Three cabbage aphids. C, at bottom, is top view with spread wings. B, at center, is side view with wings at rest. A, at top, is wingless. Black and white art.

Figure 15A–C. Cabbage aphid wingless adult (A) and side view (B) and top view (C) of winged forms.

Three cabbage aphids. C, at bottom, is top view with spread wings. B, at center, is side view with wings at rest. A, at top, is wingless. Black and white art.

Illustration by USDA.