Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada

Genus Smicronyx

Smicronyx quadrifer Casey  - Smicronyx quadrifer Curculionidae, lateral - Smicronyx Curculionidae on Wormwood, lateral - Smicronyx Smicronyx ovipennis LeConte - Smicronyx ovipennis Smicronyx? - Smicronyx Curculioninae? - Smicronyx Curculionidae 11 - Smicronyx Weevil - Smicronyx
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 Curculioninae
Tribe Smicronychini
Genus Smicronyx
Synonyms and other taxonomic changes
reviewed in Anderson (1962)(1)
Explanation of Names
Smicronyx Schönherr 1843
70 spp. in our area(2)
1.4-4.0 mm(3)
Difficult genus with many of the species sexually dimorphic. To accurately determine species it is advisable to have specimens of both sexes, and in good condition. Scale pattern will vary within a species but is normally consistent enough to be a useful character.(4)
holarctic, Afrotropical, Australian; most of NA to Nicaragua(5)(2)
hosts: mostly Asteraceae and Convolvulaceae(2)
Life Cycle
Larvae are in seeds or may cause galls(2)
Works Cited
1.The weevil genus Smicronyx in America north of Mexico
Anderson D.M. 1962. Proc. U.S. Nat. Mus. 113: 185–372.
2.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.
3.Weevils of South Carolina (Coleoptera: Nemonychidae, Attelabidae, Brentidae, Ithyceridae, and Curculionidae).
Janet C. Ciegler. 2010. Clemson University, Clemson, S.C. 276 pp.
4.Weevils of Kansas - A Manual for Identification
Glenn Arthur Salsbury. 2000. Private/Self.
5.A world catalogue of families and genera of Curculionoidea (Insecta: Coleoptera)
Alonso-Zarazaga M.A., Lyal C.H.C. 1999. Entomopraxis, Barcelona. 315 pp.