Eggs can be laid in the soil, on grain, on leaves, on seeds, or in plants themselves. Larvae feed voraciously once they emerge, often causing damage to foliage and/or roots with some damaging stem tissue as borers. Eventually the larvae pupate and mature adult beetles emerge. Adult beetle activity is variable depending on the species and availability of food sources; however, feeding damage often results in chewing damage and skeletonization of leaves.
Beetle control begins with plant inspection. Spotting eggs or larvae early makes control easier to maintain. Trapping adults early in the season can also be helpful in identifying and monitoring pests before they become severe issues.