Daggerwings are similar in wing shape to Swordtails and Swallowtails (Papilionidae), but Papilionidae have 6 legs whereas Marpesia and all other Nymphalidae genera have only 4 legs. 
Another feature to look for is the antennae.
In all Papilionidae species these are recurved at the tip, but in Marpesia they are straight.

Banabeki B&B area, Republiek, Suriname, 12 October 2016