ZooBank:EB25511F-E456-42C0-A6E4-CEEE976730DF.
Descrizione originale come Xiphophorus variatus evelynae:
Rosen, Donn E. 1960. "Middle-American poeciliid fishes of the genus Xiphophorus". Bulletin of the Florida State Museum, Biological Sciences. 5(4):57-242 - [riassunto] · (ffm00047)