Chlamydastis chionosphena is a moth in the Depressariidae family. It was described by Meyrick in 1931. It is found in French Guiana. The wingspan is about 17 mm. The forewings are brown, slightly reddish-tinged and with an elongate-triangular snow-while patch extending along the costa (with the apex anterior) from the base to five-sixths, reaching nearly half across the wing, the posterior side oblique from the end of the cell to the costa. The hindwings are light grey.