The Occurence of Paralabidocera antarctica (I. C. Thomson) (Copepoda : Calanoida : Acartiidae) in an Antarctic Saline Lake

Abstract

The systematic position and phylogenetic derivation of Paralabidocera is discussed. The female urosome and most of the appendages of a lacustrine form of P. antarctica are figured, as are the female urosome and male fifth legs of the paratypes of a synonym (P. hodgsoni Wolfenden). The significance of the tolerance of a broad range of salinities by P. antarctica for concepts of evolution of euryhalinity within the Acartiidae is pointed out.