FIGURE 4. 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 4. Idanthyrsus mikeli n. sp. (ECOSUR-252). A, Outer palea. B, Basal region of the outer palea. C, Inner palea. D, Notochaetae parathoracic. E, Neurochaetae parathoracic. F, Abdominal chaetae. G, Abdominal uncini. H–I, Opercular paleae and nuchal hook of one paratype (ECOSUR-253). Scale bars: A, C–D, F, H–J: 100 µm; B: 20 µm; E: 50 µm; G: 5 µm. Abbreviation: Li, limbation.