20 Farmers’ Bulletin 1260. 
of wheat. This larva 
spins a silken cocoon and 
transforms to a light- 
brown pupa from which 
the parent moth later 
emerges. The Indian 
meal moth may pass 
through its egg, larva, 
and pupa stages in about 
four weeks—during 
warm weather. 
The larva of the In- 
dian meal moth spins a 
web as it becomes full- 
grown, and leaves behind 
a silken thread wherever 
it crawls. When sacks of 
cracked corn, meal, or 
corn in the ear that has 
been previously injured 
by other pests become 
heavily infested, this 
webbing often is suffici- 
ently abundant to attract 
attention: The loosely 
clinging web shown on 
the ear of corn in figure 
29 is characteristic of 
this pest. 
Often many kernels drop 
MEDITERRANEAN 
FLOUR MOTH.” 
The Mediterranean 
flour moth has a wing 
spread of slightly less 
than one inch. Its hind- 
wings are a dirty white, 
but its forewings, which 
alone show when the 
moth is not flying, are a 
pale leaden gray with 
transverse wavy black 
from the ear when the shucks are removed because of the feeding of the pink cornworm larve. 
Lar of corn with portion of shuck removed to show surface feeding by larve of the pink cornworm, 
»- 
> 
-_v. 
Tia, 
markings. (See fig. 
30.) 
13 Bphestia kuehniella Zell, 
