Corycaeus (Ditrichocorycaeus) africanus - Species Card

Corycaeus (Ditrichocorycaeus) africanus F. Dahl, 1894 (F,M)

Taxonomy

Order Cyclopoida

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Family Corycaeidae

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Genus Corycaeus

details list species for this Genus

Sub-Genus Ditrichocorycaeus

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Abbreviations or symbols

Synonymy

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.)

References

List of the studied authors

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);

Figures

Plate 1 issued 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 figures

Plate 2 issued 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 figures

Plate 3 issued 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 figures

Plate 4 issued 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 figures

Plate 5 issued 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 figures

Plate 6 issued 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)

Plate 7 [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.

Complementary References

List of the studied authors

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)

Distribution

NZ: 5 + 1 doubtful

Distribution map of Corycaeus (Ditrichocorycaeus) africanus by geographical zones

Distribution map of Corycaeus (Ditrichocorycaeus) africanus for the Zone Mediterranean Sea, Black Sea

Distribution map of Corycaeus (Ditrichocorycaeus) africanus for the Zone Indian Ocean

Localisations

Geographical glossary

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)

Quotations

N: 20

Dimensions (mm)

References of the authors concerning dimensions

(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}

Remarks

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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