A New Species of the Genus Djakonov (Echinodermata: Ophiuroidea: Amphilepididae) from the Deep-Sea of Japan.

A new species, , is described based on five specimens collected from deep water settings, southeast of Cape Erimo, Hokkaido, Japan. sp. n. is distinguished from other congeners based on the following characters: elongate semi-circular and separated radial shields; triangular oral shields; flat and broad tentacle scales on the second tentacle pore; octagonal dorsal arm plates, approximately three times wider than long on proximal portion of the arm; and three arm spines present proximally on the arm. This is the first record of the genus from Japanese waters. The nucleotide sequence for sp. n. is provided.