Eleven out of twelve species of New Caledonian Helicopsyche described by H. H. Ross in 1975 were re-examined. Extended descriptions of the males include characters of the head, wing, leg and genitalia. The females of H. boularia, H. caledonia, H. edmundsi and H. hollowayi are described for the first time. Larvae of H. arenaria, H. boularia, H. caledonia, H. edmundsi, H. hollowayi, H. kariona and H. lapidaria are newly associated to species and described. Also the pupae of H. arenaria, H. caledonia, H. edmundsi, H. kariona, H. koumaca, H. lapidaria and H. starmuehlneri are described.