Thanks bayucca for the ID. You weren't kidding, there is a lot of variability between species. Kind of strange how this is one of the clearwings but the wings aren't that clear.
Nymphalidae, Danainae, Ithomiini, definitely Mechanitis sp. and most probably Mechanitis mazaeus, could be the subspecies Fallax from the link. The white patch on the apex of the forewing is quite large in yours, most of the time it is much smaller. But Mechanitis is quite a variable genus, so I am quite confident with Mechanitis mazaeus:
http://www.flickr.com/photos/83287919@N00/5002760780/in/photostream
The middle one from Ecuador: http://neotropicalbutterflies.com/Site%20Revision/Pages/Nymphalidae_Pages/Ithomiinae/Tith_Mel_Mech/Pages/Mechanitis_lysimnia_mazaeus.html
Note the greatvariability within the same species!
http://www.butterfliesofamerica.com/L/t/Mechanitis_mazaeus_a.htm
This was quite a tough one...
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