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Species Sitona cylindricollis - Sweetclover Weevil

Broad-nosed Weevil - Sitona cylindricollis Sweetclover Weevil - Sitona cylindricollis weevil - Sitona cylindricollis Broad-nosed Weevil - Sitona cylindricollis Sitona cylindricollis - male Weevil - Sitona cylindricollis Entiminae? - Sitona cylindricollis Sweetclover Weevil? - Sitona cylindricollis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Curculionoidea (Snout and Bark Beetles)
Family Curculionidae (Snout and Bark Beetles)
Subfamily Entiminae (Broad-nosed Weevils)
Tribe Sitonini
Genus Sitona
Species cylindricollis (Sweetclover Weevil)
Explanation of Names
Sitona cylindricollis Fåhraeus 1840
3.6-5 mm
Body lacking erect setae, exept for some above eyes ("eyebrows"), covered with dark and greyish scales, the latter condensed into 3 indistinct bands on pronotum and a conspicous spot on base of elytra near shoulder. Remainder of elytra +/- mottled.
native to w. Palaearctic (to e. Siberia), introduced and now widespread in NA (north to 55°N)(1)(2)
Prefers sweetclover (Melilotus spp.) among other Fabaceae
important pest of sweetclover; earliest NA record: QC 1924(1)
Internet References
Works Cited
1.Insects and Arachnids of Canada Series, Part 25. Coleoptera, Curculionidae, Entiminae.
Donald E. Bright, Patrice Bouchard. 2008. 2008. NRC Research Press, Ottawa, Ontario, Canada.
2.Coleoptera Poloniae
3.University of Alberta Entomology Collection