Prionapteryx hedyscopa is a moth in the Crambidae family. It was described by Lower in 1905. It is found in Australia, where it has been recorded from New South Wales. The wingspan is 18–24 mm. The forewings are ochreous, somewhat irrorated with ferruginous and fuscous. The hindwings are fuscous grey, paler and becoming grey on the basal half. Adults have been recorded on wing in February.