Population dynamics of Erythroneura ziczac in Californian vineyards

Virginia creeper leafhopper (Erythroneura ziczac) is a non-native phytophagous pest of grapevines in California. Limited information is known regarding Virginia creeper leafhopper biology in Californian vineyards. The population dynamics of E. ziczac was documented by weekly sampling of eggs, nymphs, and adults in untreated blocks of Cabernet Sauvignon and Syrah over two consecutive grape-growing seasons. Results indicate that Virginia creeper leafhopper attains a higher population density earlier in the season than the other two established leafhopper species commonly found in Californian vineyards. This information can be used to optimize sampling procedures and timing control measures for the Erythroneura leafhopper complex in grape vineyards.