Prepalla austrina is a moth of the family Oecophoridae.

Meyrick later moved the species into the genus Oxythecta.

However in 1997 its taxonomy was reconsidered by Ian Francis Bell Common and the species was included in the genus Prepalla.

[4] The host plant for this moth is Leucopogon fraseri.

This article on a moth of the family Oecophoridae is a stub.