The Grapevine Epimenis certainly looks like a small butterfly (wingspread about an inch), and it is a daytime flyer in woodlands and edges in the eastern half of the U.S. and into Ontario. Adults nectar on the flowers of a few early-blooming fruit trees like cherries and plums and on sumac, and they like redbud. Grape Leaf Folders get their name from the habit of their caterpillars of folding grape (and Virginia creeper, redbud, and some evening primrose) leaves and webbing them shut. They can become pests in vineyards—high infestations damage leaves, which may lower production, damage fruits, and affect the next crop.