Ethmia sphaerosticha is a moth in the Depressariidae family. It is found in eastern Australia, including New South Wales and Queensland. The wingspan is about 20 mm. The forewings are white with a pattern of black dots. The hindwings are grey, fading to white at the base. The larvae feed on the foliage of Ehretia acuminata. They live in a silken web constructed under a leaf. They are hairless. Pupation occurs in a crevice on the trunk or a branch of the host plant.