Eggs hatch in 1 to 2 weeks, larvae drop to the ground, and enter the soil where they feed until the approach of cold weather. There is one generation per year. Chain-like leaf feeding damage by the adults is diagnostic and can alert growers to adult activity. Foliar sprays when adults are active can provide effective control. Grape Flea Beetle Grape flea beetle is found in the eastern two-thirds of the United states.
Adults eat buds and unfolding leaves, causing leaves to be ragged and tattered.
Larvae feed on flower clusters and skeletonize leaves in a manner similar to adult rootworm feeding. Adults overwinter in protected areas around vineyards, and start feeding on interior of primary buds and opening grape leaves in early spring. Damaged buds will not develop into primary canes which can reduce yields. The females lay eggs under loose cane bark on vines, or occasionally on leaf upper surfaces, or on buds. The light yellow fairly conspicuous eggs hatch in a few days.