128 INDIAN CORN CULTURE. 
velopment. Ants are nearly always found 
associated with the aphis, they feeding on a 
liquid known as honey-dew, which exudes from 
the body of the louse. There seems to be no 
FIG. 43.—CORN-LEAF PLANT LOUSE, Aphis maidis, Forbes. A. Winged female. 
δ. Wingless female that gives birth to young. (Οὐ. Pupa. (After Forbes.) 
effective method at present known for destroy- 
ing these lice on a practical basis. 
Corn root worm (Diabrotica longicornis, Say). 
The developed beetle is green or yellowish- 
green, about a quarter of an inch long, and re- 
sembling in form the striped squash beetle. 
From the latter part of July till the blossom- 
ing period is past the beetle feeds on the pollen 
and silk. When ready to lay her eggs the 
female descends to the ground about the roots 
of the corn and deposits a considerable number 
of minute white eggs. From these the next 
