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Species Calomycterus setarius - Imported Long-horned Weevil

Weevil - Calomycterus setarius Cute Little Round Weevil - Calomycterus setarius Maybe Sitona? - Calomycterus setarius Curculionidae, lateral - Calomycterus setarius Sciaphilus asperatus  - Calomycterus setarius Curculionidae - Calomycterus setarius Calomycterus setarius Weevil - Calomycterus setarius
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 Cyphicerini (Oriental Broad-nosed Weevils)
Genus Calomycterus
Species setarius (Imported Long-horned Weevil)
Explanation of Names
Calomycterus setarius Roelofs 1873
setarius = 'bristled'
3.0-3.5 mm(1)
see detailed description in(1)
native to Japan, adventive in NA and now common in much of e. US (west to NE-KS) and adjacent Canada (so. QC, e. ON)(1)
in OH, adults emerge in late Jun and become abundant during Jul-Aug(2)
feeds on various herbaceous plants(1), incl. alfalfa and red clover(2)
Life Cycle
may be very abundant on soybean crops and defoliate the seedlings(1); when abundant, they crawl on humans, vehicles and in dwellings on walls, ceilings, furniture or even food on tables, and can cause complaints by homeowners(2)
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.Ohio State University Extension fact sheets