Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Phaennidae ( Family )
            Cornucalanus ( Genus )
Cornucalanus chelifer  (Thompson, 1903)   (F,M)
Syn.: Scolecithrix chelifer I.C. Thompson, 1903 a (p.21, Descr. juv.M, figs. juv.M); Farran, 1905 (p.36, figs.F); Pearson, 1906 (p.19);
Cornucalanus magnus Wolfenden, 1905 a (p.21); 1911 (p.281, figs.F,M); Hardy & Gunther, 1935 (1936) (p.163, Rem.);
Onchocalanus chelifer : van Breemen,1908 a (p.65);
? Cornucalanus chelifer : Sewell, 1929 (p.177, figs. Juv.M);
Ref.:
Farran, 1908 b (p.49, Rem.); With, 1915 (p.222, figs.F,M); Lysholm & Nordgaard, 1921 (p.19); Sars, 1925 (p.151, figs.F); Rose, 1929 (p.26); Wilson, 1932 a (p.74, figs.F,M); Rose, 1933 a (p.138, figs.F, Rem.M); Jespersen, 1934 (p.84, fig.21); 1940 (p.35); Lysholm & al., 1945 (p.25); Vervoort, 1957 (p.90, 91, 92, Rem.); Tanaka, 1960 a (p.121, figs. juv.M); Paiva, 1963 (p.44, fig.M); Vervoort, 1965 (p.33, Rem.); Owre & Foyo, 1967 (p.58, figs.F,M); Park, 1983 a (p.352, figs.F,M, Rem.); Tanaka & Omori, 1992 (p.257, figs.F); Bradford & al., 1983 (p.61, figs.F,M); Chihara & Murano, 1997 (p.853, Pl.139: F); Bradford-Grieve & al., 1999 (p.880, 929, figs.F,M); G. Harding, 2004 (p.41, figs.F,M); Boxshall & Halsey, 2004 (p.159, fig.F); Vives & Shmeleva, 2007 (p.683, figs.F,M, Rem.)
Species Cornucalanus chelifer - Plate 1 of morphological figuresissued from : J.M. Bradford, L. Haakonssen & J.B. Jillett in Mem. N.Z. Oceanogr. Inst., 1983, 90. [p.66, Fig.36].
Female: A, habitus (lateral right side); B, Mx2; C, Mxp;, D, P5.

Male: E, habitus (lateral right side); F, Mx2; G, P5.


Species Cornucalanus chelifer - Plate 2 of morphological figuresissued from : T. Park in Antarct. Res. Ser. Washington, 1983, 39 (5). [p.357, Fig.25].
Male: a, habitus (dorsal); b, idem (lateral left side); c, last thoracic segments and urosome (lateral left side); d, forehead (lateral); e, Rostrum; f, A2; g, Md; h, Mx1.


Species Cornucalanus chelifer - Plate 3 of morphological figuresissued from : T. Park in Antarct. Res. Ser. Washington, 1983, 39 (5). [p.358, Fig.26].
Male: a, Mx2; b, Mxp; c, basipod of P4 (anterior); d, proximal part of P5 (anterior); e, P5 (posterior).


Species Cornucalanus chelifer - Plate 4 of morphological figuresissued from : T. Park in Antarct. Res. Ser. Washington, 1983, 39 (5). [p.355, Fig.23].
Female: a, habitus (dorsal); b, idem (lateral left side); c, last thoracic segments and urosome (lateral left side); d, forehead (lateral); e, A2; f, Md; g, Mx1; h, Mx2.


Species Cornucalanus chelifer - Plate 5 of morphological figuresissued from : T. Park in Antarct. Res. Ser. Washington, 1983, 39 (5). [p.356, Fig.24].
Female: a, Mxp; b, distal part of Mxp; c, P1 (anterior); d, P2 (posterior); e, P3 (posterior); f, P4 (posterior); g, P5 (posterior).


Species Cornucalanus chelifer - Plate 6 of morphological figuresissued from : O. Tanaka & M. Omori in Publs Seto Mar. Biol. Lab., 1992,35 (4/5). [p.257, Fig.2, a-c].
Female (from Izu region, Japan): a, forehead (lateral); b, last thoracic segment and urosome (lateral left side); c, P5.

Nota: P5 with a single terminal spine and patches of hairs.


