Chaetopterus izuensis is a species of parchment worm, a marine polychaete in the family Chaetopteridae.
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Description Chaetopterus izuensis is characterized by its lack of eyes, a small peristomium, a narrow, wing-like notopodium on the first chaetiger of the middle region, and long, straight posterior region notopodia with a knob-like tip. It resides in epibiotic, sand-formed tubes.
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