INSECTS INJUKIOUS TO CORN. 



139 





4 5 



Fig. 76. —The Corn Root-aphis i Aphis mndirddi'-is Forbes). 1, 

 wingless viviparous female; a, apex of abdomen; 2, antennae 

 of same; S, pupa; 4, winged viviparous femal?; 5, antenna of 

 same. (After Forbes.) 



