seed weevil

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Any of various small beetles of the family Bruchidae whose larvae bore into and feed on the dried seeds of peas, beans, and similar plants.

GNU Webster's 1913

1. n. (Zoöl.) any one of numerous small weevils, especially those of the genus Apion, which live in the seeds of various plants.

WordNet 3.0

1. n. a small beetle that infests the seeds of legumes