Margined White
Pieris marginalis
The Margined White (Pieris marginalis) is a member of a group of butterflies known collectively as the "Mustard White Complex". The Margined White is common in the Rocky Mountain areas of the western U.S. and Canada from parts of Alaska all the way south to southern New Mexico. The first shot on this page was taken at Boreas Pass, near Breckenridge, Summit Co., Colorado, in July, 2008, at about 12,000 feet elevation. This shot was taken with a Canon EOS 1D Mark III and EF 300mm F/4 L IS lens and 2X extender and Canon 580 flash.