A number of inquiries have been received at the station concerning the Apple Curculio, and I therefore give the following information concerning it.
The Beetle varies much in size. The largest specimen in the station collection measures 3-16 of an inch. The beetles are often mistaken for the plum curculio, but they are easily distinguished from that species by the long, slender, somewhat curved beak and by the two prominent humps on the posterior portion of each wing-cover where the color is rust-red.
Gillette, C. P.
"The Apple Curculio,"
Bulletin: Vol. 1
, Article 6.
Available at: https://lib.dr.iastate.edu/bulletin/vol1/iss11/6