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Description

 Chaetozone setosa has a relatively thin cylindrical body that narrows posteriorly. The overall body length is 20-25 mm with 70-90 segments (chaetigers). The head bears a pointed, eyeless prostromium with two extremely long, wrinkled fragile palps on the first segment. Typically grey, brownish or bluish-black in colour. Long finger-like gills are present along the initial half of the body from the first segment. At the posterior end of the body, stout pointed chaetea form transverse series latterally. Toward the end of the body the chaetae increase in number and almost encircle the entire segment.This species is a sedentary worm feeding on detritus using its long, wrinkled fragile palps.  There are several species confused under this name in UK waters (Howson & Picton, 1997).

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©  The Marine Biological Association of the United Kingdom

Source: Marine Life Information Network

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