Cupello, M. and Vaz-De-Mello, F.Z. 2014. Revalidation of the Brazilian Atlantic Forest dung beetle species Coprophanaeus (Metallophanaeus) machadoi (Pereira & d’Andretta, 1955) (Coleoptera: Scarabaeidae: Scarabaeinae: Phanaeini) based on morphological and distributional evidence. Zootaxa. 3869, 4 (Oct. 2014), 435–451. DOI:https://doi.org/10.11646/zootaxa.3869.4.7.