The wingspan is 12–23 mm (0.47–0.91 in). On average, it is slightly smaller than Epiblema scutulana and usually slightly darker on colour. The forewing has a bright spot at the dorsal edge, which tends to continue forward in the wing like a greyish cross band. There is also a round, light spot at the back corner and several white spots at the costal edge with a brown stripe in the middle. The hindwings are brown, paler at the base. Dissection of the genitalia is necessary to determine Endothenia species with certainty.
