Anadasmus lithogypsa is a moth in the Depressariidae family. It was described by Meyrick in 1932. It is found in Brazil. The wingspan is about 18 mm. The forewings are whitish with the plical and second discal stigmata blackish. There is an excurved subterminal series of indistinct dark grey dots connected by faint greyish suffusion, indented towards the costa. There is also a marginal series of blackish dots around the apex and termen. The hindwings are whitish.