APHID PESTS OF MAINE, II. WILLOW FAMILY. 



89 



forms rapidly developing from colonies near base of main 

 willow trunk. 



D ^ IE 



Fig. 45. Melanoxantherium cornicles all drawn to the same scale. 

 A, hicolor, alate viviparous ; B, salicti, alate viviparous ; C and D, 

 smithiae, alate and apterous viviparous ; E, antennatum apterous 

 oviparous ; F, salicis apterous viviparous. 



