Macrolepidoptera and Their Parasites Reared from Field Collections in the Northeastern Part of the United States

This publication is the result of studies begun in 1915 at the Melrose Highlands, Mass., laboratory of the Bureau of Entomology to determine the native hosts of the introduced parasites of the gypsy moth (Porthetria dispar L.) and the brown-tail moth (Nygmia phaeorrhoea Don.), and to determine the possible effect of these parasites on the native hosts.