Clepsicosma is a genus of moths of the Crambidae family. It contains only one species, Clepsicosma iridia, which is found in New Zealand. The wingspan is about 25 mm. The forewings are whitish-ochreous, sprinkled with brownish-ochreous, towards the middle of the inner margin suffused with whitish. There is a streak along the basal third of the costa, which is irrorated with blackish-fuscous. The hindwings are white, towards the costa slightly ochreous-tinged.