Illinois Butterfly Monitoring Network

Orange Sulphur-Alfalfa Sulphur (Colias eurytheme)

The Clouded Sulphur (Colias philodice) and Orange Sulphur, or Alfalfa, (Colias eurytheme) are often difficult to distinguish. But the Orange Sulphur generally has some orange in the wing color, while Clouded is purely yellow.

Click on a picture to see a larger image.

Orange Sulphur-Alfalfa Sulphur Orange Sulphur-Alfalfa Sulphur Orange Sulphur-Alfalfa Sulphur Orange Sulphur-Alfalfa Sulphur

Return to Top 25 Butterflies Gallery
Return to main galleries page