Gosik, Rafał, and Peter Sprick. “Morphology and Identification of the Pupae of Seven Species of the Genus Otiorhynchus Germar, 1822 (Coleoptera, Curculionidae, Otiorhynchini)”. Zootaxa 3483, no. 1 (September 14, 2012): 39–57. Accessed April 20, 2025. https://mapress.com/zt/article/view/zootaxa.3483.1.3.