Izatha metadelta is a moth of the Oecophoridae family. It is endemic to New Zealand, where it is known from the North Island only, where it is rare north of Waikato and the Bay of Plenty. The wingspan is 15–18.5 mm for males and 19–25.5 mm for females. Adults have been recorded in December, January and February. Larvae have been reared from the under bark of dead Aristotelia serrata, from a rather dry, soft fallen branch of Hedycarya arborea and from unspecified damp, rotten wood on the ground.