Composite. Bean seedlings, green against yellow background. Egg and maggot cream-colored. Oval pupa light brown. Dark fly with pale wings folded back.

Figure 30. Seedcorn maggot fly, egg, maggot, and pupa (upper left). Damaged seedlings (lower left). Bean plant with maggots in lower stem (right).

Composite. Bean seedlings, green against yellow background. Egg and maggot cream-colored. Oval pupa light brown. Dark fly with pale wings folded back.

Illustration by C.D. Cushman, USDA.