Species Card of Copepod
Calanoida ( Order )
    Arietelloidea ( Superfamily )
        Augaptilidae ( Family )
            Euaugaptilus ( Genus )
Euaugaptilus graciloides  Brodsky, 1950   (F)
Brodsky, 1950 (1967) (p.381, figs.F, Rem.); Minoda, 1971 (p.41); Matthews, 1972 (p.32); Tanaka & Omori, 1974 (p.214, figs.F, Rem.)
Species Euaugaptilus graciloides - Plate 1 of morphological figuresissued from : O. Tanaka & M. Omori in Publs Seto Mar. Biol. Lab., 1974, XXI (3/4). [p.216, Fig.11].
Female: a, forehead (lateral); b, idem (dorsal, rostral filaments underneath); c, last thoracic segment and urosome (lateral left side); d, idem (dorsal); e, A2; f, Md; g, Mx1; h, Mx2; i, Mxp; j, P1; k, P2; l, P3; m, 3rd exopodal segment of P4; n, P5.
Nota: The urosome segments and furca are in the proportional lengths as 45:10:18:27 = 100. Prosome and urosome are in the proportional lengths as 73:27. A1 extends beyond the end of the furca by 4 segments
This species closely resembles E. gracilis, but is easily separated from it by the delicate rostral filaments and the absence of setae on the outer lobe in the Mx1.

Species Euaugaptilus graciloides - Plate 2 of morphological figuresissued from : O. Tanaka & M. Omori in Publs Seto Mar. Biol. Lab., 1974, XXI (3/4). [p.200, Fig.3,f].
Female: f, mandibular teeth.

Species Euaugaptilus graciloides - Plate 3 of morphological figuresIssued from : K.A. Brodskii in Calanoida of the Far Eastern Seas and Polar Basin of the USSR. Opred. Fauna SSSR, 1950, 35 (Israel Program for Scientific Translations, Jerusalem, 1967) [p.382, Fig.270].
Female (from NW Pacific): habitus (dorsal and lateral left side); M, Md (masticatory blade); Mx, Mx1 (masticatory edge); S1, P1; S5, P5.

Compl. Ref.:
Yamaguchi & al., 2002 (p.1007, tab.1); Ikeda & al., 2006 (p.1791, Table 2); Galbraith, 2009 (pers. comm.); Homma & al., 2011 (p.29, Table 3, abundance)
NZ: 3

Distribution map of Euaugaptilus graciloides by geographical zones
NW Pacif., Station Knot, Bering Sea, Japan (Izu, NE), Vancouver Is.
N: 6
(22) F: 6,4; (68) F: 6,7; (208) F: 6,5; {F: 6,40-6,70}
Rem.: bathy-abyssopelagic. Recorded at a depth between 1000 and 4000 m (Matthews, 1972).
For Brodsky, 1950 (1967) the species resembles E. gracilis Sars, but differs in the presence of lateral processes on the head and in structure of P5.

In ''affinis"" Group after Matthews (1972, p.64) {See remarks in Euaugaptilus genus}.
Last update : 03/01/2015
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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 May 25, 2024]

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Marine Planktonic Copepods

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