Ahrens, D. and Pacheco, T.L. 2020. Maladera rugosa (Blanchard, 1850) new combination—a valid species and senior synonym of Maladera graeca Petrovitz, 1969 (Coleoptera: Scarabaeidae: Melolonthinae: Sericini). Zootaxa. 4759, 3 (Apr. 2020), 443–445. DOI:https://doi.org/10.11646/zootaxa.4759.3.12.