In crucifer plots, incandescent lights attracted many seed-corn beetles,Agonoderus leconteiChandoir andA. comma(F.), which were most prevalent in rows nearest the lights.Damage by the cabbage maggot,Hylemya brassicae(Bouché), to rutabaga and radish plantings was significantly lower in lighted plots than in unlit controls. Seedcom beetles were efficient predators of cabbage maggot immature stages in the laboratory.