Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Phaennidae ( Family )
            Cornucalanus ( Genus )
Cornucalanus simplex  Wolfenden, 1905   (F)
Syn.: no Cornucalanus simplex : Sewell, 1929 (p.178, fig.F)
Wolfenden, 1905 a (p.22); A. Scott, 1909 (p.83, figs.F, Rem.); Sars, 1925 (p.153, figs.F); Rose, 1933 a (p.139, figs.F); Vervoort, 1951 (p.93, Rem.: with doubt); 1957 (p.91, 92, Rem.); 1965 (p.34); Park, 1983 a (p.364, figs.F, Rem.); Vives & Shmeleva, 2007 (p.685, figs.F, Rem.)
Species Cornucalanus simplex - Plate 1 of morphological figuresissued from : T. Park in Antarct. Res. Ser. Washington, 1983, 39 (5). [p.364, Fig.31].
Female: a, forehead (lateral); b, last thoracic segments and urosome (lateral left side); c, idem (dorsal); d, forehead (dorsal); e, rostrum (anterior); f, endopod of Mxp; g, P5 (posterior).

Species Cornucalanus simplex - Plate 2 of morphological figuresIssued from : G.O. Sars in Résult. Camp. Scient. Prince Albert I, 69, pls.1-127 (1924). [Pl.XLII, figs.15-20].
Female: 15, habitus (dorsal); 16, idem (lateral left side); 17, forehead (lateral); 18, rostrum (frontal view); 19, Mxp; 20, P5.

Species Cornucalanus simplex - Plate 3 of morphological figuresissued from : A. Scott in Siboga-Expedition, 1909, XIX a. [Plate XXXV, Figs.1-9].Female (from Halmahera Sea): 1, habitus (dorsal); 2, forehead (lateral); 3, last thoracic and genital segments (left side); 4, rostrum; 5, A1; 6, Mx2 (distal portion); 7, P2; 8, P4; 9, P5.

Compl. Ref.:
Sewell, 1948 (p.501, 521, 546); Grice & Hulsemann, 1967 (p.16); Björnberg, 1973 (p.331, 385); Razouls & al., 2000 (p.343, Appendix); Park & Ferrari, 2009 (p.143, Table 4, Appendix 1, biogeography)
NZ: 6

Distribution map of Cornucalanus simplex by geographical zones
Antarct. (S Atlant., SW Pacif., Ross Sea), off Ghana, off Cape Finisterre, Azores, W Indian, Indonesia-Malaysia, N Chile
N: 8
(1) F: 6,3; (5) F: 5; (15) F: 6,41; 6,35; {F: 5,00-6,41}
Rem.: Bathypelagic.
Sampling depth (Antarct.) : 0-2000 m.
This species is similar to C. robustus but can be distinguished from it.
For Vervoort (1957, p.92) this species has a rounded head, without any trace of a cephalic spine. The curved claws on the terminal portion of Mxp both have a longitudinal row of fine, closely packed spinules and thus are quite different from those met with in C. chelifer. The postero-lateral thoracic border is broadly triangular and minutely pointed; the small point is obtuse. P5 of both sides are 3-segmented; the basal segments of each sides are sparingly haired and fused to some extent; the free terminal segments are densely haired; the apical segment has 3 spinules, 1 at the apex and 2 subapical spines of unequal length on each side of the apical spine.
Last update : 02/01/2015
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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., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed July 21, 2024]

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