134 INDIAN CORN CULTURE. 
by eating the poisoned grass. This should be 
done just at nightfall. 
Stalk borer (Gortyna nitela, Guen). A full- 
grown worm is a little over an inch long, bluish- 
brown above, with three white lines on the 
back, the central one continuous, the others 
interrupted for a considerable space at the 
middle.* This worm is the product of eggs 
laid by a moth on grass or early-planted grain, 
When the eggs hatch the worm crawls down 
2 
Fig 48.—STALK BORER, Gortyna nitela,Guen. 1, moth; 2,worm. (After Riley.) 
into the stem of the plant. To prevent their 
ravages, Webster recommendsy one ounce of 
pyrethrum powder in two gallons of water, or 
one part crude carbolic acid to 100 parts water. 
Spray or sprinkle the young plants so this 
liquid will run down among the unfolded 
leaves. 
Chinch bug (Blissus leucopterus, Say). This is 
a true bug that is about three-twentieths of an 
inch long and one-third its length in breadth. 
*F. M. Webster: Bulletin 3, Purdue University, April, 
1885. 
+ Report Indiana State Board of Agriculture, 1885, p. 192. 
