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Marine Planktonic Copepods
Placocalanus inermis  Ohtsuka, Fosshagen & Soh, 1996   (F,M)
Taxonomy
Order Calanoida
Superfamily Epacteriscoidea
Family Ridgewayiidae

References

Ohtsuka & al.,1996 (p.254, figs.F,M)

Figures

Plate 1 issued from : S. Ohtsuka , A. Fosshagen & H.Y. Soh inSarsia, 1996, 81. [p.254, Fig.4].
Female (from Nagannu Is., Okinawa): A, habitus (dorsal); B, idem (lateral right side); C, rostrum; D, genital double-somite (ventral; seminal receptacle arrowed).
Scales in mm.
Plate 2 issued from : S. Ohtsuka , A. Fosshagen & H.Y. Soh inSarsia, 1996, 81. [p.256, Fig.5].
Female: A, A2 (coxa, basis and endopod); B, A2 (exopod); C, Md (mandibular gnathobase); D, Md (mandibular palp); E, Mx1; F, Mx2; G, Mxp; H, P1 (anterior surface); I, endopod of P1; J, P2 (anterior surface); K, P3 (anterior surface); L, P4 (posterior surface); M, P5 (posterior surface); N, endopod of P5.
Scales in mm. Holotype: A-F, H-N; paratype: G.
Plate 3 issued from : S. Ohtsuka , A. Fosshagen & H.Y. Soh inSarsia, 1996, 81. [p.257, Fig.6].
Male: A, habitus (lateral right side); B, right A1 (segment XXV arrowed); C, left P5 (posterior surface); D, right P5 (posterior surface).
Scales in mm.

Distribution

NZ: 1

Distribution map of Placocalanus inermis by geographical zones


Localisations

S Japan (Nagannu Island, Okinawa)

Quotations

N: 1

Dimensions (mm)

(514) F: 0,48-0,45; M: 0,49; {F: 0,45-0,48; M: 0,49}

Remarks

hyperbenthic (depth: 47-51 m). Sandy bottom.
Cf. P. longicauda in Ohtsuka & al. (1996, p.253, Table 1).
Last update : 28/01/2015

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