Species Card of Copepod
Calanoida ( Order )
    Eucalanoidea ( Superfamily )
        Eucalanidae ( Family )
            Eucalanus ( Genus )
Eucalanus spinifer  T. Scott, 1894   (F,M)
Syn.: Eucalanus elongatus hyalinus: Vervoort, 1963 b (p.88,, Rem.: in G. of Guinea)
Ref.:
T. Scott, 1894 b (p.29, figs.F); Giesbrecht & Schmeil, 1898 (p.20); Goetze, 2005 (p.2378, genetic, biogeography); Goetze & Bradford-Grieve, 2005 (p.60, figs.F,M, Rem., genetic and morphology )
Species Eucalanus spinifer - Plate 1 of morphological figuresissued from : E. Goetze & J. Bradford-Grieve in Progress in Oceanography, 2005, 65. [Fig.2, p.63].
Female (from 24°3'N, 156°33'W) : A, habitus (dorsal view); B, idem (lateral view); C, posterior prosome and urosome (dorsal view); D, idem (lateral view); E, labrum (lateral view); F, urosome (ventral view).
Nota: A1 assymmetrical, longer on the right side. Caudal rami are asymmetical, longest on the left.


Species Eucalanus spinifer - Plate 2 of morphological figuresissued from : E. Goetze & J. Bradford-Grieve in Progress in Oceanography, 2005, 65. [Fig.3, p.64].
Female (from 24°3'N, 156°33'W): A, left A1; B, right A1 (with ancestral segments 1-4, 10, 11, 22, 23, 27-28 labeled); C, right A2 (posterior surface); D, endopod segment 2 of A2 (posterior surface, with boundary between ancestral segments 2, 3 and 4 evident); E, endopod segment 2 of A2 (posterior surface); F, Md (mandibular gnathobase); G, Md (mandibular palp); H, setal array on distal part of left A1, compound segment 27-28.


Species Eucalanus spinifer - Plate 3 of morphological figuresissued from : E. Goetze & J. Bradford-Grieve in Progress in Oceanography, 2005, 65. [Fig.4, p.65].
Female (from 24°3'N, 156°33'W): A, Md (cutting edge); B, dem (right above; left below); C, right Mx1 (anterior surface); D, left Mx2 (posterior surface); E, right Mxp (posterior surface); F, patch of spinules on antero-distal surface of syncoxa of Mxp; G, P1 (left leg, anterior surface); H, 1st endopod segment of P1; I, 1st exopod segment of P1; J, large seta on proximal border of endopod segment 1.


Species Eucalanus spinifer - Plate 4 of morphological figuresissued from : E. Goetze & J. Bradford-Grieve in Progress in Oceanography, 2005, 65. [Fig.5, p.66].
Female (from 24°3'N, 156°33'W): A - C, P2 to P4 (posterior surface).


Species Eucalanus spinifer - Plate 5 of morphological figuresissued from : E. Goetze & J. Bradford-Grieve in Progress in Oceanography, 2005, 65. [Fig.9, p.73].
Male (from 28°12.42'N, 162°8.4'W): A-B, head (ventral and lateral, respectively); C-D, habitus (dorsal and lateral, respectively); E-F, urosome (dorsal and lateral, respectively).


Species Eucalanus spinifer - Plate 6 of morphological figuresissued from : E. Goetze & J. Bradford-Grieve in Progress in Oceanography, 2005, 65. [Fig.10, p.74].
Male (from 28°12.42'N, 162°8.4'W): A, left A1; B, right A1 (with ancestral segments 1, 2-4, 10-11, 12 and 20 labeled); C, left A2 (posterior surface); D, left Md (mandibular palp, anterior surface); E, right Md (mandibular gnathobase, from specimen from 27°55.78'S, 175°58'W); F, left Mx1 (posterior surface).


Species Eucalanus spinifer - Plate 7 of morphological figuresissued from : E. Goetze & J. Bradford-Grieve in Progress in Oceanography, 2005, 65. [Fig.7, p.68].
Species differences in the shape of the anterior portion of the female head in E. hyalinus s.s. and E. spinifer
A: head shape in lateral and ventral views of three individuals of each species.
B: ratio of height/width versus width of the anterior part of the head in both species.


Species Eucalanus spinifer - Plate 8 of morphological figuresissued from : E. Goetze & J. Bradford-Grieve in Progress in Oceanography, 2005, 65. [Fig.6, p.66].
Females: Cephalosome length (in mm) versus length (mm) of E. spiniferE. hyalinus s.s.
Seventy-one and thirty-one individuals are included of E. hyalinus and E. spinifer, respectively. Specimens collected at 20 locations, North and South Pacific, Indian Ocean.


Species Eucalanus spinifer - Plate 9 of morphological figuresissued from : E. Goetze & J. Bradford-Grieve in Progress in Oceanography, 2005, 65. [Fig.14, p.81].
Females: Caudal rami length in E. spinifer and E. hyalinus s.s.
A: longer side caudal ramus length (in micron) versus the the total length of the longer A1 (inmicron, segments 1-25 only).
B: caudal rami lengths, shorter versus longer sides.

Compl. Ref.:
? Onishchik, 1999 (p.76, figs.2, 3, 4, 5); Goetze & Ohman, 2010 (p.2110, Table 1, biogeography); Zizah & al., 2012 (p.79, Tableau I, Rem.: p.86); Peijnenburg & Goetze, 2013 (p.2765, genetic data)
NZ: 6 + 1 doubtful

Distribution map of Eucalanus spinifer by geographical zones
Species Eucalanus spinifer - Distribution map 2issued from : E. Goetze & J. Bradford-Grieve in Progress in Oceanography, 2005, 65. [Fig.12, p.77].
Geographic distributions of E. hyalinuss.s. and E. spinifer.
Solid black circles correspond to E. hyalinus s.s., open circles to E. spinifer, and grey circles to plankton tows in which the species co-occurred. Neotype specimens marked by + and x, respectively.
Original distribution of E. hyalinus largo sensu outlined, after Fleminger & Hulsemann (1973).
Loc:
Gulf of Guinea, Mauritania-Morocco, N Pacif. (N Hawaii), ? S Pacif. (NPFZ)
N: 5
Lg.:
(916) F: 5,42-6,81; M: 5,08; {F: 5,42-6,81; M: 5,08}
Rem.: no synonym of Eucalanus hyalinus s.s.
For Goetze & Bradford-Grieve (2005, p.81) the identification given by the majority of workers cannot be reliably assigned to E. spinifer or E. hyalinus s.s.
Last update : 03/12/2020
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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 October 18, 2021]

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