Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Stephidae ( Famille )
            Stephos ( Genre )
Stephos cryptospinosus  Zagami, Campolmi & Costanzo, 2000   (F,M)
Ref.:
Zagami & al., 2000 (p.16, figs.F,M); Vives & Shmeleva, 2007 (p.850, figs.F,M, Rem.); Brylinski & Courtot, 2019 (p.3, Rem.: F, M, figs.F, M)
Espèce Stephos cryptospinosus - Planche 1 de figures morphologiquesissued from : G. Zagami, M. Campolmi & G. Costanzo in Journal Plankton Res., 2000, 22 (1). [p.17, Fig.1]
Female: A, habitus (dorsal); B, posterolateral margin of 5th pedigerous somite; C, urosome (dorsal); D, A1.
All scales in microns.


Espèce Stephos cryptospinosus - Planche 2 de figures morphologiquesissued from : G. Zagami, M. Campolmi & G. Costanzo in Journal Plankton Res., 2000, 22 (1). [p.18, Fig.2].
Female: A, A2; B, Md; C, Mx1; D, Mx2; E, Mxp.


Espèce Stephos cryptospinosus - Planche 3 de figures morphologiquesissued from : G. Zagami, M. Campolmi & G. Costanzo in Journal Plankton Res., 2000, 22 (1). [p.20].
Female: A, P1; B, P2; C, P3; D, P4; E, P5.


Espèce Stephos cryptospinosus - Planche 4 de figures morphologiquesissued from : G. Zagami, M. Campolmi & G. Costanzo in Journal Plankton Res., 2000, 22 (1). [p.22, Fig.4].
Male: A, habitus (dorsal); B, urosome (dorsal); C, A1; D, P5.
All scales in microns.


Espèce Stephos cryptospinosus - Planche 5 de figures morphologiquesIssued from : J.-M. Brylinski & L. Courcot in Bioinvasions Records, 2019, 8. [p.4, Fig.2, A, C].
Female (from 47°52'06''N, 03°55'00''W): A, urosome (ventral view); C, same (lateral view ). Scale bar: 100 µm.
Sp: spermatophore; DGS: genital double somite; HS: hyaline sheath; L: lappets of genital operculum; ; P: point of the hyaline sheath. Arrows: ''cryptospine'' on last prosomite.

Nota:
- Posterior prosomal margins slightly asymmetrical. Minute spinule present dorso-laterally on each side (demonstrated using SEM observations).
- Urosome 4-segmented.
- Genital double-somite symmetrical; central genital aperture framed by 2 asymmetrical and very fine lappets (only observable with SEM).
- Tubular spematothore implanted directly in genital opening, attached by long tubule.
- When carrying a spermatophore, the genital double-somite is partially covered by a hyaline sheath which tapers to a point dorsally; this structure appeared fixed to the right side of the genital double-somite and extends forward as far as the basal articulation of the right P4.


Espèce Stephos cryptospinosus - Planche 6 de figures morphologiquesIssued from : J.-M. Brylinski & L. Courcot in Bioinvasions Records, 2019, 8. [p.4, Fig.2, E, D].
Female: D-E, P5. Scale bar: 10 µm.
Arrows: patch of micro-spinules.

Nota:
- P5 uniramous, 2-segmented; proximal segment naked, distal segment armed with 1 short central spine on middle of anterior surface; patch of very small spinules present proximally to the spine. Apical part of P5 slightly asymmetrical with row of 8-9 or 12-15 spinules on outer margin , and 6-7 or 4-5 spinules on inner margin, of right and left legs, respectively.


Espèce Stephos cryptospinosus - Planche 7 de figures morphologiquesIssued from : J.-M. Brylinski & L. Courcot in Bioinvasions Records, 2019, 8. [p.45 Fig.3, B].
Male: B, urosome (ventral view). Scale: 40 µm. Arrow: short process directed towards left side on the 2nd urosomite.

Nota:
- Posterior prosomal margin symmetrical with minute spinule (as in female).
- Urosome 5-segmented.
- P5 elongate and markedly asymmetrical, both legs uniramous. Right bleg slender, 4-segmented; 1st and 2nd segments short, unarmed; 3rd segment elonjgate bearing acute outer process near base, slightly curving inwards; 4th segment comprising 2 processes of unequal length. left leg 5-segmented, 1st to 3rd segments short, unarmed, 4th segment rpbust and swollen; 5th segment complex with 2 pairs of long,0 wide lamellar spines, 1 pair of long, narrow lamellar spines, and 1 row of 8 wide, amber-coloured claws directed posteriorly.

Ref. compl.:
Mazzocchi & Di Capua, 2010 (p.427); Belmonte, 2018 (p.273, Table I: Italian zones)
NZ: 2

Carte de distribution de Stephos cryptospinosus par zones géographiques
Espèce Stephos cryptospinosus - Carte de distribution 3Issued from : J.-M. Brylinski & L. Courcot in Bioinvasions Rec., 2019, 8 (2). [p.358, Fig.1]
Global distribution of Stephos cryptospinus (black star) and S. marsalensis (white star). C : Concarneau ; W: Wimereux .
Loc:
W Medit. (W Sicily: Stagnone di Marsala); NE Atlantic (Concarneau)
N: 4
Lg.:
(838) F: 0,86; M: 0,78; (1226) F: 0,90; M; 0,75, 0,85; {F: 0,86-0,90; M: 0,75-0,85}
Rem.: côtière (hyperbentique, 2-3 m).
Voir aussi les remarques en anglais
Dernière mise à jour : 19/12/2020

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