex. www.zoobank.org/urn:lsid:zoobank.org:pub:8597804C-DC30-454C-808D-DC56B0….