Scirpophaga xantharrenes is a moth in the Crambidae family. It was described by Common in 1960. It is found in Australia, where it has been recorded from Queensland.
The wingspan is 27–28 mm for males and about 34 mm for females. The forewings of the males are light orange-yellow with a fuscous costa. The hindwings are white. The forewings of the females are white, tinged with fuscous on the costa. The hindwings are white, with an orange-yellow anal tuft.