Up to 400 or more eggs can be laid by each female.
Larger larvae range from green to black, and often have a broad stripe along each side of the body.
The larger larvae feed singly. After five to six instars, the larvae burrow into the soil to pupate. The pupal stage persists 7 to 10 days but may be much longer at cooler temperatures. Although newly emerged adults can be found throughout the year in central and southern California, major emergences and migration flights are usually recorded in spring through late summer. However, larger larvae feed on petioles and cause significant crop loss.