Idanthyrsus mexicanus Kirtley, 1994. A) Entire body, dorso-lateral view, B) operculum, dorsal view, C) nuchal hook, D) abdominal uncini, lateral view, E) base of outer opercular palea, F) mid-region of a outer opercular paleae, G) near distal end of outer opercular palea, H–J) inner opercular paleae. Scale bars: A) 3 mm, B) 1.5 mm, C, J) 400x magnification, D–I) 1000x magnification.

 
  Part of: Yáñez-Rivera B, Tovar-Hernández MA, Galván-Villa CM, Ríos-Jara E (2020) Tubicolous polychaete worms (Annelida) from Bahía de Chamela Islands Sanctuary, Mexico, with the description of a new bamboo worm. Biodiversity Data Journal 8: e57572. https://doi.org/10.3897/BDJ.8.e57572