Moreno, J. C. N., & Orozco, J. (2009).

Larval and pupal descriptions for the genera Podischnus and Heterogomphus (Scarabaeidae: Dynastinae: Oryctini)

. Zootaxa, 2168(1), 34–44. https://doi.org/10.11646/zootaxa.2168.1.2