Acronicta americana, commonly known as the American dagger moth, is a species of moth belonging to the family Noctuidae. It is found in North America, particularly in the eastern and central regions. The adult moth has a wingspan of about 4-5 centimeters and is characterized by its black and white coloration, with distinctive dagger-like markings on its forewings. The caterpillar of Acronicta americana is covered in dense black spines and is known to feed on a variety of deciduous trees.