1. Aphid dark mahogany brown; found exclusively on chrysanthemum
(Fig. 46.) Chrysanthemum Aphid
Aphid pale yellow, green, pink, or red; may be found on chrysanthemum but occur on other plants as well.
2. Cornicles long, slender, and pale in color but sometimes dark at the tip; body 2.0 mm long (Fig. 47.) Green Peach Aphid
2.' Cornicles shorter and uniformly dark; body 1 to 1.8 mm long (Fig. 48) Melon or Cotton Aphid