Gyllenhal, L. (1827): Insecta Svecica descripta a Leonardo Gyllenhal. Classis I. Coleoptera sive Eleuterata. Tom I. Pars IV. Cum appendice ad pares priores. Lipsiae: Friedericum Fleischer, viii + (2) + 761 + (1) pp.
Further Description
Caldara, R. & O'Brian, C. W. (1998): Systematics and evolution of weevils of the genus Bagous. VI. Taxonomic treatment of the species of the western Palearctic Region (Coleoptera Curculionidae). - Mem. Soc. Ent. Ital., Genova 76: 131-347, 220 Fig.