Some diagnostic characters of copepodid stages of the cyclopoid copepod Cyclopina schneideri T. Scott and adults of arctic marine Cyclopinidae

Abstract

Copepodid stages I–V of the arctic marine cyclopoid copepod Cyclopina schneideri T. Scott are partly described and illustrated with emphasis on diagnostic characters. Additional morphological information is given on adults of both sexes, the only stages of the species previously portrayed. Diagnostic characters of adults are included for Cyclopina gracilis Claus, Arctocylopina pagonasta Mohammed and Neuhof, Cyclopinoides longicornis (Boeck), and Cyclopinodes elegans (T. Scott), the other species of the family Cyclopinidae reported to occur in marine waters of the Canadian Arctic.