The European Corn Borer. q 
Within a few hours after hatching many of the borers begin to 
migrate to various parts of the same plant or to other plants in the 
¥ig. 5.—The European corn borer: a, Eggs; b, cornstalk sectioned to show larve in their 
burrows; c, cornstalk sectioned to show pupa inclosed within pupal chamber ; d@, corn- 
stalk sectioned to show pupa inclosed within pupal chamber in dry cornstalk ; e, female 
moth; f, male moth. All somewhat enlarged. 
vicinity. If the attacked plant is just developing a tassel, some of 
the small borers enter the tassel buds and feed within (Fig. 3) while 
5781°—22 2 
