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Genus Curculio - Nut and Acorn Weevils

Small, round weevil - Curculio weevil  - Curculio Beetle - Curculio - male - female Pecan Weevil - Curculio caryae - female Curculio sp. - Curculio Weevils - Curculio - male - female Weevil - Curculio strange beetle on door - Curculio
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 Curculionini
Genus Curculio (Nut and Acorn Weevils)
Other Common Names
The word 'curculio' is used in common names of a number of weevils belonging to other taxa, sometimes other families
Explanation of Names
Curculio Linnaeus 1758
Numbers
~30 spp. in our area, >350 total(1)(2) [C. rubidus recently found in MI(3)]
Size
body 4.2–13.0 mm(3)
Identification
Long slender beak; body robust. In some species, female snout may be longer than the body (never in males).
Key to our species in(4)
Food
Associated with various Fagaceae, Juglandaceae, and Betulaceae(1)
Life Cycle
Female uses her long snout for boring into nuts/acorns, and deposits eggs there. Larvae feed inside the acorn/nut and emerge to pupate in the soil.
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 catalog of Coleoptera of America North of Mexico. Curculionidae: Curculioninae
Gibson L.P. 1985. USDA Agriculture handbook no. 529-143b. x + 13 pp.
3.Curculio rubidus Gyllenhal, 1836 (Coleoptera: Curculionidae: Curculioninae), a European weevil new to North America
Anderson R.S., Keller O., Prena J. 2013. Col. Bull. 67: 368-369.
4.Monograph of the genus Curculio in the New World (Coleoptera: Curculionidae). Part I. United States and Canada
Gibson, L.P. 1969. Miscellaneous Publications of the Entomological Society of America 6(5): 239-285.