A New Species of the Copidognathus tricorneatus Group (Acari : Halacaridae) from Western Australia with a Review of this Species-group

Abstract

A new species, Copidognathus dictyotus, is described and illustrated. The species is the second Australian member of the tricorneatus species-group. Other records of this group are from the northeastern Pacific (Aleutians), western North Atlantic, Caribbean Sea, eastern North Atlantic, Mediterranean Sea and Black Sea. The species in this species-group are diagnosed and a key to all eight species is given.