se 
Stored-Grain Pests. 17 
corn, both in the field and in storage. Infestation begins in the field 
and is continued after the corn is placed in storage. The very 
characteristic injury 
is shown in figures 
92 and 23. The large 
amount of frass that 
is loosely webbed to- 
gether and fills the 
interstices between 
the kernels or is 
crowded into the 
cavities of kernels 
that have been eaten 
out is a reliable in- 
dication of the pres- 
ence of this pest. 
The pearly white 
5 < : : _ Fic. 18.—Kernels of wheat showing the small round emer- 
eggs are laid singly gence holes that prove that the Angoumois grain moth 
or occasionally in has developed in the seed, thus reducing the weight 
twos or threes. The somewhat over 50 per cent. (Back.) 
pinkish larve feed on the seed, husk, and cob with equal relish. 
Though capable of serious injury to corn, in particular as it comes 
Pic. 19.—The pink cornworm: Moth, much enlarged; head and Jeg more enlarged. ‘The 
moth has a wing spread of a little less than half an inch. (Chittenden.) 
to maturity in the field, and while in the cribs on Southern farms, 
the pink cornworm is seldom a serious pest of commercial shipments. 
of ° é 
fsa61 —22——s 
