Porthecla johanna is a butterfly in the family Lycaenidae. It is found in Peru and Ecuador in wet lowland forests at altitudes between 400 and 600 meters.
The length of the forewings is 15.5 mm for males., 2011: Species level taxonomy of the Neotropical hairstreak genus Porthecla (Lepidoptera: Lycaenidae: Theclinae: Eumaeini). Annales de la Société Entomologique de France (n.s.), 47(1-2): 241-259 Adults are on wing year-round.
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