Gypsy moth (Lymantria dispar L.) is an exotic insect that was introduced into the United States (Boston, MA) in 1869 from Europe as part of a silk-making experiment. Some larvae escaped and the moth spread throughout New England. Today the moth has migrated west and south to the Midwest (Ohio), the Lake states (Michigan and Wisconsin), the Mid-Atlantic states and through the southern Appalachians in Virginia and North Carolina.