An investigation was conducted to determine qualitatively the entomophagous natural enemies ofPortlzetria dispar(L.) in Pennsylvania. Seven exotic species were recovered: the larval parasitoidsBleplzaripa scutellata(Robineau-Desvoidy) (Tachinidae),Compsilura concinnata(Meigen) (Tachinidae),Phobocampe disparis(Viereck) (lchneumonidae), andApanteles melanosceilis(Ratzeburg) (Braconidae); a pupal parasitoid,Brachymeria intermedia(Nees) (Chalcidiae), andOoencyrtus kuwanai(Howard) (Encyrtidae), an egg parasitoid. The predatorCalosoma sycophantaL. (Carabidae) was observed feeding on gypsy moth in one county. Two native ichneumonid parasitoids were recovered in the State,Theronia atalantae fulvescens(Cresson) andItoplectis conquisitor(Say). ACalosomabeetle and two species of Pentatomidae were observed feeding on the gypsy moth in the field.