wingspan : 26 mm
this butterfly, collected at Pimpilala, looks just like the Mesosemia ephyne described from the Guyanas and illustrated in J-Y. Gallard's "les Riodinidae de Guyane - 2017" ; but we do not know if this species has been reported from Ecuador ?
and now this butterfly has been pictured by Karen Nichols, and at Pimpilala again and, at rio Pingullo, by Steven Cary..