Evans planted several varieties of "Vitis labrusca" there. It is thought to be a hybrid between "Vitis vinifera" and "Vitis labrusca". Jessica is a cross of a selection of "Vitis labrusca" by "Vitis aestivalis". Charles Valentine Riley noted that the American species "Vitis labrusca" was resistant to Phylloxera. Native American grapevines include varieties such as "Vitis labrusca", which is resistant to the bug. Concord grapes and other "Vitis labrusca" grapes are grown in the region as well. Noah, its other parent, is itself a cross of "Vitis labrusca" and "Vitis riparia". This promoted another indigenous agricultural item of the American Colonies, the "Vitis labrusca" grapes. Eighty-three percent of New York's grape area is "Vitis labrusca" varieties (mostly Concord). This trait gives "Vitis labrusca" the name of "slip skin" grapes. The larvae feed on "Vitis aestivalis", "Vitis labrusca" and "Vitis riparia".