Plate 1 issued from : S. Ohtsuka , A. Fosshagen & H.Y. Soh in Sarsia, 1996, 81. [p.249, Fig.1].
Female (from Nagannu Is., Okinawa): A, habitus (dorsal); B, idem (lateral right side); C, prosome (lateral right side, anvil-like basal process of P1 indicated by large arrow, round coxal process by small arrow); D, genital double-somite (dorsolateral, seminal receptacle arrowed); E, rostrum; F, labrum and A2; G, basal setae of A2; H, Md (mandibular gnathobase); I, Md (mandibular palp).
Scales in mm. Holotype: A, B, D-F, H, I; paratype: C, G.

Plate 2 issued from : S. Ohtsuka , A. Fosshagen & H.Y. Soh in Sarsia, 1996, 81. [p.251, Fig.2].
Female: A, A1 (posterior surface); B, Mx1 (praecoxal arthrite and coxal endite); C, Mx1 (coxa, basis and rami); D, Mx2; E, Mxp (three elements on 3rd syncoxal endite missing); F, P1 (anterior surface; anvil-like basal process arrowed); G, P1 (basis and endopod, anvil-like basal process arrowed); H, P2 (anterior surface); I, P3 (posterior surface); J, exopod of P3 (anterior surface; scar of middle spine arrowed); K, P4 (anterior surface); L, P5 (anterior surface).
Scales in mm. Holotype: A-C, E-L; paratype: D.

Plate 3 issued from : S. Ohtsuka , A. Fosshagen & H.Y. Soh in Sarsia, 1996, 81. [p.252, Fig.3].
Male: A, habitus (lateral right side); B, right A1 (anterior surface; segment XXV arrowed); C, right P5 (anterior surface); D, left P5 (anterior surface); E, left P5 (2nd and 3rd exopod segments, minute seta arrowed; anterior surface).
Scales in mm.

Plate 4 issued from : S. Ohtsuka, A. Fosshagen & H.Y. Soh in Sarsia, 81. [p.253, Table 1].
Setation and spinulation of legs 1-4 of the three species of Placocalanus females.
Bold letters mean differences between species.