Consult the label for dosage rates and safety precautions. Potato leafhopper, Empoasca fabae . Leafhoppers will feed on the new growth of wisteria. This insect is a serious pest in some years in Connecticut. It does not overwinter here, and the severity of infestation depends on the size of the migrating population and the weather.
Nymphs are similar in color but have no wings.
Both adults and nymphs are difficult to see because they move rapidly. Adults and nymphs may infest and cause injury by sucking sap from the bottom side of leaves. This causes the young leaves to curl or gives them a white peppered appearance. Among the compounds registered for control of this pest in Connecticut are pyrethrum, carbaryl and insecticidal soap. Repeated use of insecticides other than soap, may lead to outbreaks of aphids.