Species Card of Copepod
Calanoida ( Order )
    Arietelloidea ( Superfamily )
        Augaptilidae ( Family )
            Euaugaptilus ( Genus )
Euaugaptilus angustus  (Sars, 1905)   (F,M)
Syn.: Augaptilus angustus Sars, 1905 c (p.10, Descr.F); Farran, 1908 b (p.77, Rem.F)
Ref.:
Sars, 1925 (p.281, figs.F,M); Sewell, 1932 (p.322); Rose, 1933 a (p.229, figs.F,M); Sewell, 1947 (p.197, 199, 201, 222, figs.F, Rem.); Tanaka, 1964 b (p.56, figs.F, Rem.); Vervoort, 1965 (p.140, Rem.); Matthews, 1972 (p.25, 27); Tanaka & Omori, 1974 (p.201, figs.F); Park, 1993 (p.27, figs.F, Rem.); Bradford-Grieve & al., 1999 (p.882, 940, figs.F,M); Vives & Shmeleva, 2007 (p.188, figs.F,M, Rem.); Matsuura & al., 2010 (p.2098, Table 4, fig.10: Mx2, Mxp)
Species Euaugaptilus angustus - Plate 1 of morphological figuresissued from : O. Tanaka in Publs Seto Mar. Biol. Lab., 1964, XII (1). [p.57, Fig.201].
Female: a, habitus (dorsal); b, forehead (left lateral side); c, rostrum (frontal view); d, last thoracic segment and urosome (left lateral side); e, urosome (ventral); f, A2; g, Md (mandibular palp and biting blade, separately); h, Mx2; i, P1; j, P5.
Nota: The urosome segments and furca are in the proportional lengths as 53:9:11:27 = 100.


Species Euaugaptilus angustus - Plate 2 of morphological figuresissued from : O. Tanaka & M. Omori in Publs Seto Mar. Biol. Lab., 1974, XXI (3/4). [p.202, Fig.4].
Female: a, Mx1.

Male: b, forehead (dorsal); c, last thoracic segment and urosome (dorsal); d, distal part of A1.
Nota: The urosome segments and furca are in the proportional lengths as 25:13:11:11:11:29. Left A1 modified.


Species Euaugaptilus angustus - Plate 3 of morphological figuresissued from : O. Tanaka & M. Omori in Publs Seto Mar. Biol. Lab., 1974, XXI (3/4). [p.200, Fig.3,a].
Female (from Izu region): a, mandibular teeth.


Species Euaugaptilus angustus - Plate 4 of morphological figuresIssued from : G.O. Sars in Résult. Camp. Scient. Prince Albert I, 69, pls.1-127 (1924). [Pl.XCI, figs.1-14].
Female: 1, habitus (dorsal); 2, idem (lateral left side); 3, rostral prominence (ventral view); 4, A2; 5, Md; 6, Mx1; 7, Mx2; 8, Mxp; 9, P1; 10, P3; 11, P5.

Male: 12, forehead (lateral); 13, P5; 14, posterior part of urosome (dorsal).


Species Euaugaptilus angustus - Plate 5 of morphological figuresissued from : R.B.S. Sewell in The John Murray Expedition, 1933-34, Scientific Reports, VIII (1), 1947. [p.224, Fig.60, E].
Female (from N Arabian Sea): E, Mx1.
Nota: The specimenn differs from that figured by Sars in that the 2nd basal segment of Mx1 on one side bears only 2 setae, whereas Sars (1925, fig.6) shows it as having 3. A gland opens on the anterior margin of inner lobe not far from the origin of the most anterior spine.


Species Euaugaptilus angustus - Plate 6 of morphological figuresissued from : T. Park in Biology of the Antarctic Seas, XXII. Antarct. Res. Ser., Washington, 58. [p.28, Fig.19].
Female: a, forehead (lateral); b, genital segment (lateral); c, A2; d, Md; e, Md (biting edge); f, Mx1; g, Mx2; h, Mxp.
Nota: Forehead (laterally) broadly round, with rostrum in the form of a round tubercle, without filaments


Species Euaugaptilus angustus - Plate 7 of morphological figuresissued from : T. Park in Biology of the Antarctic Seas, XXII. Antarct. Res. Ser., Washington, 58. [p.29, Fig.20].
Female: a-e, P1 to P5 (anterior views).


