New species of Canthidium (Coleoptera: Scarabaeidae: Scarabaeinae) from Mexico

Two new species of Canthidium Erichson, 1847 (Coleoptera: Scarabaeidae: Scarabaeinae) from Mexico are described: Canthidium nebularum Moctezuma, Sanchez-Huerta, and Halffter, new species; and C. chimalapense Moctezuma and Halffter, new species. An updated key for the North American species is included, with a brief discussion on taxonomic and biogeographic relevance of the new taxa.