F. W. Pelsue, Jr. and C. W. O’brien, “A redefinition of the Curculionini of the world, with a key to subtribes and genera, and two new genera: Pseudoculio and Megaoculis (Coleoptera: Curculionidae: Curculioninae)”, Zootaxa, vol. 3102, no. 1, pp. 27–49, Nov. 2011.