Simple body plan, resembles clitellate. Body translucent, skin with black-brown spotsreddish-brown intestine visible. Nuchal organs visible as large ciliated pits lateral on prostomium. Noto- and neurochaetae identical, slightly bent and broadened distally, 4 – 7 teeth.
1.5 – 2.2 mm
Intertidal, sediment (often in aquaria). In South Africa on oysters from on-shore pond culture.
South Africa: northwest coast
English Channel, North Sea (Type locality France), Mediterranean, Japan, New Zealand, Caribbean, Baja California.
Amphi-Atlantic distribution confirmed. Too few individuals found in SA to confirm identity.