Spinoncaea ivlevi (Shmeleva, 1966), female, robust form (northwestern equatorial Pacific) A P1, anterior [a: ornamentation on intercoxal sclerite of another specimen, b: second endopod segment shown separately, strong setules on inner margin arrowed] B P2, posterior C P3, anterior D P4, anterior, seta on basis figured separately. 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