Adults chew holes in the leaves of many plant species and may sometimes be found in vineyards. They do not harm the berries. Their abundance could depend on proximity of corn fields and other sources of food. Their peak numbers usually occur in the middle of August. Nymph Adult Damage Nymphs are approx.
Adults are approx.
2-3 mm long. Leaf with discolored spots due to feeding by leafhoppers. Life cycle Adults emerge from their hibernation sites beneath leaf litter or debris in the spring and feed on plants like wild strawberries or wild vines until budburst of cultivated vines. They will then feed on cultivated vines and females will lay their eggs within the leaf tissue. Nymphs and adults can be found until the end of October.