The anatomy and taxonomy ofAmorphonemertes kubergensisgen. et sp. nov. (Nemertini) from the Tromsø area (Norway)

Abstract

Abstract The anatomy and taxonomy of a new heteronemertine, Amorphonemertes kubergensis are described and illustrated. The species is characterized by, inter alia, a thick paleonemertine-like basement membrane, a proboscis with four nerves and three muscle layers with single and groups of longitudinal muscle fibres in the outer longitudinal muscle layer, well developed subepidermal circular muscle fibres in the posterior brain and mouth regions and well-developed longitudinal muscle fibres (horizontal muscle plate) dorsal to the foregut. The material was collected in the Tromsø area (Norway).