Uliana, M., A. Liberto, and P. Leo. β€œOn the Taxonomy of the Italian Endemic Hoplia dubia (Rossi, 1792), With the Description of Two New Species (Coleoptera: Scarabaeidae: Melolonthinae)”. Zootaxa, vol. 4320, no. 2, Sept. 2017, pp. 201–224, doi:10.11646/zootaxa.4320.2.1.