Neographium agesilaus
Uncommon up to 1500 m., probably mostly in lowlands. Usually found puddling. I'm not sure which subspecies occur(s) in Cusco; the individual shown from San Martin could be a different subspecies.
Similar species: Several Protesilaus species (I have no Cusco records of any, though some are expected in lowlands) are superficially similar, but none has such extensive black on FW apex and margin.
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