With a wingspan of up to 4 inches, the Great Spangled is one of our larger Greater Fritillaries (genus Speyeria) in MT. They are the most common fritillary in the east, but can be found here in the west too (absent or rare in the southern states). They prefer open, moist habitats (fields, prairies, open woodlands, etc.). The larvae feed on violets. Photo by Rachel Johnson on 8/26/19 in Missoula, MT.