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Photo#718876
Yellowstone Butterfly - Colias eurytheme - male

Yellowstone Butterfly - Colias eurytheme - Male
Yellowstone National Park, Yellowstone County, Wyoming, USA
September 18, 2012
Size: 1 1/2"
Is this a Clouded Sulphur?

Moved
Moved from Colias.

Moved
Moved from ID Request.

could well be
Though I think more likely it is an 'Orange Sulphur' - Colias eurytheme. They both tend to be smaller and to have more "dusting" on the underside as the season cools off, but this one has more the "look" of the Orange to me, and it seems to have a fair amount of orange showing on the front wing.

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