Gyllenhal, L. (1813): Insecta Svecica descripta a Leonardo Gyllenhal. Classis I. Coleoptera sive Eleuterata. Tom I, Pars III. Scaris: F. J. Leverentz, (4) + 730 + (2) 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.