Species Card of Copepod
Calanoida ( Order )
    incertae sedis (Calanoida) ( Family )
        incertae sedis (Calanoida, inc. sedis) ( Genus )
Species 1  Roe, 1975   (F)
Ref.:
Roe, 1975 (p.367, Descr.F, figs.F)
Species Species 1 - Plate 1 of morphological figuresissued from : H.S.J. Roe in Bull. British Mus. (Natural History) Zool., London, 1975, 28 (7). [p.368, Fig.33].
Female (from 18°N, 25°W): a, Cephalothorax (dorsal); b, forehead (lateral); c, last thoracic segment and urosome (lateral); d, A2; e, Md; f, Mx1; g, Mx2; h, Mxp; i, P1; j, P2; k, P3; l, P4; m, P5.
Bar scale 0.1 mm unless indicated.
Nota: Rostrum curved spike containing a central groove, presumably formed of two more or less filaments.
Cephalothorax about5 times longer than the 4-segmented abdomen.
Head and 1st thoracic segment separate, 4th and 5th separate.
last thoracic segment slightly produced laterally.
Mx1 (Fig.33f) has a damaged 1st outer lobe; the other Mx1 of the same specimen has 7 large and 2 small setae on this lobe.
In Mx2 all the lobes are at the distal end of the appendage; 4th lobe with 3 large curved setae, furnished with many small spines; 5th lobe with 2 such setae and 2 small ones; endopodite with 8 long thin filaments which, as far as can be seen, all taper to a fine point, none of them is brush-like.
P2 to P4 are incomplete but the endopodites of P2 and P3 are covered with fairly large spines.
P5 small and uniramous; each side has 3 segments, the 3rd having a long internal spine and 2 shorter stout spines; on one side the surface of the 3rd segment has 2 small spines.

NZ: 1

Distribution map of Species 1 by geographical zones
Loc:
NE Atlant. (Cape Verde Is.)
N: 1
Lg.:
(8) F: 1,29; 1,44; {F: 1,29-1,44}
Rem.: bathypelagic (800-1010 m).
Roe (1975, p.369) is unable to identify these females with any of the four families having sensory setae on the Mx2 endopod. Thes setae are all simple and worm-like, thereby excluding them from either the Phaennidae or Scolecitrichidae according to Bradford (1973). The presence of a P5 distinguishes them from Diaixidae. They may be members of the Tharybidae but as their swimming legs are incomplete it is impossible to be certain.
Last update : 01/02/2015
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2021. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed October 21, 2021]

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Marine Planktonic Copepods

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