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For Insects, Spiders & Their Kin
For the United States & Canada
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Species Hypera postica - Alfalfa Weevil

Weevil needs ID - Hypera postica Curculionidae - ? - Hypera postica Tan weevil with a brown stripe - Hypera postica Hypera postica Weevil - Hypera postica  Alfalfa Weevil - Hypera postica Alfalfa weevil? - Hypera postica Alfalfa Weevil - Hypera postica
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 Hyperinae (Clover and Alfalfa Weevils)
Genus Hypera
No Taxon (subgenus Hypera)
Species postica (Alfalfa Weevil)
Other Common Names
Alfalfa Leaf Weevil
Explanation of Names
Hypera postica (Gyllenhal 1813)
3.0-5.5 mm(1)
Adult with distinctive dark stripe along the back, larva green with white stripe, similar to clover leaf weevil [the latter cause no serious damage to alfalfa]
Native to Eurasia (Europe to C. Asia)(2), adventive and widespread in NA (across so. Canada & the lower US states) (3)(4)
Adults and larvae feed on alfalfa (3)
earliest record in our area: UT 1904(3)
One of the primary defoliators of alfalfa. The parasitic wasps Bathylplectes anurus and B. curculionis have been introduced into the US for biocontrol.
Internet References
Fact sheet (Cook et al. 2004)(3)