FIG. 179. Melon aphis. (Greatly enlarged) 



a, winged female ; a', enlarged antenna of same ; ab, dark female (side view), sucking juice 



from leaf ; b, young nymph ; <:, last stage of nymph of winged form ; d, wingless female. 



(After Chittenden, United States Department of Agriculture) 



FIG. 180. Mealy-bug (Dactylopius longifilis], female and winged male. (Enlarged) 



(After Comstock, United States Department of Agriculture) 



130 



