Metathrinca ceromorpha is a moth in the Xyloryctidae family. It was described by Meyrick in 1923. It is found in India (Assam). The wingspan is about 25 mm. The forewings are light lilac-fuscous, with suffusion of pale ochreous irroration gradually increasing upwards, and with the costa pale ochreous. There is an indistinct cloudy fuscous pre-terminal line angulated opposite the apex. The hindwings are light grey.