202 



THE CANADIAN ENTOMOLOGIST 



and Ames, Iowa, having been found on cottonwood at the latter 

 locality. 



In New Jersey it has been found on both Carolina poplar 

 {Populus deltoides) and Lombardy Poplar (Populus nigra italica) 

 principally on the former. Over-wintering takes place in the egg 

 stage, the eggs being found in young twigs and hatching occurs 



Fig. 8. — Einpoasca Irijasciala Gill. 



during the last of May or first part of June. From three to four 

 weeks are required for the nymphal stages, and by the last of June 

 or first of July, adults of the first brood are present. Summer 

 eggs are then deposited in the tissue of young twigs, and these 

 hatch during the last week of July. By the last of August, adults 

 of a second- brood are present. Winter eggs are deposited during 



