Though this one does not have the violet color as my other sighting of this species did, I believe this is the correct ID and most of the others posted online do not have the violet color. Violet-frosted Skipper, Mnasicles geta, link to my gallery on this one. And like many others I’ve found here, I think that there should probably be multiple subspecies of this one with different colorations.
And link to all my Costa Rica Butterflies galleries.
¡Pura Vida!