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Calephelis schausi
this little guy is about the size of a quarter.
tropical dry forest of NW Costa Rica 7 weeks into the six month dry season
Welcome! You obviously trust my ID, I think it fits quite well, but with the tricky Calephelis I am not 100% sure about Schausi (only 95%;-)...).
My guess would be Calephelis schausi:
http://www.neotropicalbutterflies.com/Si...
http://butterfliesofamerica.com/calephel...
But you know it is not really serious to ID closer than the genus in Calophelis. Many of them were even identified in the 70's of the last century.