What's That Bug? does not endorse extermination

Pink-edged Sulphur butterfly?
I took this picture of what I think is a Pink-edged Sulphur. I never saw it with it’s wings open. So, I don’t know for sure if it is. Could it be a Common or Clouded Sulphur? I took this picture a couple of months in southern Indiana. I noticed that the Pick-edged Sulphur usually is found further north of this area. Can you tell by these photographs which one it is? Thanks,
Patrick Crone

Hi Patrick,
We actually believe this is an Orange Sulphur, Colias eurytheme, which has a white female form. There is a photo posted to BugGuide taken in Illinois in October that looks virtually identical to your photo. Sulphurs in the genus Colias are often difficult to distinguish from one another.

What's That Bug? does not endorse extermination
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