Cyrtepistomus castaneus, the Asiatic oak weevil, is a species of Asian broad-nosed weevil in the beetle family Curculionidae.

[1][2][3][4] It is native to Asia, and was first found in North America in 1933.

Larvae feed on root hairs in soil, whereas adult beetles are defoliators of Quercus and Acer rubrum trees.

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