29 Farmers’ Bulletin 1294. 
of the body varies from light brown or dark brown to pink. Each 
segment, or division of the body, bears a row of small dark-brown 
spots, while several narrow dark-brown or pink lines extend length- 
wise of the body. The under side of the body is flesh colored and 
devoid of markings. 
As soon as warm weather begins, in April or May, the borers re- 
sume their activities, although little or no feeding takes place at this 
period. 
About the middle of May the borer cuts a small circular opening 
from its tunnel to the surface of the plant in order to provide an 
Fic. 17.—Gladiolus stems showing Huropean corn borer infestation. 
exit for the future moth. It then closes this hole with a thin partition 
of silk and retreats into its tunnel to a point near the last feeding 
or shelter place, where it spins a thin cocoon. Inside this cocoon 
the borer changes into the pupa or resting stage (Fig. 5, c,d; Fig. 20). 
The pupa is shuttle shaped, light brown or dark brown, and from 
one-half to five-eighths of an inch in length. After remaining in 
this condition for about 19 days, or until the first week of June, 
the skin of the pupa splits and the fully developed adult or moth 
emerges. 
The female moth (Fig. 21) has a robust body and a wing ex- 
panse of a little more than an inch. The general color is quite 
variable, and represents all shades from pale yellow to light brown. 
The outer thirds of both the forewing and hindwing are usually 
t 
