Petrophila canadensis, commonly known as the Canadian Petrophila, is a species of moth belonging to the family Crambidae. This insect is primarily found in Canada, particularly in rocky habitats such as cliffs and boulder fields. The adult moth has a wingspan of about 2-3 centimeters and displays a distinctive pattern of brown and white markings, allowing it to blend in with its rocky surroundings. Its larvae feed on lichens and mosses, making it an important species in maintaining the ecological balance of these habitats.