Queen Alexandra’s Sulphur butterfly collects nectar from a purple aster flower in the Behind the Rocks Wilderness Study Area on Sunday, Sept. 14.The Queen Alexandra’s Sulphur, or Ultraviolet Sulfur (Colias alexandra) is a butterfly in the family Pieridae found in western North America. Its range extends from Alaska to New Mexico. [Photo by Mike Newbold / Moab Sun News]
