Butterfly Sulphur Family -- ID Help Needed
Shot was taken at a Butterfly Conservatory, not in the wild.

Have looked at many images of the Sulphur Family butterflies
and I know what this is not in many cases, but I cannot
arrive at a positive conclusion. I did not get a look at
the top of the wings at all. What has me confused is the large
brown coloration at the Apex* of the forewing.

*Ref: http://www.answers.com/topic/glossary-of-lepidopteran-terms


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