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Copépodes planctoniques marins
Pachos trispinosum  Rose, 1943   (M)
Taxonomy
Ordre Cyclopoida
Famille incertae sedis (Cyclopoida)

Références

Rose, 1943 (p.149, Descr.M, figs.M, Rem.)

Figures

Planche 1 Issued from : M. Rose in Bull. Soc. Zool. Fr., 1943, 68. [p.150].
Male (from Algiers Bay): habitus (dorsal); A1 antennula; A2, antenna; T: transparent points-like on cephalic and thoracic teguments.

Nota: Front of forhead with 3 thick points and body, except the urosome, with very numerous minute spines giving an granulose aspect.
Md tiny, stylet-like.
Mx1 rudimentary, process-like with any setae.
Mx2 rudimentary, atrophied.
P5 represented by only 1 plumose seta on the 5th thoracic segment very short., at the base of the seta is fouunded a vestigial second seta like a short spine.
Urosome 4-segmented, the 2nd and 3rd urosomal segments equal and very short, segment anal about equal to the two preceding together .
Planche 2 Issued from : M. Rose in Bull. Soc. Zool. Fr., 1943, 68. [p.151].
Male: Ur, urosome (dorsal); Mxp2, maxillipède posterior (= Mxp); P1 to P4, swimming legs.

Nota: Mxp 4-segmented, 1st segment large, trapezoid, 2nd segment long and swollen at base with a long spine in the middle on the inner edge and below a group of little spines; 3rd segment short and naked, bearing the 4th claw-like very long and curved, ending by a little rounded hook,; this segment is swollen at base with laterally 2 spiniform setae, symmetrically located.
Caudal rami 3 times longer than wide, each with 6 plumose setae.

Distribution

NZ: 1

Carte de distribution de Pachos trispinosum par zones géographiques


Localisations

W Mediterranean Sea (Algiers Bay)

Citations

N: 1

Dimensions (mm)

Remarques

Depth.
After Rose (1943, p.153) this male could be perhaps the male of Pachos tuberosum.
Dernière mise à jour : 17/01/2020