nut weevil

noun

any of several snout beetles of the genus Balaninus, the larvae of which live in and feed on nuts and acorns.

Origin of nut weevil

First recorded in 1795–1805

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

The nut-weevil lays her eggs in the young nut while it is still soft and its grub bores its way out in the fall.
Great Hike
Alan Douglas