Species Cornucalanus chelifer - Plate 7 of morphological figuresIssued from : G.O. Sars in Résult. Camp. Scient. Prince Albert I, 69, pls.1-127 (1924). [Pl.WLII, figs.1-14].
Female: 1, habitus (dorsal); 2, idem (lateral left side); 2a, distal segments of A1; 3, forehead (lateral); 4, rostrum (frontal view); 5, A2; 6, Md; 7, Mx1; 8, Mx2; 9, Mxp; 10, P1; 11, P2; 12, P3; 13, P4; 14, P5.


Species Cornucalanus chelifer - Plate 8 of morphological figuresissued from : G.P. Farran in Ann. Rep. Fish. Brch., Ireland, 1902-1903, II, App. 2, 1905. [Plate VII, Figs.18-19]. As Scolecithrix chelifer
Female (from W Ireland): 18, head (ventral); 18, Mx2.


Species Cornucalanus chelifer - Plate 9 of morphological figuresissued from : R.N. Wolfenden in Die Marinen Copepoden der Deutschen Südpolar-Expedition 1901-1903, 1911. [p.282, Fig.45]. As Cornucalanus magnus.
Male: P5.


Species Cornucalanus chelifer - Plate 10 of morphological figuresissued from : R.N. Wolfenden in Die Marinen Copepoden der Deutschen Südpolar-Expedition 1901-1903, 1911. [Pl.XXXII, Figs.1-10]. As Cornucalanus magnus.
Female: 1, habitus (dorsal); 2, Mx2; 3, Mxp; 4, P1; 5, P2; 6, P4; 7, forehead (lateral); 8, P5; 9, posterior part cephalothorax and urosome (lateral).

Male: 10, forehead (lateral).


Species Cornucalanus chelifer - Plate 11 of morphological figuresissued from : G. Harding in Key to the adullt pelagic calanoid copepods found over the continental shelf of the Canadian Atlantic coast. Bedford Inst. Oceanogr., Dartmouth, Nova Scotia, 2004. [p.41].
Female & Male.

Female with a median frontal spine foreward (arrowed). Both Mx2 and Mxp have two stout claw-like setae (arrowed). P5 uniramous, small, 3-segmented.
Male: P5 uniramous, small, 4-segmented.


Species Cornucalanus chelifer - Plate 12 of morphological figuresissued from : C. With in The Danish Ingolf-Expedition, Copepoda I, 1915, III, 4. [Pl. VIII, Fig. 15, a-c].
Female (from 61°30'N, 17°08'W): a, head (lateral); b, terminal setae of left P4; c, left P5.


Species Cornucalanus chelifer - Plate 13 of morphological figuresissued from : C. With in The Danish Ingolf-Expedition, Copepoda I, 1915, III, 4. [Pl. VII, Fig. 4, e, d].
Female: e, labrum (oral view); d, serrula 6-dentata.


Species Cornucalanus chelifer - Plate 14 of morphological figuresissued from : C. With in The Danish Ingolf-Expedition, Copepoda I, 1915, III, 4. [Pl. VII, Fig. 4, a-c].
Female: a, corner of last thoracic segment and urosome (lateral); b, left P4 (posterior view); c, right P5.


Species Cornucalanus chelifer - Plate 15 of morphological figuresissued from : C. With in The Danish Ingolf-Expedition, Copepoda I, 1915, III, 4. [Pl. VIII, Fig. 15, d, e].
Male: d, forehead (lateral); e, P5 (anterior view).


Species Cornucalanus chelifer - Plate 16 of morphological figuresissued from : C. With in The Danish Ingolf-Expedition, Copepoda I, 1915, III, 4. [Pl. VII, Fig. 15, f, g].
Male: f, urosome (lateral); g, left P5 (3rd outer segment).


Species Cornucalanus chelifer - Plate 17 of morphological figuresissued from : H.B. Owre & M. Foyo in Fauna Caribaea, 1, Crustacea, 1: Copepoda. Copepods of the Florida Current. [p.58, Figs.365-369].
Female: 365, habitus (lateral); 366, rostrum.

Male: 367, P5.


Species Cornucalanus chelifer - Plate 18 of morphological figuresissued from : H.B. Owre & M. Foyo in Fauna Caribaea, 1, Crustacea, 1: Copepoda. Copepods of the Florida Current. [p.24, Fig.101].
Male: Mx2.


