Cupello, Mario, and Fernando Z. Vaz-De-Mello. 2014. “Correction of the Type Species of the South American Genus Gromphas Brullé, 1837 (Coleoptera: Scarabaeidae: Scarabaeinae: Phanaeini)”. Zootaxa 3790 (2). Auckland, New Zealand:399–400. https://doi.org/10.11646/zootaxa.3790.2.7.