Species Card of Copepod
Cyclopoida ( Order )
    Corycaeidae ( Family )
        Corycaeus ( Genus )
            Ditrichocorycaeus ( Sub-Genus )
Corycaeus (Ditrichocorycaeus) lubbocki  Giesbrecht, 1891   (F,M)
Syn.: Corycäus lubbocki Giesbrecht, 1891; 1892 (p.660, 674, figs.F);
Corycaeus farrani : Früchtl, 1924 b (p.96, figs.F);
no C. lubbocki : Farran, 1936 a (p.137);
? no C (Ditrichocorycaeus) lubbocki : F. Dahl, 1894 (p.71); M. Dahl, 1912 (p.64, figs.F,M); Dakin & Colefax, 1940 (p.115, figs.M);
Ditrichocorycaeus lubbocki: Dessier, 1983 (p.89, Tableau 1, Rem., %); Binet, 1984 (tab.3); 1985 (p.85, tab.3); Boxshall & Halsey, 2004 (p.495); Vives & Shmeleva, 2010 (p.216, figs.F,M, Rem.); Wi & al., 2013 (p.427, figs.F,M, Rem.)
Thompson & Scott, 1903 (p.240, 285); A. Scott, 1909 (p.250, Rem.); Wilson, 1942 a (p.181, no fig.F); Sewell, 1947 (p.279, 281, figs.F, Rem.); Tanaka, 1957 (p.90, Rem.); Chen & al., 1974 (p.59, figs.F); Bradford, 1978 (p.140: Rem.); Zheng & al., 1982 (p.144, figs.F); Al-Yamani & Prusova, 2003 (p.139, figs.F); Al-Yamani & al., 2011 (p.113, 116, figs.F)
Species Corycaeus (Ditrichocorycaeus) lubbocki - Plate 1 of morphological figuresissued from : R.B.S. Sewell in The John Murray Expedition, 1933-34, Scientific Reports, VIII (1), 1947. [p.283, Fig.71].
Female (from S coast of Arabia): A, last thoracic seggment and urosome (lateral right side); B, A2; C, P1; D, P2; E, P3; F, P4.

Nota: Proportional lengths of the anterior and posterior regions of the body as 56 to 44.
Proportional lengths of the various segments of the body (cephalon to caudal rami) as 364:69:33:47:59:18:153:62:195 = 1000.
Head and 1st thoracic segment separate. 3rd thoracic segmenti produced in a long stout spinous process that extends to half the length of the genital segment; 4th is produced backwards and ends in a sharp spine. Genital segment is produced in a rounded eminence at the antero-ventral region, without any spinous projection in this region, such as is described and figured by M. Dahl, but agrees with the figures given by Giesbrecht (1892, fig.57) and Früchtl (1924, fig.72).

Species Corycaeus (Ditrichocorycaeus) lubbocki - Plate 2 of morphological figuresissued from : Q.-c Chen & S.-z. Zhang & C.-s. Zhu in Studia Marina Sinica, 1974, 9. [Pl.18, Figs.13-16].
Female (from China Seas): 13, habitus (dorsal); 14, idem (lateral left side); 15, A2; 16, P4.

Species Corycaeus (Ditrichocorycaeus) lubbocki - Plate 3 of morphological figuresIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892. Atlas von 54 Tafeln. [Taf.51, Figs.57, 58]. As Corycäus lubbockii.
Female: 57, habitus (lateral); idem (dorsal).

Species Corycaeus (Ditrichocorycaeus) lubbocki - Plate 4 of morphological figuresissued from : F.Y. Al-Yamani & I. Prusova in Common Copepods Northwestern Arabian Gulf : Identification Guide. Kuwait Institute for Scientific Research, 2003. [p.138, Fig.53].
Female: A, habitus (dorsal); B, idem (lateralright side); C, urosome (dorsal); D, idem (lateral left side); E, A2; F, P4.

Proportional lengths of urosomites and caudal rami 38:17:47.
A2 with marginal spine of basipod segment 2 about 3 times shorter than that of basipod 1.

