The species of Erythroneura include the grape, three-banded, variegated, and potato leafhoppers, and these may feed on a wide variety of ornamental trees and shrubs in addition to their named host plants. When attacking crop plants such as grapes in large numbers the feeding causes premature leaf drop and poor quality to the fruit. Continuing annual infestations ultimately affect the overall health of the entire plant. Adult insects over-winter and emerge in the spring to deposit eggs within the tissue of the leaf. There may be 2 generations per year.
Insecticide applications should be targeted to the underside of the leaves, as this is where the insects are feeding. Plants can usually tolerate small numbers of the insects.