This is a CLEO butterfly on a Rudbeckia flower in VIS and simulated tetrachromatic butterfly vision (UV+VIS).
[click on image to see a larger one]
This is the visual image (VIS):
And here now the simulated tetrachromatic vision image using (XBV2 Filter):
Stay tuned, more will follow on that fascinating subject...
More info on this very interesting field may be found on my site http://www.pbase.com/kds315/uv_photos