Lange (1956) placed it in Nymphulinae. a subfamily known for its true aquatic caterpillars.
Samea multiplicalis (Guenee) (Crambidae: Spilomelinae) on Salvinia Seguier and Azolla Lam, (Knopf and Habeck 1976) and Parapoynx allionealis Walker (Crambidae: Nymphulinae) on Salvinia rotundifolia Willd.
1965, A new Undulambia species on leather-leaf fern in Florida, and note on a closely related Central American species (Lepidoptera: Pyraustidae, Nymphulinae).
A generic revision of the aquatic moths of North America (Lepidoptera: Pyralidae: Nymphulinae).