Plant Societies Botanical Gardens Hort. Their favorite foods are eggplant, potatoes, tomatoes and related plants including petunias. They are marked with black stripes and an orange head covering. The eggs are bright yellow and are laid on the undersides of leaves.
Grubs are plump and red, with black spots and a black head.
Both adults and larvae chew leaves. One or two generations occur each year. The beetles overwinter in the adult stage. Colorado potato beetles are found in most parts of the United States and Canada, but especially in the eastern areas. Fall cleanup is important to prevent Colorado potato beetle infestations.