The female s beak is as long or longer than the body.
Immature larvae are white.
This injury causes the nuts to shrivel, turn black inside, and drop. Damaged nuts can sometimes be recognized by a tiny dark puncture that extends through the shuck and unhardened shell. However, similar malformations are caused by other insects and mechanical injury. Prior to shell hardening, the presence of a larva in the nut indicates damage by some other insect, usually nut curculio or hickory shuckworm. Pecan weevil grubs are not found in nuts with unhardened shells.