Species Card of Copepod
Cyclopoida ( Order )
    Corycaeidae ( Family )
        Corycaeus ( Genus )
            Ditrichocorycaeus ( Sub-Genus )
Corycaeus (Ditrichocorycaeus) africanus  F. Dahl, 1894   (F,M)
Syn.: no Sewell,1947 (p.279, figs.F,M, Rem.: p.280-281)
Ditrichocorycaeus africanus : Boxshall & Halsey, 2004 (p.495); Vives & Shmeleva, 2010 (p.210, figs.F,M, Rem.)
Ref.:
F. Dahl, 1894 (p.71); M. Dahl, 1912 (p.62, figs.F,M); Klevenhusen, 1933 a (p.92, carte 38); Dakin & Colefax, 1933 (p.209); 1940 (p.115, figs.M); Sewell, 1948 (p.411); Marques, 1949 (p.26); 1951 (p.16); 1958 a (p.146); Tanaka, 1957 (p.90, Rem.); Marques, 1961 (p.47); Tanaka, 1964 (p.14, figs.M); Marques, 1966 (p.13, figs.F); Björnberg & al., 1981 (p.676, figs.F,M); Boxshall, 1998 (p.223);
Species Corycaeus (Ditrichocorycaeus) africanus - Plate 1 of morphological figuresissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.IX, Figs.24, 25].
Female: 24, habitus (dorsal); 25, idem (lateral left side).


Species Corycaeus (Ditrichocorycaeus) africanus - Plate 2 of morphological figuresissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.IX, Fig.29].
Female: 29, A2.


Species Corycaeus (Ditrichocorycaeus) africanus - Plate 3 of morphological figuresissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.IX, Fig.8].
Female: 8, P2 (distal part of exopod 3).


Species Corycaeus (Ditrichocorycaeus) africanus - Plate 4 of morphological figuresissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.IX, Fig.16].
Female: 16, P4.


Species Corycaeus (Ditrichocorycaeus) africanus - Plate 5 of morphological figuresissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.IX, Figs.26, 27, 28].
Male: 26, habitus (dorsal); 27, idem (lateral left side); 28, A2.


Species Corycaeus (Ditrichocorycaeus) africanus - Plate 6 of morphological figuresissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.IX, Fig.32].
Male: P1 (distal part of exopod 3)


Species Corycaeus (Ditrichocorycaeus) africanus - Plate 7 of morphological figures[B & H] Female: genital double-somite without knob-like process dorsally. Caudal rami 1.17 times longer than genital double-somite.

[V & S] Female: Posterior points of thoracic segment 3, in dorsal view, not reaching half genital segment. Basipodite 2 of P4 with the two setae divergent. Genital segment plus anal segment equal to caudal rami.
Male: Posterior points of thoracic segment 3, in dorsal view, shorter than 2/3 genital segment. Genital segment shorter than anal segment plus caudal rami. Genital segment length approximalely caudal rami.

Compl. Ref.:
Björnberg, 1963 (p.83, Rem.); De Decker, 1964 (p.15, 21, 28); Neto & Paiva, 1966 (p.33, Table III, annual cycle); Binet & al., 1972 (p.71); Bainbridge, 1972 (p.61, Appendix Table IV: seasonal abundance, Table V, VI, VII: abundance,); Palet, 1975 (p.660); Binet, 1979 (p.400); Dessier, 1979 (p.133, 202, 208); Kovalev & Shmeleva, 1982 (p.86); Greze & al., 1985 (p.8); Williams D. & al., 1988 (p.580)
NZ: 5 + 1 doubtful

Distribution map of Corycaeus (Ditrichocorycaeus) africanus by geographical zones
Loc:
South Africa (SE), Angola, Baia Farta, Congo, off Lagos, Ivorian shelf, Guinea Bissau, Dakar, Brazil, Venezuela, W Medit. (Alboran Sea), ? Madagascar (in Gaudy, 1967, p.88), NW India (Saurashtra coast), ? Australia (New South Wales, Great Barrier)
N: 20
Lg.:
(104) M: 1; (114) M: 0,9-0,87; (237) F: 1,2; M: 0,96; (321) F: 1,03-0,76; M: 0,89; (354) F: 1,04-0,95; M: 0,93-0,86; (433) M: 0,78; (618) F: 1,2-1,02; M: 1,11-0,9; (631) F: 1,04; 1,02; (666) F: 1,03-1,01; M: 0,93-0,87; (786) M: 1,11; {F: 0,76-1,20; M: 0,78-1,11}
Rem.: For Boxshall & Halsey (2004, p.491) the subgenus (Dahl, 1912) is considered as full generic status pending phylogenetic revision of the whole family at the generic level.
The identification of this form in SE Australia needs a confirmation.
Last update : 04/12/2020
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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 September 22, 2021]

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