Grasping spine A abruptly curved hooks (Krohnitta subtilis, Krohnittidae) B gently curved and not serrated hooks (Ferosagitta robusta, Sagittidae) C gently curved and serrated hooks (Serratosagitta pacifica, Sagittidae).

 
 
  Part of: Choo S, Jeong M-K, Soh HY (2022) Taxonomic reassessment of chaetognaths (Chaetognatha, Sagittoidea, Aphragmophora) from Korean waters. ZooKeys 1106: 165-211. https://doi.org/10.3897/zookeys.1106.80184