Sitona is a large genus of in the family Curculionidae native to the Nearctic and Palaearctic regions. Over 100 species have been described.[ Sitona is easily distinguished from related genera by flat, recumbent scales on the mandibles, by the absence of an oval scar on the mandibles, by short and broad rostrum with a deep, longitudinal, median groove, and by dense scales on the body.][Donald E. Bright, Patrice Bouchard. The Insects and Arachnids of Canada, Part 25: Coleoptera. Curculionidae. Entiminae. Weevils of Canada and Alaska. Vol. 2. Ottawa, NRC Research Press, 2008. . P. 178-203.]
Sitona specialize on , plants of the family Fabaceae. The larvae eat the [Korortyaev, B. A. and A. J. Velázquez de Castro González. (2011). A new species of the weevil genus Sitona Germar (Coleoptera: Curculionidae) from Mt. Hermon in Israel. Proceedings of the Zoological Institute RAS 315(1) 85-88.] and the adults eat the leaves. Several species of Sitona are important agricultural pests of legumes, especially in its native regions and introduced populations in South Africa, Australia and New Zealand.
Species include:
