Protorthodes curtica is a moth in the Noctuidae family. It is found from the interior of southern British Columbia southward in the West Coast states, mainly to the east of the Cascades and Coastal Ranges, to southern California. It occurs in the Rocky Mountains in Idaho and Montana and in the Ruby Mountains of Nevada. The habitat consists of dry forested areas. The larvae feed on various herbaceous plants, including Asteraceae (including Ericameria species), Scrophulariaceae and Rosaceae and species.