Dahira uljanae is a moth of the Sphingidae family which is endemic to China. The length of the forewings is about 28 millimetres (1.1 in). It is similar to Dahira taiwana but the forewings are longer. The forewing upperside has a pale grey area between the antemedian and postmedian bands and a pale grey wavy submarginal band running from the apex. The ground colour of the hindwing upperside is yellowish-orange with a brown marginal band.