Exotic butterfly in Derby - what is it?

[Bill Grange]

An enquirer has reported to me what is obviously a sighting of an escaped
exotic butterfly in Derby, England, this month.  He did a basic colour
sketch, but I have been unable to find a species which even resembles it.

Can anyone help with a possible identification? Picture and more information
is at webpage:

http://www.elmgrove2.freeserve.co.uk/index-page6.html

Bill Grange




 
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