Notarcha quaternalis is a species of moth of the Crambidae family. It can be found throughout subtropical Africa including many islands of the Indian Ocean. This moth is yellow/white with some black spots at the foreside of the forewings. Its wingspan is around 18mm. The larvae are dark green with a dark brown/black head.Hostplants of this species are Malvaceae (Sida sp., Sida carpinifolia)