Ramírez-Ponce, A. and Morón, M.A. 2012. Revision of the genus Pachystethus Blanchard with description of three new species from Mexico (Coleoptera: Scarabaeidae: Rutelinae: Anomalini). Zootaxa. 3394, 1 (Jul. 2012), 1–24. DOI:https://doi.org/10.11646/zootaxa.3394.1.1.