Chaetozone setosa A ZMBN125817, SEM of anterior end in lateral view B ZMBN125768, SEM of anterior neuropodia in lateral view C ZMBN125817, SEM of nuchal organ, specimen D SEM of posterior cinctures in lateral view, specimen ZMBN125817 E ZMBN125817, SEM of neuropodial spine F ZMBN129637, SEM of anterior end in dorsal view. Abbreviations: br, branchiae; Ch, chaetiger; dCr, dorsal crest; dT, dorsal tentacle; per, peristomium; pr, prostomium; Seg, segment.