Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Phaennidae ( Family )
            Onchocalanus ( Genus )
Onchocalanus paratrigoniceps  Park, 1983   (F,M)
Syn.: ? Onchocalanus trigoniceps: C.B. Wilson, 1942 a (p.200, fig.F)
Park, 1983 a (p.333, Descr.F,M, figs.F,M)
Species Onchocalanus paratrigoniceps - Plate 1 of morphological figuresissued from : T. Park in Antarct. Res. Ser. Washington, 1983, 39 (5). [p.336, Fig.10].
Female: a, habitus (lateral right side); b, forehead (lateral); c, idem (dorsal); e, last thoracic segments and urosome (dorsal); f, genital segment (ventral); g, idem (lateral right side); h, Mxp; i, distal part of Mxp; j, P1 (anterior); k, P5 (posterior).

Species Onchocalanus paratrigoniceps - Plate 2 of morphological figuresissued from : T. Park in Antarct. Res. Ser. Washington, 1983, 39 (5). [p.337, Fig.11].
Male: a, anterior forehead (lateral); b, forehead (lateral); c, idem (dorsal); d, last thoracic segments of metasome and urosome (dorsal); e, idem (lateral left side); f, rostrum (anterior); g, A2.

Species Onchocalanus paratrigoniceps - Plate 3 of morphological figuresissued from : T. Park in Antarct. Res. Ser. Washington, 1983, 39 (5). [p.338, Fig.12].
Male: a, Mx1; b, Md; c, Mx2; d, Mxp; e, endopod of Mxp; f, P1 (anterior); g, P5 (posterior).

Species Onchocalanus paratrigoniceps - Plate 4 of morphological figuresissued from : C.B. Wilson in Scientific Results of Cruise VII of the Carnegie during 1928-1929. Biology-I. Carnegie Inst. Wash. Publ. 536, 1942. [p.229, Fig.96]. As Onchocalanus trigoniceps. With doubt.
Female (from off E Juan Fernandez Island): 96, P5.
Nota: Head without frontal crest.

Compl. Ref.:
Razouls & al., 2000 (p.343, tab. 2, Appendix); Park & Ferrari, 2009 (p.143, Table 4, fig.1, Appendix 1, biogeography)
NZ: 2 + 1 doubtful

Distribution map of Onchocalanus paratrigoniceps by geographical zones
Species Onchocalanus paratrigoniceps - Distribution map 3Issued from : E.T. Park & F.D. Ferrari in A selection from Smithsonian at the Poles Contributions to International Polar year. I. Krupnik, M.A. Lang and S.E. Miller, eds., Publs. by Smithsonian Institution Scholarly Press, Washington DC., 2009. [p.165, Fig.1]
Distribution of selected pelagic calanoids Onchocalanus paratrigoniceps of the Southern Ocean and the closest relative.
Antarct. (S & SE Pacif.), sub-Antarct. (off S Australia, SE Pacif.), off E Juan Fernandez Islands (sampling depth 1000 m)
N: 2 + ?1
(15) F: 9,08-8,58; M: 8,33; {F: 8,58-9,08; M: 8,33}
Rem.: Sampling depth (Antarct., sub-Antarct.) : 0-2000 m.
This species is closely related to O. trigoniceps
Last update : 27/01/2015
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 Any use of this site for a publication will be mentioned with the following reference :

Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2023. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed December 05, 2023]

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Marine Planktonic Copepods

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