Torolf R. Torgersen

• Identification of parasites of the Douglas-fir tussock moth, based on adults, cocoons, and puparia
• Save our birds, save our forests
• The occurrence of the hemlock looper (Lambdina fiscellaria (Guenee)) (Lepidoptera: Geometridae) in southeast Alaska, with notes on its biology
• Douglas-fir tussock moth handbook
• Parasite records for the Douglas-fir tussock moth
• The occurrence of the hemlock looper (Lambdina fiscellaria (Guenée)) (Lepidoptera: Geometriadae) in southeast Alaska, with notes on its biology