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Morpho epistrophus
Morpho epistrophus, White Morpho. There are 2 subspecies in Brazil. Morpho epistrophus catenaria and Morpho epistrophus epistrophus. Can't tell you which one...
http://www.butterfliesofamerica.com/L/mo...
http://www.butterfliesofamerica.com/L/mo...
But Morpho epistrophus is already a good match ;-)...