Schematic drawings of Hydroides dirampha chaetiger morphology as adapted from (Bastida-Zavala & ten Hove, 2002). (A) thoracic chaetae, (B) thoracic uncini, (C) abdominal trumpeted chaetae, (D) abdominal uncini, (E) collar bayonet chaetae. Image Credit: Amelia Desbiens 2018.