FIGURE 3. Idanthyrsus mikeli n in Sabellariids (Annelida: Sedentaria: Sabellariidae) from shallow waters of the Gulf of Mexico and the Caribbean Sea, including three new species

FIGURE 3. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Holotype complete specimen, lateral view. B, Anterior region, ventral view. C, Anterior region, dorsal view. D, Median ridge and median organ, ventral view. E, Parathoracic region, lateral view. F, Abdomen, ventral view. Scale bars: A–C: 1 mm; D–F: 0.5 mm. Abbreviations: ab8, abdominal neuropodia segment 8; bo, building organ; ca, cauda; mo, median organ; mr, median ridge; ne, parathoracic neuropodia; no, parathoracic notopodia; pa, palps; tf, tentacular filaments.