Species Card of Copepod
Calanoida ( Order )
    Arietelloidea ( Superfamily )
        Arietellidae ( Family )
            Metacalanus ( Genus )
Metacalanus inaequicornis  (Sars, 1902)   (F,M)
Syn.: Scottula inaequicornis Sars, 1902 (1903) (p.125, figs.F,M); Van Breemen, 1908 a (p.142, figs.F,M); Rose, 1933 a (p.244, figs.F,M); Matthews, 1967 (p.159, Table 1, Rem.); Bradford, 1969 b (p.502); Campaner, 1984 (p.102, 107, figs.F,M, Rem.)
Ohtsuka, 1985 (p.305, Rem.); Markhaseva & Schnack-Schiel, 2003 (p.120)
Species Metacalanus inaequicornis - Plate 1 of morphological figuresissued from : A.F. Campaner in Crustaceana, Supplt 7, 1984. [p.103, Fig.1]. As Scottula inaequicornis.
Female (Korsfjorden, Norway): A, habitus dorsal, distribution of pores in the integument); B, Md (masticatory part of the mandibular gnathobase in lateral view and a detail of the tooth, placed most posteriorly, in a different view); C, genital segment (lateral right side); D, idem (ventral, showing the seminal receptacles); E, anal segment (dorsal, showing the operculum); F, iem (lateral left side).

Species Metacalanus inaequicornis - Plate 2 of morphological figuresissued from : A.F. Campaner in Crustaceana, Supplt 7, 1984. [p.103, Fig.1]. As Scottula inaequicornis.
Female: A, P1; B, setae on basipodite 1 of Mxp; C, details of setae on 4th inner lobe of basipodite 1 and spine on basipodite 2 of Mx2; D, P5.

Male: E, P5.

Compl. Ref.:
Ben Ltaief & al., 2017 (p.1, Table III, Summer relative abundance); El Arraj & al., 2017 (p.272, table 2);
NZ: 3

Distribution map of Metacalanus inaequicornis by geographical zones
W Norway (Korsfjorden, Raunefjorden: all the year), North Sea, off Canary Is. (Great Meteor Simount: 28-30° N,28° W), E Medit. (G. of Gabes)
N: 5
(65) F: 1,1; M: 0,86; (292) F: 1,14-1,11; M: 0,94-0,86; {F: 1,10-1,14; M: 0,86-0,94}
Rem.: hyperbenthic (55-110 m), epibenthic (300-537 m).
Ben Ltaief & al. (2017 (p.11, Table III) note for the first record of this species in the Mediterranean Sea (Tunisia: Gulf of Gabes).
Last update : 25/10/2022
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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 23, 2024]

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Marine Planktonic Copepods

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