Species Card of Copepod
Cyclopoida ( Order )
    Oncaeidae ( Family )
        Oncaea ( Genus )
Oncaea olsoni  Heron, 1977   (F,M)
Ref.:
Heron, 1977 (p.60, figs.F,M); Heron & al.,1984 (p.465); Heron & Frost, 2000 (p.1040, fig.F, tab.2, 3)
Species Oncaea olsoni - Plate 1 of morphological figuresissued from : G.A. Heron in Antarct. Res. Ser. Washington, 1977, 26. [p.63, Fig.15, i-l].
Female (from SW Pacific-Antarctic area): i, habitus (lateral; scale bar: X); j, posterior of last prosomal segment and urosome (dorsal; scale bar: Y); k, right A2 (scale bar: Y); l, labrum (scale bar: Z).


Species Oncaea olsoni - Plate 2 of morphological figuresissued from : G.A. Heron in Antarct. Res. Ser. Washington, 1977, 26. [p.64, Fig.16].
Female: a, left Md (scale bar: Z); b, left Mx1 (scale bar: Z); c, right Mx2 (scale bar: Z); d, right Mxp (scale bar: Y); e-h, P1 to P4 (scale bar: Y); i, P5 (scale bar: Z).

Male: j, habitus (lateral; scale bar: X); k, posterior of last prosomal segment and urosome (lateral; scale bar Y); l, urosome (dorsal; scale bar: Y); m, left Mxp (scale bar: Y); n, P5 (scale bar: Z).


Species Oncaea olsoni - Plate 3 of morphological figuresissued from : G.A. Heron & B.W. Frost in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1022, Fig.2, A].
Female: P2-P4 endopod terminal ''spine set'' (combination of the lengths, shapes, and position of the three or two terminal spines on the endopods of swimming legs 2-4 , from left to right in figure, for different Oncaea' species).

Nota: endopods of P2 and P3 with length of cones about equal to distance between lateral and subterminal spine insertions.

Compl. Ref.:
Razouls & al., 2000 (p.343, tab. 2, Appendix); Nishibe & Ikeda, 2004 (p.931, Tab. 2, 4, 5)
NZ: 3

Distribution map of Oncaea olsoni by geographical zones
Loc:
Antarct. (SW Pacif.), Station 'P', NE Pacif., Washington inland, NE Japan (Oyashio region)
N: 3
Lg.:
(679) F: 0,91-0,75; M: 0,8-0,71; (848) F: 0,72-0,85; M: 0,7; {F: 0,72-0,91; M: 0,70-0,80}
Rem.: Sampling depth (Antarct.) : 1000-2000 m.
Last update : 27/01/2016
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2021. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed November 27, 2021]

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