Crambus praefectellus is a small moth belonging to the family Crambidae. It has a wingspan of about 15-20 mm and is commonly found in grassy habitats across North America. The adult moth has a pale brown coloration with intricate patterns on its wings, while the larvae feed on grasses and other herbaceous plants. This species is known for its ability to blend in with its surroundings, making it difficult to spot in the wild.