Allsopp, P. G., & Hudson, P. J. (2019).

Novapus bifidus Carne, 1957, a primary homonym and synonym of Novapus bifidus Lea, 1910 (Coleoptera: Scarabaeidae: Dynastinae)

. Zootaxa, 4560(3), 576–578. https://doi.org/10.11646/zootaxa.4560.3.9