Spiochaetopterus creoceanae. A. Anterior end drawn from SEM picture (the A4 specialized setae may be seen in apical view), including a frontal view of prostomium (pr) with the two eyespots and peristomium (pe) and a dorsal view of tentacles (t). B. Notopodia of region-C. C–D. Specialized A4 seta in ventral (C) and dorsal (D) views. E–F. Uncinal plates of segment B1. Scale bars: A = 1 mm; B = 30 µm; C, D = 50µm; E, F = 8.5µm.