FIGURE 1. Idanthyrsus bastidai n in Sabellariids (Annelida: Sedentaria: Sabellariidae) from shallow waters of the Gulf of Mexico and the Caribbean Sea, including three new species

FIGURE 1. Idanthyrsus bastidai n. sp. (ECOSUR-250). A, Holotype complete specimen. B, Anterior region, dorsal view. C, Anterior region, lateral view. D, Thorax and parathorax, lateral view. E, Opercular peduncle, ventral view. F, Abdominal region, ventral view. Scale bars: A–C: 1 mm, D–F: 0.5 mm. Abbreviations: ab8, abdominal neuropodia segment 8; bo, building organ; cn1, cirrus neuropodia segment 1; ll2, lateral lamellae segment 2; mo, median organ; mr, median ridge; ne, parathoracic neuropodia; no, parathoracic notopodia; tf, tentacular filaments.