64 



New York Staie College of Forestry 



Family PIESMIDAE 

 Piesma cinerea Say. 



One example, taken ''in flight," Barber Point, July, 1919, at 

 noon in the mess hall, by IMr. Marqnardt. 



Family TIN GIT I DAE 

 Corythucha pergandei Heidemann. 



Common on alder, taken at Barber Point, Plains and Wanakena 

 during the entire summer. This species spends the winter in the 

 adult state; there are two generations a year in the Adirondacks. 



Corythucha bellula Gibson. 



Common on alder, but not taken in the same association with 

 heidemanni. Barber Point and Wanakena, June, Julv and 

 August, 1917, 1919 and 1920. 



Corythucha marmorata llhler. 



Not common, swept from weeds at Barber Point, July, 1920. 



Corythucha mollicula Osborn and Drake (Fig. 25, c and d). 



Common on various species of willow, but not as abundant as 

 elegans Drake. Barber Point, Plains, Conifer and Wanakena dur- 

 ing the entire summer. This insect also hibernates during the 





Fig. 25. — a and b (lateral view of hood and medina carina), 

 Corythucha elegwns Drake; c and d (lateral view of hood and 

 median carina), Corythucha mollicula 0. &. D. 



