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 rnaidia, Forbes. A. winged female. 

 B. Winglees female that gives blrih to joung. C Pupa. (Alter 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 



