Spines of the foregut and pleopods in Ischiomysis proincisa sp. nov.; paratypes adult ♂ (BL 4.5 mm, A–I) and adult ♀ (BL 4.3 mm, J, K); A–D. Modified spines of the foregut in dorsal view, from the anterior (A, B) and posterior (C) parts of the lateralia and from dorsolateral infolding (D); E–I. Series of right male pleopods 1–5, lateral = rostral face; J. Right female pleopod 1, lateral; K. Left female pleopod 5, lateral.

 
 
  Part of: Wittmann KJ, Wirtz P (2024) An update on the genus Ischiomysis with a description of I. proincisa sp. nov. (Crustacea, Mysida) from a sublittoral marine cave in the Gulf of Guinea (tropical E-Atlantic). Zoosystematics and Evolution 100(4): 1431-1442. https://doi.org/10.3897/zse.100.130288