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Photo#115332
Margined White - Pieris marginalis

Margined White - Pieris marginalis
Thompson Falls, Sanders County, Montana, USA
May 31, 2007
A grey veined white butterfly.

Pieris marginalis
Is the main western segregate of the "Veined Whites" or the Pieris napi complex. I'm inclined to keep calling them all P. napi, and am not convinced that P. marginalis and P. oleracea are distinguishable except by geography. However, best to follow convention here for now.

Moved from Mustard White.

Moved
Thanks to you both for the help.

Mustard White (Pieris napi)
Believe this is correct.

Have you checked Mustard White?
Yours looks much like the one in Butterflies through Binoculars The West. The book does not list Arctic White. And neither species is listed for your county in butterfliesandmoths. Nothing they list looks like yours. Puzzling!

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