About Acronicta grisea Walker, 1856
Acronicta grisea, commonly known as the gray dagger, is a moth species that belongs to the Noctuidae family. This species was first formally described by Francis Walker in 1856. It is distributed across southern Canada and the northern United States, ranging from the Atlantic coast to the Pacific coast. The wingspan of adult gray dagger moths measures between 30 and 40 mm. Adults of this species are active during flight in midsummer.