Petaloproctus tenuis (Théel, 1879)

Synonyms:
Maldane tenuis Théel, 1879

Distinguishing characteristics
Head without cephalic plate, prostomium anteriorly broadly rounded.
Pygidium as an asymmetrical funnel, extending further ventrally then dorsally.
Funnel with a serrated margin.

Species description
Body long and cylindrical. Head without cephalic plate. Prostomium anteriorly broadly rounded, ocelli absent. 20 chaetigers. Notopodia bear capillary chaetae with feathery tips. Three first segments with 1 or 2 ventral spines, following segments with a row of hooks. One pre-pygidial achaetous segment. Anus terminal. Pygidium as an asymmetrical funnel, extending further ventrally then dorsally, without cirri. The funnel with a serrated margin.

Size 18 mm for 11 chaetigers.

Color

Habitat
In mud mixed with stones. From sublittoral down to about 1700 m deep.

Mobility
Sedentary.

Feeding
Surface deposit feeder.
Grazer.

Life cycle

Distribution
Shelf species, horizontal distribution uncertain.