Tirathaba nitidalis is a species of moth of the family Pyralidae.[1] [2] It was described by George Hampson in 1917. It is found in New Guinea.[3] [4]
The wingspan is about 18 mm. The forewings are silvery white, with the costal edge black towards the base and with a diffused purplish-fuscous subterminal line, slightly excurved at the middle, the area beyond it faintly tinged with purplish fuscous. The hindwings are silvery white, the inner area slightly tinged with brown.[5]