10 
Farmers’ Bulletin 1156. 
' Mother woth te) lays egg (b) on kernel (c). 
t Larva hatches from egg, gnaws into 
kernel by hole no larger t an pin prick. 
The re is al- 
bie fs: an adult 
a a moth 
w ich aysane 
sileekeres 
alarva that hatches 
from this egg and 
eats into the seed. 
Wherever there is a 
large hole im kernel 
through which amoth 
has left the seed theve 
is just as surely another 
ole , erhaps so small 
that eee nol be seen 
without a magnifying 
lass. somewhere else in 
the seed through which the 
insect entered. S ontaneous 
generation does not occur. 
Insects do not develo 
from the germ of the cleat: 
ch annel . 
grows ,enlarging cavity, 
N i 
f: ; hole 
Kernel cut showing entrance 
AYVaA feeds and 
Ths full grown larva is ‘As 
long Aas 
has eaten out alarge cavity, 
ernel in which t 
The upat the stage 
betwen Lae ane 
adult moth. 
a.” 2 The moth leaves 
| Kerne »y YOUNG 
shown. 
ic, 8.—Development of Angoumois grain moth on wheat. Life cycle. 
