Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Aetideidae ( Family )
            Euchirella ( Genus )
Euchirella similis  Wolfenden, 1911   (F)
Ref.:
Wolfenden, 1911 (p.238, Descr.F, figs.F); Vervoort, 1957 (p.64); 1963 b (p.135: Rem.); Park, 1978 (p.155, figs.F); Bradford & Jillett, 1980 (p.43, figs.F, fig. 73, distribution chart); Vaupel Klein, 1980 (p.152); 1984 a (p.46, figs.F, Table II: characters); Markhaseva, 1996 (p.167, figs.F, ? M); Bradford-Grieve & al., 1999 (p.879, 921, figs.F); Park & Ferrari, 2009 (p.143, Table 5, Appendix 1, biogeography from Southern Ocean)
Species Euchirella similis - Plate 1 of morphological figuresissued from : T. Park in Antarctic Res. Ser. Washington, 1978, 27. [p.156, Fig.35].
Female: A, habitus (dorsal view); B, idem (lateral); C, forehead (lateral); D, distal part of metasome and urosome (dorsal view); E, idem (left side); F, idem (right side); G, genital segment (ventral view); H, A2.


Species Euchirella similis - Plate 2 of morphological figuresissued from : T. Park in Antarctic Res. Ser. Washington, 1978, 27. [p.157, Fig.36].
Female: A, Mx1; B, P1; C, P2; D, P3; E, coxae of P5 (posterior view). P1-3: legs (posterior view).


Species Euchirella similis - Plate 3 of morphological figuresissued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.169, Fig.130].
Female & Male (specimens from SE Pacif.). Ce: forehead (dorsal, and lateralleft and right, respectively); Re: exopod; CP4: spines of coxopod of P4.


Species Euchirella similis - Plate 4 of morphological figuresissued from : J.M. Bradford & J.B. Jillett in Mem. N.Z. Oceanogr. Inst., 86, 1980. [p.44, Fig.27].
Female: A, habitus (dorsal); B, idem (lateral right side); C, basipod 1 of P4.


Species Euchirella similis - Plate 5 of morphological figuresissued from : R.N. Wolfenden in Die Marinen Copepoden der Deutschen Südpolar-Expedition 1901-1903, 1911. [p.238, Fig.23].
Female: a, habitus (lateral, with spematophore); b, posterior part cephalothorax and urosome (dorsal); c-d, basipod segment of P4.


Species Euchirella similis - Plate 6 of morphological figuresissued from : R.N. Wolfenden in Die Marinen Copepoden der Deutschen Südpolar-Expedition 1901-1903, 1911. [Pl.XXVIII, Figs.1-2].
Female: 1, A2; 2, P2 (endiopod missing)


Species Euchirella similis - Plate 7 of morphological figuresissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.63, Fig.5, d].
Female: d, condition of the distal small seta on A1 segment 5.
Nota: modified, type II seta, with slightly widened distal part. (see Pseudochirella obesa p.63, fig.5,a)
Scale bar 0.05 mm.


Species Euchirella similis - Plate 8 of morphological figuresissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.76, Fig.14, j].
Female: j, arrangement of spinules on the lateral tubercle of endopod of P1.
Scale bar 0.067 mm.
Nota: Spinules of approximately equal size (as other Euchirella species) and arranged in a more or less regular row.


Species Euchirella similis - Plate 9 of morphological figuresissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.80, Fig.16, c, d].
Female: c, number, shape, and size denticles along the lateral edge od the terminal seta on exopdal segment 3 of P1; d, detail of the same seta.
Scale bar: 0.4 mm (c); 0.067 mm (d).


Species Euchirella similis - Plate 10 of morphological figuresEuchirella similis female:
1 - Crest absent.
2 - Genital segment slightly asymmetrical.
3 - Genital segment with large projection on the right side (dorsal view), left side without sweeling .
4 - Projection on the right of genital segment abruptly prominent (dorsal view). Coxopodite of P4 with 2-3 spines.
5 - Projection on genital segment is ear-like, arranged in its anterior half.


Species Euchirella similis - Plate 11 of morphological figuresIssued from : V.N. Andronov in Russian Acad. Sci. P.P. Shirshov Inst. Oceanol. Atlantic Branch, Kaliningrad, 2014. [p.85, Fig.22: 14]. Euchirella similis after Markhaseva, 1996.
Male P5.


Species Euchirella similis - Plate 12 of morphological figuresissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.66, Fig.7, c].
Euchirella similis c, A2 arrangements of spinules and hairs on the posterior edge of endopodite 2+3 (right appendage of medial view ): 4 spinules spinules in distal patch.


Species Euchirella similis - Plate 13 of morphological figuresissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.68, Fig.8, f].
Euchirella similis: Structure and setal armature of basipode 2 of Md (left appendage medial). No seta present.


Species Euchirella similis - Plate 14 of morphological figuresIssued from : J.C. von Vaupel Klein in Crustaceana, (Supplement) 9, 1984. [p.93, Table II].
Euchirella similis Female: Datamatrix stating observed states of characters from Table I (p.87-90) presently examined; nos. refer to the input nos. used in Table I (see to the family Aetideidae).


Species Euchirella similis - Plate 15 of morphological figuresIssued from : J.C. von Vaupel Klein in Crustaceana, (Supplement) 9, 1984. [p.93, Table II].
Datamatrix stating observed states of characters from Table I (p.87-90) presently examined; nos. refer to the input nos. used in Table I (see to the family Aetideidae).


Species Euchirella similis - Plate 16 of morphological figuresIssued from : J.C. von Vaupel Klein in Crustaceana, (Supplement) 9, 1984. [p.93, Table II].
Datamatrix stating observed states of characters from Table I (p.87-90) presently examined; nos. refer to the input nos. used in Table I (see to the family Aetideidae).

Compl. Ref.:
Sewell, 1948 (p.500); Unterüberbacher, 1964 (p.22); Grice & Hulsemann, 1968 (tab.2); Björnberg, 1973 (p.324, 386); Razouls & al., 2000 (p.343, tab. 3, Appendix); Schukat & al., 2013 (p.1, Table 1, 2, fig.2, respiration, ingestion);
NZ: 6

Distribution map of Euchirella similis by geographical zones
Species Euchirella similis - Distribution map 3Issued from : J.M. Bradford & J.B. Jillett in New Zealand Ocean. Inst. Memoir, 86, 1980. [p.88-89, Figs.65-67].
Distribution of several species of Euchirella in the Tasman Sea and around New Zealand.
Nota: Euchirella indica (= Euchirella massinensis indica).
Loc:
sub-Antarct. (Indian, SE Pacif.), off South Africa (W), Namibia, off S St.-Helena Is., Cape Verde Is., S Indian, SW Australia, S Tasmania, New Zealand, off Juan Fernandez Is., Chile.

Type locality: Atlantic (between 17°28'N and 35°39'S).
N: 12
Lg.:
(10) F: 4; (37) F: 5,41-4; (201) F: 4,75; (242) F: 5,3-4,7; (432) F: 5,15-4,3; (1257) F: 5,0-5,3; {F: 4,00-5,41}

The mean female size 4.701 mm (n = 8; SD = 0.5618).
Rem.: Meso-bathypelagic.
Sampling depth (sub-Antarct.) : 400-2000 m.
For Vervoort (1957, p.64) the female is recognized by the curious protuberance on the right side of the genital somite. The posterior surface of the 1st basal segment of P4, according to Wolfenden's notes, carries 2 or 3 strong spines; Vervoort'specimen shows 2 of such spines.
Last update : 22/02/2021
    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., 2005-2021. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed October 18, 2021]

© copyright 2005-2021 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