Diathrausta ochreipennis is a moth in the Crambidae family. It was described by Butler in 1886. It is found in Australia, where it has been recorded from Queensland and New South Wales. The habitat consists of schlerophyll forests. The wingspan is about 20 mm. The forewings of the females are black with white spots. There are yellow spots on the hindwings. Males are similar, but have white spots on the hindwings.