Eudonia submarginalis is a species of moth in the family Crambidae. It was described by Francis Walker in 1863. It is endemic to New Zealand. The larvae of this species feed on lichens, bryophytes and grasses. Adults of the species have been observed visiting the flowers of Leptospermum scoparium, Olearia virgata, Helichrysum intermedium and Dracophyllum acerosum likely feeding from and pollinating them. References Eudonia Moths of New Zealand Moths described in 1863 Endemic fauna of New Zealand Taxa named by Francis Walker (entomologist) Endemic moths of New Zealand