Filodes xanthalis is a moth in the Crambidae family. It was described by Hampson in 1898. It is found in New Guinea (Papua New Guinea, D'Entrecasteaux Islands, Trobriand Islands). The wingspan is about 40 mm. The forewings are orange-yellow with a fuscous costal area. The terminal area is fuscous from two-thirds of the costa to the inner margin near the tornus. The hindwings have a terminal fuscous line.