Pomona College Journal of Entomology 



545 



APTEROUS VIVIPAROUS FEMALE (Figure 180 B) 



Length of body i nini., greatest width of abdomen 2. 1 mm., body robust. 



Prevailing color — Gray or silvery white due to the white powdery covering 



over the green body. Head and thorax — Very nuieh narrower than the abdomen. 



Eyes — Dark red, larger than tho.se of winged form. Antennae — Much longer 



than the body, all articles dusky except I, II and basal one-fourth of III which 



Figure 180. Macrosiphum albifrons 



A, winged viviparous female; B, apterous viviparous female: a, article III. 

 winged female; b, cornicle of apterous female; c, cornicle of winged female. 



of 



