Planche 1 issued from : V.N. Andronov in Zool. Zh., 1992, 71 (7). [p.141, Fig.1]. As Ryocalanus admirabilis.
Female from off Cap Blanc, Mauritania): 1, dorsal view; 2, lateral view; 3, Urosome (lateral); 4, Urosome (ventral); 5, Anal segment and Furca; 6, P4; 7, A1 (proximal segments); 11, Rostrum;

Male: 8, dorsal view; 9, lateral view; 10, A1 (dital segments); 12, Rostrum.

Planche 2 issued from : V.N. Andronov in Zool. Zh., 1992, 71 (7). [ p.142, Fig.2]. As Ryocalanus admirabilis.
Female: 1, A2; 2, Md; 3, Mx1; 4, Mx2; 5, Mxp.

Male: 6-10, P1 to P5.
Nota: The structure of genicular A1 differs from A1 of other Calanoida genera not only by the position of the bend place, but also that A1 bends out backward but not forward as in all other known calanoid copepods.

Planche 3 Issued from : V.N. Andronov in Russian Acad. Sci. P.P. Shirshov Inst. Oceanol. Atlantic Branch, Kaliningrad, 2014. [p.33, Fig.11]. As Ryocalanus admirabilis after Andronov, 1992.
geniculate right A1 male and distal segments from another view.