Agathiphaga vitiensis, or the Fiji kauri moth, is a moth of the Agathiphagidae family. It is found from Fiji to Vanuatu and Solomon Islands. The length of the forewings is about 4 mm. The forewings are long, dorsally dark greyish-brown with fine white hairs, a light yellowish-brown patch on the anal area and a smaller patch of similar colour on the posterior margin. The larvae feed on Agathis vitiensis. The full-grown larva is about 6 mm long and 2.5 mm wide. It is stoutly built and not flattened. They are yellowish in colour.