Ethmia scylla is a moth in the Depressariidae family. It is in California, United States. The length of the forewings is 5.8-7.2 mm. The ground color of the forewings is pale grayish brown, clouded and marked by whitish scaling. The ground color of the hindwings is gray-brown. Adults are on wing from late February to early April. The larvae feed on Collinsia heterophylla. They feed in the flowers of their host plant.