Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Stephidae ( Family )
            Stephos ( Genus )
Stephos minor  T. Scott, 1892   (F,M)
Syn.: Stephus minus : Wolfenden, 1908 (p.22, Rem.);
Stephus minor : Giesbrecht & Schmeil, 1898 (p.29); Sewell, 1948 (p.483)
Ref.:
T. Scott, 1892 (p.245, figs.F,M); Sars, 1919 (1921) (p.4, figs.F,M); Bradford-Grieve, 1999 a (p.13, Redescr.F,M); Bradford-Grieve, 1999 a (p.25, Table1: Rem.); Kos, 2016 (p.28, figs.F, M, Rem.)
Species Stephos minor - Plate 1 of morphological figuresissued from : G.O. Sars in An Account of the Crustacea of Norway. Suppl. Vol. VII. Copepoda Supplement. Published by the Bergen Museum, 1921. [Pl. II].
Female & Male.


Species Stephos minor - Plate 2 of morphological figuresissued from : T. Scott in Rep. Fishery Bd Scotl., 1892, 10 (3). [Pl.VII, Figs.1-13].
Female (from off St Monans, Firth of Forth, Scotland): 1, habitus (dorsal); 2, A1; 3, A2; 4, Md; 5, Mx2; 6, Mxp; 7, P1; 8, P2; 9, P4; 10, P5, 12, urosome (dorsal).

Male: 11, P5; 13, urosome (dorsal).


Species Stephos minor - Plate 3 of morphological figuresFemale (from Pas de Calais, nearshore France): P5 and genital double-somite with genital area and opercule (ventral view).
Le lac des cygnes. Micrographs from Jean-Michel Brylinski (Laboratoire d’Océanologie et de Géosciences, Wimereux, France)

Compl. Ref.:
T. Scott, 1902 (p.450); Holmes, 2001 (p.53, Rem.)
NZ: 2

Distribution map of Stephos minor by geographical zones
Loc:
Norway, Scotland, Smith bank, Moray Firth, Ireland (Kilkieran Bay)
other locality: 70°32" N, 23°08' E.
N: 5
Lg.:
(32) F: 0,74; M: 0,74; (47) F: 0,74; M: 0,74; (132) F: 0,73; M: 0,6; (502) F: 0,74; M: 0,74; {F: 0,73-0,74; M: 0,60-0,74}

The mean female size is 0.738 mm (n = 4; SD = 0.01), and the mean male size is 0.705 (n = 4; SD = 0.07). The size ratio (male : female) is approximately 0.96.
Rem.: hyperbenthique.
After Bradford-Grieve (1999 a, p.25) this species belongs to type III (see Genus Stephos).
Last update : 08/02/2019
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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 May 20, 2024]

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