Borovec, R., & Skuhrovec, J. (2019).

A taxonomic study of the South African terricolous weevil genus Pentatrachyphloeus Voss (Coleoptera: Curculionidae: Entiminae: Trachyphloeini)

. Zootaxa, 4574(1), 1–93. https://doi.org/10.11646/zootaxa.4574.1.1