DESCRIPTION OF A NEW SPECIES OF ARICHLIDON (CHRYSOPETALIDAE: POLYCHAETA) FROM THE WEST ATLANTIC AND COMPARISON WITH THE EAST ATLANTIC SPECIES ARICHLIDON REYSSI
Watson Russell, C.
Division of Natural Sciences, Northern Territory Museum, GPO Box 4646 Darwin, NT 0801, Australia
A new species of Arichlidon, comprising a cline of four closely related forms, based on differences in the shape of the paleae, from four geographical locations down the West Atlantic coast of the Americas, is described. This species is compared with the morphologically similar species Arichlidon reyssi (Katzman, Laubier and Ramos) recorded from the East Atlantic coast and the Mediterranean. Larval and post larval forms are described and a key to the two species is provided.