Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Aetideidae ( Family )
            Aetideopsis ( Genus )
Aetideopsis retusa  Grice & Hulsemann, 1967   (F,M)
Ref.:
Grice & Hulsemann, 1967 (p.22, Descr.F, figs.F); Wheeler, 1970 (p.10, fig.F); Bradford & Jillett, 1980 (p.19); Markhaseva, 1996 (p.37, Descr.M, figs.F,M)
Species Aetideopsis retusa - Plate 1 of morphological figuresissued from : E.L. Markhaseva in Trudy Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.40, Fig.24].
Female; From different specimens; Gn: genital segment; RiP1: endopodite of first leg.
Ce, Th5 & Abd: from 44°25'N, 149°10'E; Gn: from 44°20'N, 150°33'E; other figures: from 45°43'N, 153°20'E.


Species Aetideopsis retusa - Plate 2 of morphological figuresissued from : E.L. Markhaseva in Trudy Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.41, Fig.25].
Female (from 45°43'N, 153°20'E) & Male (from 43°52'N, 149°49'E).
R: rostrum (anterior); P.md: mandibular palp


Species Aetideopsis retusa - Plate 3 of morphological figuresissued from : G.D. Grice & K. Huisemann in Proc. U.S. natn. Mus., 1967, 122 (3583). [p.49, Figs.39-45].
Female (from Indian Ocean): 39, habitus (dorsal); 40, idem (lateral right side); 41, A2; 42, Mx2; 43, Mxp; 44, P1; 45, P2 (terminal spine on exopod broken off).

Nota: Head and 1st thoracic segment incompletely separate, 4th and 5th separate.Rostrum distinct, rami separated by deep invagination. Frontal organ prominent and visible in dorsal view. A1 exceeds furca by last 2 segments.


Species Aetideopsis retusa - Plate 4 of morphological figuresIssued from : E.H. Wheeler, Jr in Smiths. Contr. Zool., 1970, 55. [p.20, Figs.29-30].
Female (from 37°12'N, 69°39W): 29, habitus (dorsal); 30, forehead (ventral view).


Species Aetideopsis retusa - Plate 5 of morphological figuresAetideopsis retusa female:
1 - Endopod of P1 with external lobe.
2 - Posterior corners of last thoracic segment not wing-like, not divergent (dorsal view). Genital segment (dorsal view) barrel-like without lateral swellings.
3 - Crest absent. 1st and 2nd external spines of exopod segments 1 and 2 of P1 exceeding base of next spine.
4 - Endopod of P2 2-segmented (though separartion between segments may be incomplete). Points of last thioracic segment reaching the midlength of geniral segment (or exceeding it).
5 - Anterior part of cephalon (lateral view) fairly smoothly transforming into rostrum, not prominent over base of rostrum.
6 -Rostrum well developed, rami not close-spaced slightly divergent.
7 -Proximal part of Mxp protopodite (externally) with well visible projection.
8 - Endopodal segment 2 of Md with 9 (8 terminal and 1 posterior) setae. A1 as long as or longer than body. Body length < 3.0 mm.


Species Aetideopsis retusa - Plate 6 of morphological figuresAetideopsis retusa male:
1 - Points of last thoracic segment exceeding posterior border of urosomal segment 1.
2 - Endopod of P1 with external lobe.
3 - Rostral rami spaced closely, slightly divergent.
4 - Genital segment no more than half shorter than urosomal segment 2. Body length < 3.0 mm.

Compl. Ref.:
C.-Y. Lee & al., 2009 (p.151, Tab.2)
NZ: 5

Distribution map of Aetideopsis retusa by geographical zones
Species Aetideopsis retusa - Distribution map 2
Chart of 1996
Loc:
NW Sargasso Sea (in Wheeler, 1970), SW Indian, NW Taiwan, Kuril-Kamchatka & Aleutian Trenchs.

Type locality: 10°07'S, 64°27'E.
N: 5
Lg.:
(37) F: 2,8-1,96; M: 2,7-2,25; (67) F: 1,96; (203) F: 2,25; {F: 1,96-2,80; M: 2,25-2,70}
Rem.: bathy & abyssopelagic.
Last update : 07/01/2020
    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 November 21, 2024]

© copyright 2005-2024 Sorbonne University, CNRS

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

 

Version française
English version

 

Search

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