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Genus Larinus

Weevil - Larinus planus Larinus from BC (3) 10.07.12 - Larinus obtusus Larinus planus Knapweed Weevils - Larinus obtusus Larinus minutus black and yellow weevil - Larinus turbinatus thistle weevil - Larinus planus Unknown Weevil - Larinus planus
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 Lixinae
Tribe Lixini
Genus Larinus
Explanation of Names
Larinus Dejean 1821
Numbers
5 spp. in our area, all recently introduced to control weeds(1)(2); ~180 spp. total
Identification
Stocky body, rounded and slightly oblate dorso-ventrally, black in color, and sparsely hairy
Range
native to the Old World, most diverse in warmer and dryer parts of the Palaearctic, esp. the Mediterranean and the Middle East; introduced in NA from so. Europe and now established across Canada and US (mostly in the northern and western states)
Food
on thistles and related members of Asteraceae
Remarks
used as biocontrol agents to combat invasive weeds(3)
See Also
Rhinocyllus conicus
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.Non-target plant use by a weed biocontrol agent in Idaho: host expansion or opportunistic behavior?
S.L. Clement, L.J. Smithb, J. Prena, M.D. Kleene, R.C. Johnson. 2009. Biocontrol Science and Technology 19(4): 455-461.
3.Identification tool for weevil biological control agents of aquatic and terrestrial weeds in the United States and Canada