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TaxonomyBrowseInfoImagesLinksBooksData
Monograph of the genus Curculio in the New World (Coleoptera: Curculionidae). Part I. United States and Canada
By Gibson, L.P.
Miscellaneous Publications of the Entomological Society of America 6(5): 239-285, 1969
Cite: 697018 with citation markup [cite:697018]
[no online presence for this journal that I can find]

Keys and descriptions to the Curculio species of the U.S. and Canada.

Any luck?

...reputed to have confused matters even more :]

 
certainly is confusing
some very subjective characters...

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