Definition of acorn moth
: a small, whitish-gray moth (Valentinia glandulella synonym Blastobasis glandulella of the family Blastobasidae) chiefly of the central and eastern United States with larvae that develop inside nuts and especially acorns As the autumn wears on, increasing numbers of acorn moths … gain access to acorns on the ground through insect holes, cracks, and sprouts.— Mark W. Moffett, National Geographic, June 1989
Note: The larvae of acorn moths frequently enter acorns through holes made by acorn weevils.
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