Taxonomy

Life Cycle

The soybean aphid is a small yellowish insect with a pair of blackish tailpipe-like extensions near the end of the abdomen, and a third (not black) extension at the tip. Adults of the soybean aphid may or may not have wings.

Adult soybean aphids are about 1/16th of an inch (2 mm) long.

The young look much like miniature wingless versions of the adults.