Species Euaugaptilus angustus - Plate 8 of morphological figuresissued from : H. Matsuura, S. Nishida & J. Nishikawa in Deep-Sea Res. II, 2010, 57. [p.2106, Fig.10, g-h].
From Sulu Sea: g, SEM image of button setae on Mx2 and Mxp; h, SEM image of mandible blade.
Nota: Mandible blade like a curved needle and with 4 spiniform teeth (Type-I).


Species Euaugaptilus angustus - Plate 9 of morphological figuresissued from : J.B.L. Matthews in Bull. Br. Mus. (Nat. Hist.) Zool., 1972, 24 (1). [p.25, Table 2].
Differences in setation of Mx1, according to previous descriptions.
Nota: Sewell mentioned 2 setae present on one side but drew 3, presumably from the other side.

Compl. Ref.:
Sewell, 1948 (p.331, 504, 522, 533, 547); C.B. Wilson, 1950 (p.204); De Decker & Mombeck, 1964 (p.12); Morris, 1970 (p.2301); Itoh, 1970 (tab.1); Roe, 1972 (p.277, tabl.1, tabl.2); Deevey & Brooks, 1977 (p.156, tab.2, Station "S"); Vives, 1982 (p.294); Kovalev & Shmeleva, 1982 (p.85); Roe, 1984 (p.359); Lozano Soldevilla & al., 1988 (p.60); Lapernat, 2000 (tabl.3, 4); Razouls & al., 2000 (p.343, Appendix); Holmes, 2001 (p.11); Lo & al., 2004 (p.89, tab.1); Fernandes, 2008 (p.465, Tabl.2); Galbraith, 2009 (pers. comm.); Park & Ferrari, 2009 (p.143, Table 5, Appendix 1, biogeography); Matsuura & al., 2010 (p.2098, Table 3, figs.7, 8, vertical distribution)
NZ: 14

Distribution map of Euaugaptilus angustus by geographical zones
Species Euaugaptilus angustus - Distribution map 4issued from : H. Matsuura, S. Nishida & J. Nishikawa in Deep-Sea Res. II, 2010, 57. [p.2104, Fig.7].
Vertical distribution of Euaugaptilus angustus in the Sulu Sea, compared with those in the Celebes Sea.
Loc:
sub-Antarct. (Australie S), Afr. S (E), off Liberia S, off Is. du Cap Vert NW, Canaries, off Maroc-Mauritanie, off Madère, off Portugal, off Cap Finisterre W, Açores, off Irlande W, off Bermuda: Station ‘’ S’’ (32°10’N, 64°30’W) Mer des Sargasses, Médit. W, Mer Arabe, Is. Laquedives, Indien, Bay of Bengal, Celebes and Sulu Seas, mers de (Chine East China Sea), (off Taiwan), Taiwan (N: Mienhua Canyon), Japon (Izu), Pacif. (tropical), off Hawaii N, Vancouver Is., Galapagos SW, Pâques Is. N, off Pérou
N: 21
Lg.:
(1) F: 7,9; (16) F: 6,1; (48) F: 4,66; (68) F: 7,83-5,91; M: 5,48; (69) F: 6,47; (199) F: 5,76-5,44; M: 5,12; {F: 5,76-7,90; M: 5,12-5,48}
Rem.: Meso-bathypelagic. Known to occur between 600 and 1400 m depth after Matthews (1972, p.27).
Sampling depth (sub-Antarct.) : 0-1000 m. Overall Depth Range in Sargasso Sea: 500-2000 m (Deevey & Brooks, 1977, Station "S");
For Park (1993, p.29) this species can be recognized by the round tubercular rostral process without filaments, the long A1, the presence of setae on each of the 8 exopodal segments of the A2, the absence of a basal spine on the mandibular gnathobase, and the presence of only 1 outer spine on the 3rd exopodal segment of P1.
For Itoh (1970 a, fig.2, from co-ordonates) the Itoh's index value from mandibular gnathobase = 2150.

In ''squamatus" Group after Matthews (1972, p.64) {See remarks in Euaugaptilus genus}.
Last update : 29/06/2014
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