Dodecaceria concharum Örsted, 1843

Synonyms:
Dodecaceria concharum Oersted, 1843
Heterocirrus fimbriatus Verrill,1880
Zeppelina monostyla Fauvel, 1927
Dodecaceria caulleryi Dehorne, 1933
Zeppelina mediopigmentata Gillandt, 1979

Distinguishing characteristics
1 pair of palps and 4-8 pairs of long filamentous branchiae behind the palps.
Hooks with tips hollowed-out like spoons.

Species description
Body cylindrical, becoming flattened and broader posteriorly. Eyes absent. Peristomium achaetous, partially divided into 3 annuli. One pair of palps on the last achaetous segment. 4-8 pairs of long filamentous branchiae, starting just behind the palps. In the first 6 or 7 chaetigers capillary chaetae only but in following both stout and finer hooks with tips hollowed-out like spoons.

Size
Up to 60 mm for 80 segments.

Color
Brownish or blackish green.

Habitat
Eulittoral to 400 m.

Mobility

Feeding
Deposit feeder.
Facultative suspension feeder.

Life cycle

Distribution
Whole North Sea, Skagerrak, Kattegat to Öresund, Atlantic to Mediterranean, North Pacific.