Pest Management Fact Sheet #5024 James F. Dill, Pest Management Specialist Clay A. Kirby, Insect Diagnostician Charles D. Armstrong, Cranberry Professional & Staff Entomologist For information about UMaine Extension programs and resources, visit extension.umaine.edu. Find more of our publications and books at extension.umaine.edu/publications/. Description & Biology Spongy moth (Lymantria dispar) caterpillars feed on