C.  Germann, ?Fourth contribution to the weevil fauna of Switzerland - with records of 20 species (Coleoptera, Curculionoidea)?, Mitteilungen der Schweizerischen Entomologischen Gesellschaft, vol. 83, pp. 17-35, 2010.

L.  Bedel, ?Recherches sur les Coleopteres du nord de l'Afrique. Recherches synonymiques?, Ann. Soc. Ent. Fr., vol. (6), pp. 195-202, 1887.

M. Angel Alonso-Zarazaga and Lyal, C. H. C., ?Addenda and corrigenda to 'A world catalogue of families and genera of Curculionoidea (Insecta: Coleoptera)'?, Zootaxa, vol. 63, pp. 1-37, 2002.