Revision of the New Caledonian Hydrobiosella (Trichoptera: Philopotamidae) with description of five new species
The philopotamid genus Hydrobiosella is exclusively South-Pacific in distribution and restricted to Australia (20 species), New Zealand (4 species) and New Caledonia (6 species). The first species known from New Caledonia, Hydrobiosella uncinata Kimmins, 1953, was described from a single male collected in Puébo in 1949. In a recently collected material from New Caledonia H. uncinata together with five undescribed species were present. The genitalia of the H. uncinata holotype are re-described and the new species are described. Distribution maps and a key to the males are presented for all New Caledonian species.