Adelpha serpa, the Celerio Sister, is a butterfly of the Nymphalidae family. It was described by Boisduval in 1836. It is found from Mexico to Brazil. The habitat consists of rainforests and cloudforests at elevations ranging from 300 to 2,000 meters. The butterfly is 50–55 mm. Larvae have been recorded feeding on Miconia multispicata, Conostegia subcrustulata, Sabicea species and Warszewiczia coccinea.