The Subfamily Entocytherinae, a New Subfamily of Fresh-Water Cytherid Ostracoda, with Descriptions of Two New Species of the Genus Entocythere

Abstract

While making an ecological and taxonomic study of the ostracods of Illinois, the writer found the crayfishes of east central Illinois to be hosts of two species of Entocythere, both of which are new. Little attention has been given this group of ostracods although Marshall described the genotype, Entocy there cambar?a, as early as 1903. The only other species originally described as belonging to this genus are E. donnaldsonensis Klie 1931 and E. Columbia Dobbin 1941. In addition Sars (1926), however, published the description of an Entocythere species from Canada under the designation, Cytherites insignipes. Since the American genus Entocythere Marshall 1903 and the Continental European genus Sphaeromicola Paris 1916 form a natural group, the writer proposes herein to include these two genera in the subfamily Entocytherinae of the family Cytheridae. The writer wishes to thank Prof. H. J. Van Cleave for his kind advice during the course of the investigation and for his careful reading of the manuscript. Method