Lysippe labiata can be up to 33 mm long. It can be found in the Barents Sea, around Svalbard and northern Norwegian coast possible as far south as Møre at depths between 14 and 400 meters.

Type locality

Spitsbergen, Svalbard (Haklyts Headland (Hakluytodden?), Kingsbay (Kongsfjorden?), Safehavn (Trygghavna?) and Storfjorden), 50–90 m.

Key characters

Lysippe labiata. Anterior end. br: branchiae (branchial scars), lwl: lower lip, pr: prostomium.

Measurements: Up to 33 mm long.

Number of thoracic chaetigers, excluding paleae: 16

Number of thoracic uncinigers: 13

Number of abdominal uncinigers: 14–15.

Prostomium: Trilobed; one pair of eyespots.

Mouth tentacles: Smooth.

Branchiae: Four pairs of branchiae in two groups slightly separated at mid-dorsum; branchiae in each group in transverse row.

Paleae: Small with filiform tips.

Special features: Very large lower lip.

Pygidium: With two lateral cirri.

Tube: Thin layer of organic secretion incrusted with few sand grains.

Distribution

Barents Sea, Svalbard, northern Norwegian coast, possible as far south as Møre; 14–395 m (Jirkov 2001).

Similar species

The very large lower lip, in combination with presence of paleae and long abdomen (14–15 uncinigers), makes it unlikely to confuse adult complete specimens of Lysippe labiata with any other Ampharetidae in Norwegian waters.

Sources

Holthe T (1986a). Polychaeta Terebellomorpha. Marine Invertebrates of Scandinavia 7: 1-192.

Jirkov IA (2001). [Polychaeta of the Arctic Ocean] (In Russian). Polikhety severnogo Ledovitogo Okeana. Yanus-K Press. Moscow, 632 pp.

Malmgren AJ (1866). Nordiska Hafs-Annulater. [part three of three]. Öfversigt af Königlich Vetenskapsakademiens förhandlingar, Stockholm 22(5): 355-410, plates XVIII-XXIX. https://biodiversitylibrary.org/page/32339631

Personal observations, Alvestad T.