Notarcha quaternalis is a species of moth in the family Crambidae. It can be found throughout Sub-Saharan 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)