Archaeoprepona demophon, the one-spotted prepona, is a butterfly belonging to the family Nymphalidae. The uppersides of the wings are black, with bright pale blue transverse bands. The undersides are pale brown with a clearer band in the middle of the hindwings and several dark small dots on the margins. Adults visit rotten fruit or dung. Archaeoprepona demophon prefers the edges of forest canopy and subcanopy.
From Wikipedia article at https://en.wikipedia.org/wiki/Archaeoprepona_demophon which is released under the Creative Commons Attribution-Share-Alike License 3.0.