Species Card of Copepod
Calanoida ( Order )
    Arietelloidea ( Superfamily )
        Augaptilidae ( Family )
            Euaugaptilus ( Genus )
Euaugaptilus marginatus  Tanaka, 1964   (F)
Syn.: Euaugaptilus longiantennalis Park, 1970 (p.478, 533, figs.F); Cummings, 1984 (p.177)
Tanaka, 1964 b (p.64, Descr.F, figs.F); Matthews, 1972 (p.36); Tanaka & Omori, 1974 (p.199, 200: fig.F)
Species Euaugaptilus marginatus - Plate 1 of morphological figuresissued from : O. Tanaka in Publs Seto Mar. Biol. Lab., 1964, XII (1). [p.65, Fig.205].
Female (from Sagami Bay): a, habitus (dorsal); b, forehead (left lateral side); c, last thoracic segment and urosome (left lateral side); d, urosome (ventral); e, A2; f, Md; g, Mx1; h, Mx2; i, Mxp; j, P1; j, P5.

Nota: Proportional lengths of cephalothorax to abdomen 72: 28.
Abdomen 3-segmented.
The abdominal segments and furca are in the proportional lengths as 55:12:13:20 = 100.
A1 25-segmented, exceeds the end of the furca by distal 8 segments.
Md: exopod as long as endopod; exopod with 5 marginal setae; cutting edge with 4 teeth, the anterior very strong.
Mx1: outer lobe with 3 long setae; exopod with 7 setae of which the terminal 2 are very long; 2nd basal segment with 3 setae; 3rd inner lobe with 1 seta; 1st inner lobe with 7 spines; endopod and 2nd inner lobe absent.
Mx2 slender with on the lobes 1 to 6 and endopod: 3setae and a small spine on the 1st lobe, 2 setae on the 2nd, 2 setae on the 3rd; 3 setae on the 4th; 2 setae on the 5th; 1 seta on the 6th; 7 setae on the endopod.
Mxp: 1st basal segment as long as the 2nd; the 2nd basal segment has a row of hair-like spines on the anterior margin.
P5 3-segmented exopod and endopod; the inner marginal spine of the 2nd exopodal segment short, extends a little beyond the base of the inner marginal seta of the 3rd exopodal segment.

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

Species Euaugaptilus marginatus - Plate 3 of morphological figuresIssued from : T. S. Park in Bull. Mar. Sc., 1970, 20 (2). [p.532, Figs.318-324]. As Euaugaptilus longiantennalis.
Female (from Caribbean Sea): 318, habitus (lateral left side)319, idem (dorsal); 320, head (ventral); 321, Md; 322, Mx1; 323, Mxp; 324, P5 (posterior);

Nota: Prosome about 4 times length of urosome.
Rostrum consisting of 2 slender filaments.
Genital segment as long as the rest of urosome.
Caudal ramus as long as anal segment.
Mandibular palp biramous, exopod carrying 4 setae and shorter than endopod.
Mx1 with 1 seta on 3rd inner lobe; 3 setae on basis; 7 setae on exopod; 6 setae on outer lobe; 2nd inner lobe and endopod missing.
Both rami of P5 3-segmented; 1st and 2nd exopodal segments without external spines.

Compl. Ref.:
Itoh, 1970 (tab.1); Guangshan & Honglin, 1984 (p.118, tab., Rem.: p.165); Shih & Young,1995 (p.68); Matsuura & al., 2010 (p.2098, Table 3, fig.8)
NZ: 5

Distribution map of Euaugaptilus marginatus by geographical zones
Caribbean Sea, G. of Mexico, Indonesia (Celebes Sea), China Seas (East China Sea), Taiwan, Japan (Izu), W Pacif. (equatorial)

Type locality: Sagami Bay (middle Japan).
N: 5
(69) F: 2,26; (88) F: 1,66; {F: 1,66-2,26}
Rem.: epi-mesopelagic. Obtained at depths between 100 and 450 m (Matthews, 1972).
The species closely resembles E. hecticus (Gisebrecht, 1889).
For Itoh (1970 a, fig.2, from co-ordonates) the Itoh's index value from mandibular gnathobase = 2450.

In ''squamatus" Group after Matthews (1972, p.64) {See remarks in Euaugaptilus genus}.
Last update : 05/01/2015
    to add your remark

 Any use of this site for a publication will be mentioned with the following reference :

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]

© copyright 2005-2024 Sorbonne University, CNRS

CNRS   Observatoire Océanologique de Banyuls sur Mer - Laboratoire Arago
Sorbonne Université


Version française
English version



On the WEB of CNRS


Marine Planktonic Copepods

Marine Planktonic Copepods


Imprimer Contact Accueil Plan du site Accès restreint Retour Une du Labo Imprimer Contact Plan du site Crédits Téléchargez les Plug-Ins