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TaxonomyBrowse
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Genus Tychius

Striped Curculionid in California - Tychius lineellus beetle - Tychius weevil - Tychius stephensi Curculionid - Tychius picirostris Weevil - Tychius stephensi Unknown Weevil - Tychius picirostris leguminous seed weevil - Tychius Weevil  - Tychius
Classification
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 Tychiini (Leguminous Seed Weevils)
Subtribe Tychiina
Genus Tychius
Explanation of Names
Tychius Germar 1817
Numbers
16 spp. in our area, incl. 4 adventive(1)
Identification
(2) - key North American species, but doesn't include some introduced species
(3) - new synomymies and distribution
(4) - key to 4 introduced species and modification of Clark's (2) key to include them
Food
on various Fabaceae; larvae feed on reproductive parts(1)(4)
Works Cited
1.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.
2.A taxonomic revision of the weevil genus Tychius Germar in America North of Mexico
Clark, W.E. 1971. Brigham Young University Science Bulletin Biological Series Volume XIII, #3.
3.North American Tychius: New synonymy and observations on phylogeny and zoogeography (Coleoptera: Curculionidae)
Clark, W.E. 1977. Entomologica Scandinavica, 8: 287- 300.
4.Tychius meliloti Stephens new to Canada with a brief review of the species of Tychius Germar introduced into North America...
R.S. Anderson and A.T. Howden. 1994. The Canadian Entomologist 126(6): 1363-1368.