Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Aetideidae ( Family )
            Euchirella ( Genus )
Euchirella speciosa  Grice & Hülsemann, 1968   (F)
Ref.:
Grice & Hülsemann, 1968 (p.325, Descr.F, figs.F, tab.2); Tanaka & Omori, 1969 a (p.160, Rem.); Bradford & Jillett, 1980 (p.43, figs.F, fig. 73, distribution chart); Vaupel Klein, 1980 (p.152); 1984 a (p.46, 49, figs.F, Table II: characters, Rem.); Markhaseva, 1996 (p.167, figs.F)
Species Euchirella speciosa - Plate 1 of morphological figuresissued from : J.M. Bradford & J.B. Jillett in Mem. N.Z. oceanogr. Inst., 86, 1980. [p.45, Fig.28].
Female: A, habitus (lateral left side); B, idem (dorsal); C, genital segment (lateral left side); D, idem (lateral right side); E, idem (dorsal); F, basipod 1 of P4.Nota: The south-west Pacific specimens agree more closely with E. speciosa Grice & Hulsemann, 1968 than with E. venusta.


Species Euchirella speciosa - Plate 2 of morphological figuresissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.76, Fig.14, b].
Female: b, exopodite 2 of Mxp (with 3 setae).
Scale bar = 0.2 mm.


Species Euchirella speciosa - Plate 3 of morphological figuresissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.84, Fig.18, a, j, l].
Female: a, number and structure of spines among the lateral margin of exopodal segments 1, 2 and 3 of P1 (left appendage, posteriotr view) (note: 3 unequal spines, the proximal two largely smooth, the distal one minutely pectinate (corresponding to exopodites 1, 2 and 3 respectively); j, stage in fusion of endopodal segments 1-2+3 of P2 (right leg, anterior face, drawn from posterior) (note: fully coalesced condition; l, lateral margin of exopodal segment 2 of P2 (left appendage, posterior view).
Scale bars: p = 0.2 mm for l; q = 0.2 mm for a and j.


Species Euchirella speciosa - Plate 4 of morphological figuresissued from : G.D. Grice & K. Hulsemann in Pacif. Sci., 1968, 22 (3). [p.326, Figs.14-19].
Female (from SE Pacific): 14, habitus (dorsal); 15, anterior end of head (lateral); 16, 4th and 5th thoracic segments (left lateral view); 17, idem (right lateral view); 18, A2; 19, 1st basipodal segment of P4.

Nota: Head and 1st thoracic segment fused, 4th and 5th fused. Head witout crest. Genital segment asymmetrical, in dorsal view right side smooth, left side with 2 small swellings. One-pointed rostrum, directed downward. A1 24-segmented (segments 8 and 9 fused), reaching caudal rami. Endopod of A2 about 1/4 of exopo; outer lobe of terminal segment of endopod with 5, inner lobe with 4 setae. Endopod of P1 1-segmented, exopod 2-segmented with 3 straight external spines. Endopod of P2 1-segmented, exopod 3-segmented. Endopods and exopods of P3 and P4 3-segmented. Posterior surface of 1st basipodal segment of P4 with 2 rather strong, unequal spines.


Species Euchirella speciosa - Plate 5 of morphological figuresissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.69, Fig.9, b].
Female: b, setal armature on the posterior face of the 1st inner lobe of basipodal segment 1 of left Mx1 (3 setae, numbered 1 to 3 in a proximal to distal order to compare other species, here seta 4 absent contrary in E. rostrata).
Scale bar: 0.1 mm.


Species Euchirella speciosa - Plate 6 of morphological figuresEuchirella speciosa female:
1 - Genital segment asymmetrical.
2 - Crest absent.
3 - Genital segment with left lateral side swelled (dorsal view).
4 - Coxopodite of P4 with 2 spines.
5 - Endopodal segment 1 of Md without seta.
6 - Endopodal segment 2 of A2 with 5 setae on external lobe and 4 setae on internal lobe.
7 - Genital segment in dorsal view left side with 2 small projections (bilobated).


Species Euchirella speciosa - Plate 7 of morphological figuresissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.68, Fig.8, l].
Euchirella speciosa: Structure and setal complement of endopod 1 of Md (right, posterior). A very minute setal vestige (arrow), as in Euchirella messinensis).


Species Euchirella speciosa - Plate 8 of morphological figuresissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.68, Fig.8, o].
Euchirella speciosa: Accessory setae on endopodite 2 of Md (right appendage in posterior view). No accessory setae, only the regular terminal row of 9 setae present.


Species Euchirella speciosa - Plate 9 of morphological figuresIssued from : J.C. von Vaupel Klein in Crustaceana, (Supplement) 9, 1984. [p.93, Tableau II].
Euchirella speciosa 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 speciosa - Plate 10 of morphological figuresIssued from : J.C. von Vaupel Klein in Crustaceana, (Supplement) 9, 1984. [p.93, Tableau 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 speciosa - Plate 11 of morphological figuresIssued from : J.C. von Vaupel Klein in Crustaceana, (Supplement) 9, 1984. [p.93, Tableau 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.:
Lo & al., 2004 (p.89, tab.1)
NZ: 3

Distribution map of Euchirella speciosa by geographical zones
Species Euchirella speciosa - Distribution map 2Issued 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:
SE Pacif. (off Juan Fernandez Is.), New Zealand, China Seas (East China Sea), Taiwan (N: Mienhua Canyon).

Type locality: 31°S, 90°W.
N: 4
Lg.:
(100) F: 4,92; (201) F: 5,1-4,4; (242) F: 4,9; (1257) F: 4,6-5,1; {F: 4,40-5,10}
Rem.: epi-bathypelagic.
This species is very like E. venusta.
For Grice & Hulsemann (1968, p.525) this species closely resembles E. formosa Vervoort, E. indicaVervoort and E. venusta Giesbrecht in the absence of a crest, the number of spines on the 1st basipodal segment of P4, and the number of setae on the lobes of the terminal segment of the endopod of A2.
Lo & al. (2004) seem to have observed this species for the first time in the NW Pacific (Taiwan).
After Vaupel Klein (1984a, p.47) the shape of the genital somite, exhibits a constant and distinct difference with E. venusta in the material examined.
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 February 24, 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