Species Card of Copepod
Calanoida ( Order )
    Diaptomoidea ( Superfamily )
        Pontellidae ( Family )
            Labidocera ( Genus )
Labidocera darwini  Lubbock, 1853   (F,M)
Syn.: Labidocera aestiva Paiva-Carvalho, 1945; 1952 a (p.148, figs.F,M);
no L. darwinii : T. Scott, 1894 b (p.83);
? L. lubbocki Giesbrecht, 1892 (p.446, figs.F,M)
Ref.:
Lubbock, 1853 (1854) (p.25, 29, figs.F,M); 1853 b (p.115, 116, 163, fig.M); Giesbrecht, 1897 b (p.254, Rem.); Giesbrecht & Schmeil, 1898 (p.136); Fleminger, 1965 (p.127); Björnberg, 1972 (p.58, Rem.); Fleminger, 1975 (p.395 & suiv.); Björnberg & al., 1981 (p.660, figs.F,M); Silas & Pillai, 1976 (p.774); Bradford-Grieve & al., 1999 (p.885, 959, figs.F,M, as darwinii)
Species Labidocera darwini - Plate 1 of morphological figuresissued from : J.M. Bradford-Grieve, E.L. Markhaseva, C.E.F. Rocha & B. Abiahy in South Atlantic Zooplankton, Ed. D. Boltovskoy, 1999, Vol. 2. [p.1068, Fig. 7.383]. As Labidocera darwinii.
Female characters (from key, p.959):
- urosome (dorsal).
- Head without lateral hooks.
- Forehead without crest, rounded in dorsal view.
- Posterior corners of last thoracic segment produced into long points, with out posterior lobes.
- Exopod terminal segment of P5 with bifurcate tip.
- Genital segment with wide, rounded projection.

Male characters (from key, p.959) :
- P5 (B = basis; l = leff leg, r = right leg).
- Basis of left P5 with broadly-based, triangular, inner distal process which extends just beyond distal border of exopodal segment 1.

NZ: 1

Distribution map of Labidocera darwini by geographical zones
Loc:
SW Atlant. (Patagonia, S Brazil)
N: 4
Lg.:
(202) F: 2; M: 2-1,5; {F: 2,00; M: 1,50-2,00}
Rem.: epipelagic.
? Cf. Labidocera lubbocki.
Diagnosis for L. kuwaitiana in the 'darwinii' species group after Prusova & Al-Yamani (2014, p.1165) :
Females:
- 1: Urosome of 2 somites.
- 2: Genital somite asymmetrical, with wide rounded projection on right in dorsal view.
Males:
- 1: Urosome of 4 somites.
- 2: Left P5 endopod extends to or slightly beyond distal border of exopodal segment 1.
- 3: Right A1 segment's XXI-XXIII toothed process extends just beyond proximal margin of segment XXIV.
Last update : 19/01/2016
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2022. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed January 28, 2022]

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