Laphania boecki Malmgren, 1866

Synonyms:
No synonyms.

Distinguishing characteristics
No branchiae.
Prominent dorsal ridge behind tentacles.
Uncini from the 7th chaetigerous segment.
Notochaetae on 17 segments.

Species description
Body long, thorax cylindrical, abdomen tapering. Tentacles numerous, thick, short. Upper lip narrow, rounded trapezoidal, prominent dorsal ridge behind tentacles. No eyespots and branchiae. 17 thoracic segments with capillary chaetae (from segment 3). Notochaetae smooth, 2 different lengths. Uncinigerous tori from segment 9. Tube – a thin, weak, light grey layer of secretion incrusted with sand grains and very small shell fragments.

Size
Up to 80 mm.

Color

Habitat
Mixed bottoms of mud with sand. 0-4667 m.

Mobility
Sedentary.

Feeding
Surface deposit feeder.
Facultative suspension feeder.

Life cycle

Distribution
East Greenland, Svalbard, Jan Mayen, Iceland, Barents Sea, the Faeroes, Shetland, Norwegian coast from Trondheimsfjorden to Finnmark, South Greenland, British Channel, Franz Josef’s Land, Novaya Zemlya, Bering Sea, Sea of Okhotsk, Japan Sea, British Columbia.