Species Corycaeus (Ditrichocorycaeus) lubbocki - Plate 5 of morphological figuresissued from : Z. Zheng, S. Li, S.J. Li & B. Chen inMarine planktonic copepods in Chinese waters. Shanghai Sc. Techn. Press, 1982 [p.144, Fig.90].
Female: a-b, habitus (dorsal and lateral, respectively); c, A2; d, distal spines of exopod of P2; e, P4.
Scale bars in mm.

Species Corycaeus (Ditrichocorycaeus) lubbocki - Plate 6 of morphological figuresissued from : Y. Al-Yamani, V. Skryabin, A. Gubanova, S. khvorov & I. Prusova in Marine Zooplankton Practical Guide for the Northwestern Arabian Gulf, 2, 2011. [p.116, Fig.264].
Female (from Kuwait): a-b, habitus (dorsal and left lateral, respectively).

Nota: Prosome less than twice as long as urosome.
Prosome 1.7 times urosome.
Genital segment without ventral hook.
Caudal rami longer than anal somite.

Species Corycaeus (Ditrichocorycaeus) lubbocki - Plate 7 of morphological figuresIssued from : J.H. Wi, D.H. Kim & H.Y. Soh Ocean Sci. J., 2013, 48 (4). [p.428, Fig.5]. As Ditrichocorycaeus lubbocki.
Female (from of W Jeju Is.): A-B, habitus (dorsal and lateral, respectively); C, genital double-somite and anal somite (lateral); D, P5.
Scale bars in µm.

Species Corycaeus (Ditrichocorycaeus) lubbocki - Plate 8 of morphological figuresIssued from : J.H. Wi, D.H. Kim & H.Y. Soh Ocean Sci. J., 2013, 48 (4). [p.429, Fig.6]. As Ditrichocorycaeus lubbocki.
Female: A, A2; B, Md; C, Mx1; D, Mxp; E, P1; F, P2; G, P3; H, P4.
Scale bars in µm.

Species Corycaeus (Ditrichocorycaeus) lubbocki - Plate 9 of morphological figuresIssued from : J.H. Wi, D.H. Kim & H.Y. Soh Ocean Sci. J., 2013, 48 (4). [p.431, Fig.7]. As Ditrichocorycaeus lubbocki.
Male: A-B, habitus (dorsal and lateral, respectively); C, A2; D, Mxp; E, P6; F, exopod of P1; G, exopod of P2; H, exopod of P3; I, P4.
Scale bars in µm.

Compl. Ref.:
Sewell, 1948 (p.409, 420, 434); C.B. Wilson, 1950 (p.195); Delalo, 1966 (p.72); Kovalev & Shmeleva, 1982 (p.86); Greze & al., 1985 (p.8); Othman & al., 1990 (p.561, 564, Table 1);Shih & Young, 1995 (p.76); Lo & al., 2004 (p.89, tab.1)
NZ: 8 + 3 doubtful

Distribution map of Corycaeus (Ditrichocorycaeus) lubbocki by geographical zones
Brazil (in C.B. Wilson, 1950), Chesapeake Bay (in Wilson, 1932, p.42), Medit. (Alboran Sea, Ionian Sea), Red Sea, Arabia (S coast), Arabian Sea, Arabian Gulf (Kuwait), Madagascar (Nosy Bé), Sri Lanka, Indonesia-Malaysia, Philippines, Viet-Nam, Hong Kong, China Seas (East China Sea, South China Sea), Taiwan, Mienhua Canyon, S Korea (off W Jeju Is.), off Hawaii, Australia (G. of Carpentaria), New Caledonia, Panama, Bering Sea (in C.B. Wilson, 1950)
N: 28
(11) F: 1,033; (46) F: 0,95; (109) F: 0,95-0,87; (937) F: 0,93-0,94; (1023) F: 0,75; (1152)* F: 0,98-1,03; M: 0,80-0,82; {F: 0,75-1,03}
* Total body length in lateral view.
Rem.: Epiplanktonic.
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 presence of this species in the extreme north Pacific is surprising, just like the locality records in the Mediterranean Sea, Brazil and in the Chesapeake Bay.
According to Gurney (1927, p. 161) this form can be confused with C. brehmi.
Last update : 02/01/2015
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