Species Card of Copepod
Calanoida ( Order )
    Arietelloidea ( Superfamily )
        Augaptilidae ( Family )
            Haloptilus ( Genus )
Haloptilus caribbeanensis  Park, 1970   (F)
Syn.: Haloptilus furcatus : Grice, 1969 a (p.454, figs.F)
Park, 1970 (p.478, 537, Descr.F, figs.F); Matthews, 1972 (p.49); Soh & al., 1999 a (p.130, Redescr.F, figs.F, Rem.)
Species Haloptilus caribbeanensis - Plate 1 of morphological figuresIssued from : T. S. Park in Bull. Mar. Sc., 1970, 20 (2). [p.538, Figs.356-364].
Female (from Caribbean Sea): 356, habitus (dorsal); 357, urosome (dorsal); 358, idem (lateral right side); 359, forehead (lateral); 360, idem (ventral); 361, A2; 362, Md; 363, Md (cutting edge); 364, Mx1.

Nota: Head and 1st thoracic segment separate, 4th and 5th fused.
Prosome about 3 times length of urosome.
Forehead in dorsal view broadly rounded without a distinct projection.
Rostrum consisting of 2 slender filaments.
A1 reaching about end of caudal ramus.
Md: cutting edge with 7 teeth of different shape and size.
Mx1 with 5 setae on basis; 4+5 setae on endopod; 11 setae on exopod.
Genital segment slightly shorter than the following three combined.
Caudal ramus about 2.5 times as long as wide.
Exopod of A2 8-segmented, first seven segments each with 1 seta and last with 4 setae. Mx1 with 5 setae on basis; 4 + 5 on endopod; exopod with 11 setae.

Species Haloptilus caribbeanensis - Plate 2 of morphological figuresIssued from : T. S. Park in Bull. Mar. Sc., 1970, 20 (2). [p.539, Figs.365-371];
Female: 365, Mx2; 366, Mxp; 367, P1 (anterior); 368, P2 (anterior); 369, P3 (anterior); 370, P4 (anterior); 371, P5 (anterior).

Nota: P1 with endopod 2-segmented and exopod 3-segmented; 1st external spine of exopod much longer than the following three spines of equal length.

Species Haloptilus caribbeanensis - Plate 3 of morphological figuresissued from : G.D. Grice in Bull. mar. Sc., 1969, 19 (2). [p.452, Figs.58-67]. As Haloptilus furcatus.
Female (from G. of mexico): 58, habitus (dorsal); 59, forehead (lateral); 60, idem (ventral); 61, urosome (lateral left side); 62, Md (cutting edge of mandibular blade); 63, Mx1; 64, P1; 65, P3; 66, P4; 67, P5.

Species Haloptilus caribbeanensis - Plate 4 of morphological figuresissued from : H.Y. Soh, H.-L. Suh & S. Ohtsuka in J. Fish. Sci. Tech., 1999, 2 (2). [p.130, Fig.1].
Female (from Suruga Bay): A-B, habitus (dorsal and lateral, respectively); C, forehead (lateral); D, A2; E, Md; F, Md (mandibular cutting edge); G, Mx1.

Nota: Rostrum well developed, with 2 long filaments.
A1 reaching about end of caudal rami; ancestral segments I to III and XXVII to XXVIII completely fused.
A2 with coxa bearing 1 inner seta; basis with 2 setae of unequal length; endopod about 1.9 times as long as exopod, 1st endopodal segment with 2 setae of unequal length nearly twice as long as 2nd segment carrying 9 setae on inner lobe and 7 setae on outer lobe; exopod 8-segmented and segmental fusion: I-1, II-1, III-1, IV-1, V-1, VI-1, VII-1, VIII-X-4.
Md with coxal gnathobase bearing 5 subequal teeth and strongly chitinized dorsalmost seta; 1st and 2nd central teeth elongate; mandibular palp lacking basal seta, with both rami nearly equal in length; endopod 2-segmented, 1st endopodal segment with 2 setae, 2nd segment with 10 setae; exopod 5-segmented with setation formula 1, 1, 1, 1, 2.
Mx1with 9 spiniform setae on praecoxal arthrite; coxa with 2 setae on endite and 9 setae on epipodite; basis bearing 4 and 5 setae on 1st and 2nd endites, respectively; endopod with 2 free segments, 1st segment with 4 setae, 2nd segment with 1 subterminal seta and 4 terminal setae; exopod very elongate, with 11 setae.

Species Haloptilus caribbeanensis - Plate 5 of morphological figuresssued from : H.Y. Soh, H.-L. Suh & S. Ohtsuka in J. Fish. Sci. Tech., 1999, 2 (2). [p.131, Fig.2].
Female: A, Mx2, B, Mxp; C, P1; D, P2; E, P3; F, P4; G, P5.
Arrowheads indicate positions of gland openings.

Nota: Mx2 with praecoxa and coxa incompletely separate, proximal endite of praecoxa with 3 setae and 1 vestigial elements, distal endite with 3 setae; coxa with endites each bearing 3 setae; basis with 2 setae; endopod 4-segmented with setal formula 3, 2, 2.
Mxp syncoxa with 1st to 4th endites bearing 0, 2, 3, 3, 3 setae, respectively; basis with 2 medial setae, armed with minute spinules or setules along inner margin; endopod -5-segmented plus 1st endopodal segment completely incorporatd into basis; setation formula of endopod 2, 4, 4, 3, 3, 4.

NZ: 2

Distribution map of Haloptilus caribbeanensis by geographical zones
Caribbean Sea, Gulf of Mexico, Japan (Suruga Bay)
N: 4
(88) F: 6,42; (225) F: 5,83; (1117) F: 6,15; {F: 5,83-6,42}
Rem.: bathypelagic. Known to occur at a depth between 980 and 1900 m (Matthews, 1972).
For Park (1970, p.541) the female described is identical with that which Grice (1969) reported as H. furcatus; the specimen agrees with the description of H. furcatus from Sars (1924-1925) in the habitus and the anatomy of the mouthparts, particulary of the Md, but obviously differs from it in the following characters: the forehead is conspicuously produced, the endopod of P1 is 2-segmented instead of 3-segmented.
The specimen from Suruga bayslightly differs from the specimens of the Caribbean Sea and Gulf of Mexico: the former has 5 teeth on mandibular cutting edge, but the latter 6 teeth. Three inner setae on the right 3rd endopodal segment of P5 are considered as abnormal, since the Suruga's specimen bears 2 inner setae on the left 3rd enopodal segment of P5 as in most augaptilids.
Last update : 06/01/2015
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed April 22, 2024]

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