While birding today, Judy and I watched a two-toned butterfly for awhile at Pte. Mouillee in Michigan. We thought it quite unusual! Fortunately it "posed" for us. This pic possibly shows a yellow butterfly mating with a mostly identical silver butterfly. I mean it really looks totally identical relative to placements of spots, etc.!
Or is this just a "shed"? How (why?) could/would a butterfly ever shed all that fragile glory - especially intact! - to just to remain the same? And how is it possible that a butterfly would ever shed the whole thing without ripping it?