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I believe the White Ermine does come in a buff form. I did consider the Buff Ermine but there seems too many large black spots near the head end of the wings for this species.
Chris Brooks - www.dragonfly-images.co.uk
My Flickr site - www.flickr.com/photos/ceb1298
Lat/Lng: 55.2427, -1.6231
OS grid ref: NZ240943