Species Card of Copepod
Calanoida ( Order )
    Diaptomoidea ( Superfamily )
        Tortanidae ( Family )
            Tortanus ( Genus )
                Atortus ( Sub-Genus )
Tortanus (Atortus) capensis  Grindley, 1978   (F,M)
Grindley, 1978 (p.219, figs.F,M, juv.)
Species Tortanus (Atortus) capensis - Plate 1 of morphological figuresissued from : J.R. Grindley in Ann. S. Afr. Mus., 1978, 74 (9). [p.221, Fig.1].
Female (from Langebaan Lagoon, South Africa): A, A1; B, habitus (dorsal); C, idem (lateral left side); D, P5; E, P1; F, P2; G, P3; H, P4.
Nota: Prosome with a cervical groove prominent in lateral view. Rostral projections without filaments. Eyes prominent and reddish. Head and 1st thoracic segment separate, 4th and 5th partly fused. Urosome 2-segmented, last segment partly fused with the caudal rami. Caudal rami asymmetrical. A1 15-segmented, aesthetasks appear on the proximal part. A2 and mouthparts idemtical in the female and male., except for the mandibular palp.

Species Tortanus (Atortus) capensis - Plate 2 of morphological figuresissued from : J.R. Grindley in Ann. S. Afr. Mus., 1978, 74 (9). [p.223, Fig.2].
Male: A-B, left A1; C, habitus (dorsal); D, right A1; E, caudal rami; F, habitus (lateral right side).
Nota: Eyes not prominent and dark brown. Urosome 5-segmented. Caudal rami symmetrical and about 5 times as long as wide. A115-segmented, right A1 geniculate

Species Tortanus (Atortus) capensis - Plate 3 of morphological figuresissued from : J.R. Grindley in Ann. S. Afr. Mus., 1978, 74 (9). [p.224, Fig.3].
Male: A, P5; B, right P5; C, left P5.

Female: D, A2; E, Md; F, Mx1; G, Mx2 (with end one seta enlarged); H, Mxp.
Nota: Basipod with 1 lateral and 1 sub-terminal setae, plus a medial fringe of fine hairs; exopod 1-segmented with 6 setae, plus a small sub-terminal fringe of bristles; endopod 2-segmented with 4 teminal setae and 1 small sub-terminal seta. Mandibular palp with exopod and endopod each 2-segmented, bearing each 5 and 6 setae, respectively (Male with exopod and endopod each 1-segmented, bearing 4 and 5 setae respecively. Mx1 with gnatobase, bearing 7 serrated and plumose spines, 3 plumose setae and 3 small non-plumose setae; endopod 1-segmented with 3 barbed terminal setae, one of which has widely spaced plumules. Mx2 with 3 endites, and indistinct indications of segmentation; 6 long termianl setae are flattened and bear rows of spinules all medially orietated (see enlarged figure of tip). Mxp small and 3-segmented, the basal segment with 2 long, curvaceous setae ornemented with diverging pairs of bristles, and the 3rd segment bearing a small lateral seta and 3 strongly curved barbed terminal setae.
P5 male uniramous and asymmetrical, the right leg 3-segmented; left leg 4-segmented

Compl. Ref.:
Grindley, 1977 (p.341, Table 2, fig.2, 3, 4, 14); Ohtsuka, 1992 a (p.265)
NZ: 2

Distribution map of Tortanus (Atortus) capensis by geographical zones
Species Tortanus (Atortus) capensis - Distribution map 2issued from : J.R. Grindley in Trans. roy. Soc. S. Afr., 42, 3 & 4. [p.353, Fig.4].
Distribution of Tortanus capensis from Saldanha Bay to Schrywershoek area (33°S, 18° E).
Compare this distribution with the species in the same site: Paracartia longipatella, Pseudodiaptomus hessei, Oithona similis.
W & SE South Africa (Saldanha & Langebaan Lagoon, Swartkops estuary)
N: 2
(153) F: 2,4-2,2; M: 1,85-1,8; {F: 2,20-2,40; M: 1,80-1,85}
Rem.: Species closely related to Tortanus recticauda (Giesbrecht, 1889), from the Red Sea.
Last update : 03/12/2020
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2023. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed December 05, 2023]

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