Kohlmann, B. and Solís, Ángel (2025) “A review of the species groups of the Western Hemisphere Onthophagus Latreille (Coleoptera: Scarabaeidae: Scarabaeinae) using COI barcoding and gene trees”, Zootaxa. Auckland, New Zealand, 5604(4), pp. 401–447. doi: 10.11646/zootaxa.5604.4.1.