This beautiful butterfly, commonly known as Sunset Daggerwing, is scientifically named Marpesia furcula violetta (Nymphalidae).
Daggerwings are similar in wing shape to Swordtails and Swallowtails (Papilionidae), but the latter have 6 legs whereas Marpesia and all other Nymphalidae genera have only 4 legs.
The distribution of this subspecies is restricted to Western Ecuador (Chimbo).
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Photo credit: ©Andreas Kay