Plate 1 issued from : O. Tanaka in Proceedings Symposium on Crustacea. Symp. Ser. mar. biol. Ass. India, 1966, (2) 1. [p.41, Fig.2]. As Pseudodiaptomus cornutus.
Female: a, habitus (dorsal); b, head (lateral); c, last thoracic segment and urosome (lateral left side); d, anal segment and furca (dorsal); e, P2; f, P5.
Nota: The urosome segments and furca are in the proportional lengths as 31:14:17:16:22 = 100. Prosome and urosome are in the proportional lengths as 70:30. P5 is symmetrical.

Plate 2 issued from : H.Y. Soh, H.-L Suh, O.H. Yu & S. Ohtsuka in Hydrobiologia, 2001, 448. [p.212, Fig.7].
Female: A, habitus (dorsal); B, idem (lateral right side); C, P5 (posterior view).

Male: D, habitus (dorsal); E, idem (lateral right side); F, right A1 (segments VIII-XV); G, P5 (posterior view).

Plate 3 issued from : H.Y. Soh, H.-L Suh, O.H. Yu & S. Ohtsuka in Hydrobiologia, 2001, 448. [p.213, Fig.8, A].
Female: A, scanning electron micrographs of the genital area.

Plate 4 issued from : K. Hirakawa in Bull. Plankton Soc. Japan, 1983, 30 (1). [p.66, Fig.1].
Female (from Izumozaki harbour, Japan): a-b, habitus (dorsal and lateral, respectively); c, cross section of 2nd thoracic somite; d-e, urosome (dorsal and lateral, respectively); f, genital somite (ventral).

Plate 5 issued from : K. Hirakawa in Bull. Plankton Soc. Japan, 1983, 30 (1). [p.67, Fig.2].
Female: a, A1; b, A2; c, Md; d, Mx1; e, Mx2; f, Mxp; g-k, P1 to P5; l, terminal segment of P5.

Plate 6 issued from : K. Hirakawa in Bull. Plankton Soc. Japan, 1983, 30 (1). [p.68, Fig.3].
Male: a, habitus (dorsal); b, P5; c, right A1; d, outer lamelliform plate of rightb endopod of P5.

Plate 7 issued from : K. Hirakawa in Bull. Plankton Soc. Japan, 1983, 30 (1). [p.68, Table 1].
Female & Male: Comparison of the morphological characters in P. nihonkaiensis and P. cornutus Nicholls, 1944.