Hydroptila Dalman and Orthotrichia Eaton (Trichoptera: Hydroptilidae) from the islands of New Guinea and New Britain, with Observations on Relationships.

Abstract

Nine new species of Hydroptila and fourteen of Orthotrichia are described from the islands of New Guinea and New Britain. and new records are given from this region for three previously known species, Hydroptila bispina Kimmins (New Guinea), H. triloba Kimmins (Guadalcanal I.) and H. incertula Mosely (north-eastern Australia). Keys to adult males of all New Guinea species in the two genera are provided and relationships of species are discussed.