Gosik, R. and Sprick, P. 2012. Morphology and identification of the pupae of seven species of the genus Otiorhynchus Germar, 1822 (Coleoptera, Curculionidae, Otiorhynchini). Zootaxa. 3483, 1 (Sep. 2012), 39–57. DOI:https://doi.org/10.11646/zootaxa.3483.1.3.