• A small moth (Gelechia cerealella) which is very destructive to wheat and other grain. The larva eats out the interior of the grain, leaving only the shell.
An`gou`mois' moth' (?; 115). [ So named from Angoumois in France.] (Zoology) A small moth ( Gelechia cerealella ) which is very destructive to wheat and other grain. The larva eats out the interior of the grain, leaving only the shell. 
[n] - small moth whose larvae feed on kernels of stored grains
angoumois grain moth noun small moth whose larvae feed on kernels of stored grains