Top view of aphid has grenade shape, with slightly pointed cauda at tip of abdomen flanked by 2 short cornicles. Two dots on each segment. Black and white art.

Figure 15A. Corn leaf aphid wingless adult.

Top view of aphid has grenade shape, with slightly pointed cauda at tip of abdomen flanked by 2 short cornicles. Two dots on each segment. Black and white art.

Illustration by USDA.