Shockley, F. W., & Vandenberg, N. J. (2011). Notes on the taxonomic identity of Bystus hirtulus (Kirsch) and transfer from Endomychidae to Coccinellidae (Coleoptera: Cucujoidea), with designation of a lectotype for Alexia hirtula Kirsch. Zootaxa, 2868(1), 62–68. https://doi.org/10.11646/zootaxa.2868.1.3