Caldara, Roberto, and Dora Aguín-Pombo. 2008. “A New Synonym and New Records of Tychiini (Coleoptera, Curculionidae) from Madeira Archipelago and Selvagens Islands”. Zootaxa 1781 (1). Auckland, New Zealand:63–66. https://doi.org/10.11646/zootaxa.1781.1.6.