Large Marble (Euchloe ausonides):  Many butterflies may simply appear “white” in color as they fly by, but if you happen to catch one perched to sip nectar for a few seconds, you’ll notice some incredible differences. The Large Marble can be found flying from May to early July, and frequents open forested areas, particularly around pines (stream margins, hillsides, meadows, forest paths, and farmland). It is a medium sized butterfly with a wingspan up to 2 inches and can be found primarily in western North America from Alaska and the Yukon to California and Northern New Mexico. The larvae feed on a wide variety of members of the mustard family. Photo by Glenn Marangelo on 5/13/18 in Missoula, MT.