Life History Notes of Cranhervy Lake Homoptera 103 



at time of emergence. No evidence that there is change in color 

 after individuals are once fully mature was found as uncolored 

 specimens kept in confinement either if bred or collected from 

 trees showed no decided change of color when kept several days 

 with food supply. 



Adults both with and without the bright red marks have been 

 taken in large numbers from a great variety of trees, including 



Fig. 44. — Psyllia Irimaculata Crawford: leaves (taken from fire 

 cherry in field) show nymphs covered with flocculent masses. Photo 

 by Drake and Fivaz. - 



