Spinoncaea ivlevi (Shmeleva, 1966), male (northwestern equatorial Pacific) A habitus, dorsal (caudal seta V on left side missing) B maxilliped, posterior C maxilliped, anterior, syncoxa missing D urosome, dorsal (caudal seta IV on left side and seta V on right side missing, seta VII on left side omitted) E urosome, lateral F urosome, ventral (caudal seta IV on left side and seta V on right side missing, seta IV on right side and seta V on left side omitted) G antennule. Scale bars in μm.

 
 
  Part of: Cho K, Park C, Böttger-Schnack R (2021) Taxonomy of three species of the genus Spinoncaea (Copepoda, Oncaeidae) in the North Pacific Ocean with focus on morphological variability. ZooKeys 1043: 147-191. https://doi.org/10.3897/zookeys.1043.64438