Orange Sulphur, Colias eurytheme <LEP29>

This bright butterfly, common in summer over much of North America, has followed the spread of alfalfa. Hence it is often known as the Alfalfa Butterfly. The picture shows a female upper side, sunny orange with yellow-spotted black borders, black spot on forewing, and a red one on the hindwing. The males’s underside shows orange yellow with a row of brown dots and a silver spot. Drawing shows a pair on the flower of red clover.