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Shockley, F. W.; Vandenberg, N. J. 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 2011, 2868, 62–68.