Greenstriped Cucumber Beetle

These beetles are one-quarter inch long, have black heads, and green and black stripes on their wing covers. Eggs are laid in the soil near host plants such as cucumber, squash, melon, pumpkin, bean and corn. Upon hatching the larvae feed on the roots for about three weeks. Beetles pupate in the soil and emerge as adults in about 10 days. Adults cut off young seedlings and also feed on leaves, stems, and fruit. They can transmit bacterial wilt disease. Expect two or more generations per year.

Control: Handpicking is time-consuming but effective. Fabric row covers such as spun-bonded polyester provide an effective barrier between the insect and young plants. However, the covers should be removed during flowering to ensure pollination. Allow predators and parasites to manage these pests. Insecticides are available.