14 Farmers’ Bulletin 1260. 
= ANGOUMOIS GRAIN MOTH 
/), DEVELOPMENT IN WHEAT 
Mother moth (a)lays egg (h) on kevwialtc). . 
Larva atches from egg. griaws into 
kernel by hole no larger t an pin prick. 
There is al- f Kernel cut. showing entrance. 
Ways anaaull i t channel. arva feeds an 
or parent roth : ie grows enlarging cavity. 
which laysan egg \ : 
ori ae w neat and ets 
rs Hage that sees 
romthis egg an 1. — 
eats intot 2 seed. - fl he The full grown larvais as 
Wherever there is a FE 4% long as kernel in which i 
large hole in kernel cé : 4 has eaten out a large cavily. 
through which a hee . : 
has left the seed there 
- 
is just as surely another : 
hol. : serhaps here co | 
that : can not be seen oe b The pupa is the slage 
without a magnifying id N \ : between AYVA art 
glass, somewhere else in i] Jee BR, : adult moth. | 
the seed through which the 4 | 
insect entered. a ontane ous | 
generation does not occur. 
lusects do not develo | 
trom the germ of fie ala es : 7 The eth les 
ernel by roun 
hole —. shown. 
—— 
Fic. 15.—Life cycle of Angoumois grain moth on wheat. (Back.) 
