Vaz-De-Mello, F. Z., W. D. Edmonds, F. C. Ocampo, and P. Schoolmeesters. “A Multilingual Key to the Genera and Subgenera of the Subfamily Scarabaeinae of the New World (Coleoptera: Scarabaeidae)”. Zootaxa, vol. 2854, no. 1, Apr. 2011, pp. 1–73, doi:10.11646/zootaxa.2854.1.1.