Species Cornucalanus chelifer - Plate 19 of morphological figuresissued from : H.B. Owre & M. Foyo in Fauna Caribaea, 1, Crustacea, 1: Copepoda. Copepods of the Florida Current. [p.58, Figs.370, 371].
Female: 371, P5.

Male: 370, Mx2.


Species Cornucalanus chelifer - Plate 20 of morphological figuresissued from : H.B. Owre & M. Foyo in Fauna Caribaea, 1, Crustacea, 1: Copepoda. Copepods of the Florida Current. [p.25, Fig.110].
Female: Mxp.


Species Cornucalanus chelifer - Plate 21 of morphological figuresIssued from : O. Tanaka in Spec. Publs. Seto mar. biol. Lab., 1960, VIII (1). [p.121, Fig.98].
Immature Male Stage V (from Suruga Bay, Japan): a, forehead (lateral); b, lest thoracic segment and two first abdominal segments (lateral); c, Mx2; d, Mxp; e, P5.
Body size: 5.33 mm.

Nota: Sewell's immature specimen male taken from the Indian Ocean (measuring 5.4 mm) has no cephalic spine; the P5 legs is of about equal lengths. As a general rule, the immarure male has a general resemblance to the adult female. Sewell describes that the general form of the body closely resembles the figure of Cornucalanus magnus Wolfenden.

Compl. Ref.:
Sewell, 1948 (p.384, 501, 521, 526, 527); C.B. Wilson, 1950 (p.192); Grice, 1963 a (p.495); Grice & Hulsemann, 1967 (p.16); 1968 (tab.2); Shih & al., 1971 (p.43); Björnberg, 1973 (p.331, 385); Roe, 1972 (p.277, tabl.1, tabl.2); Deevey & Brooks, 1977 (p.256, tab.2, Station "S"); Vives, 1982 (p.291); Tremblay & Anderson, 1984 (p.5); Roe, 1984 (p.357); Razouls & al., 2000 (p.343, tab. 5, Appendix); Holmes, 2001 (p.55); Gaard & al., 2008 (p.59, Table 1, N Mid-Atlantic Ridge); Galbraith, 2009 (pers. comm.); Park & Ferrari, 2009 (p.143, Table 4, 7: common deep water species, Appendix 1, biogeography)
NZ: 16

Distribution map of Cornucalanus chelifer by geographical zones
Loc:
Antarct. (Peninsula, SW Atlant., Indian, SE Pacif.), South Georgia, sub-Antarct. (Indian, SW & SE Pacif.), South Africa, off E Tristan da Cunha, G. of Guinea (off Ghana), Cape Verde Is., off Mauritania, Canary Is., off E Madeira, off W Cape Finisterre, W Bay of Biscay, Azores, Florida, off Bermuda: Station "S" (32°10'N, 64°30'W), Sargasso Sea, Woods Hole, Nova Scotia, S Strait of Davis, Iceland, SW Faroe Is., W Ireland, Denmark Strait, Indian (off S Laccadive Is.), Indonesia-Malaysia, Philippines, Japan (Izu region), Kuril-Kamchatka, British Columbia (rare), New Zealand, off Juan Fernandez Is., Chile (N & S)
N: 37
Lg.:
(1) F: 8,4; (7) F: 8,7; M: 6,17; (9) F: 7,6; M: 6,3; (10) F: 8-7,8; (15) F: 8,25-7,41; M: 6,66-6,41; (16) M: 5,5; (25) M: 4,85; (45) F: 9-8; M: 7-6,5; (73) M: 5,84-5,82; (199) F: 7,2-6,23; (866) F: 6-8,3; M: 6-6,7; (867) F: 7,2-7,6; {F: 6,00-9,00; M: 4,85-7,00};
For G. Harding (2004, p.41) the total body length is about 8.4 mm (Female) and about 8 mm (Male).
Rem.: meso-bathypelagic. After Pearson (1906, p.19): vertical range down to 2.200 m at 53°58'N, 12°28'W. Sargasso Sea: 500-1500 m (Deevey & Brooks, 1977, station "S");
For Vervoort (1957, p.92) the female is distinguished by the presence of a short cephalic spine; the claws on the terminal portion of Mxp both are the same type; the basal part has a row of widely spaced, coarse spinules, the apical portion is covered with fine spinules.After Tanaka (1960 a, p.122) the immature male described and figured by Sewell is not identical with C. chelifer
Concerning males see remarks to C. indicus from Tanaka & Omori (1992, p.260-261).
Last update : 10/05/2016
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