Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Aetideidae ( Famille )
            Euchirella ( Genre )
Euchirella paulinae  Vaupel Klein, 1980   (F)
Ref.:
Vaupel Klein, 1980 (p.131 & suiv., figs F); 1984 a (p.41)
Espèce Euchirella paulinae - Planche 1 de figures morphologiquesissued from : J.C. von Vaupel Klein in Zool. Meded. Leiden, 1980, 55 (12). [p.133, Fig.1].
Female (from 5°18'N, 90°55'E): a, habitus (dorsal wiew); b, idem (left side).


Espèce Euchirella paulinae - Planche 2 de figures morphologiquesissued from : J.C. von Vaupel Klein in Zool. Meded. Leiden, 1980, 55 (12). [p.136, Fig.2].
Female: a, b, urosome (dorsal, left, respectively); c, genital somite (right side); d, genital field (ventral); e, frontal region of head and rostrum (left side); f, idem from different specimen.


Espèce Euchirella paulinae - Planche 3 de figures morphologiquesissued from : J.C. von Vaupel Klein in Zool. Meded. Leiden, 1980, 55 (12). [p.143, Fig.5].
Female: a, left Mx2 (posterior view); b, idem (detail of terminal part of first endite); c, right Mx2 (anterior); d, left Mxp (lateral view); e, right Mxp (medial view).


Espèce Euchirella paulinae - Planche 4 de figures morphologiquesissued from : J.C. von Vaupel Klein in Zool. Meded. Leiden, 1980, 55 (12). [p.146, Fig.6].
Female: a, P1 (anterior view); b, idem (detail of terminal spine of exopod of right leg); c, idem (detail of medial margin of exopod 1 of right leg); d, idem (detail of endopod of right leg); e, P2 (posterior); f, idem (detail of terminal spine of exopod of left leg); g, idem (detail of endopod of left leg (posterior).


Espèce Euchirella paulinae - Planche 5 de figures morphologiquesissued from : J.C. von Vaupel Klein in Zool. Meded. Leiden, 1980, 55 (12). [p.148, Fig.7].
Female: a, P3 (posterior view), incomplete; b, idem (detail of endopod 1 of left leg); c, right P3 (posterior); d, idem (detail of endopod 2 from different specimens (paratype).


Espèce Euchirella paulinae - Planche 6 de figures morphologiquesissued from : J.C. von Vaupel Klein in Zool. Meded. Leiden, 1980, 55 (12). [p.149, Fig.8].
Female: a, P4 (posterior view), incomplete and slightly distorted; b, idem (detail of endopod 1 of left leg); c, idem (detail of basipodal segments 1 and 2 of left leg); d, right P4 (posterior); d, right P4 (posterior) from female paratype; e, detail of basipod 1 of left P4 (posterior view), aberrant female from different specimen, with only one spine present.


Espèce Euchirella paulinae - Planche 7 de figures morphologiquesIssued from : J.C. von Vaupel Klein inZool. Meded., Leiden, 1980, 55 (12). [p.138, Fig.3, a-b].
Female: a, left A1 (lateral view); b, right A1 (medial view).

Nota: A1 reaching just beyond the genital segment; 24-segmented, segments 8 and 9 being fully coalesced; fusion of segments 24 and 25 intimate, but not quite complete. The proximal segments, i.e. up to and including segment 12, are rather short and more compactly built, whereas the distal segments 13 to 24 rather long and slender; the terminal segment is minute. Large setae are prsent on segments nos. 3, 7, 8+9, 14, 16, 18, and 21, in each case one only, all placed distally along the frontal edges.


Espèce Euchirella paulinae - Planche 8 de figures morphologiquesIssued from : J.C. von Vaupel Klein inZool. Meded., Leiden, 1980, 55 (12). [p.140, Fig.4, a-h].
Female: a, left A2 (lateral view); b, right A2 (medial view); c, right Md (antero-ventral); d, detail of chewing plate of Md (anterior view) (smaller setiform tooth broken-off); e, palp of left Md; f, gnathobase of left Md (ventral view); g, detail of chewing plate of right Md (anterior view) (larger setiform tooth broken-off; setiform protrusions in the two smaller bicuspidate molariform complexes indicated by minute arrows); h, detail of proximal multicuspidate molariform complex of right Md (posterior view), with both setiform teeth in situ.


Espèce Euchirella paulinae - Planche 9 de figures morphologiquesIssued from : J.C. von Vaupel Klein inZool. Meded., Leiden, 1980, 55 (12). [p.140, Fig.4, i, j].
Female: i, left Mx1(anterior view); j, right Mx1 (posterior view).

Nota: Basal segments of Mx1 completely coalesced.
The moderately heavy 1st inner lobe equipped with a total of 9 setae along its internal margin: the two proximal ones are comparatively long and slender, with rounded-off tips, and sparsely spinulose; the remaining 7 setae are stout and powerful, tapering to more acutely pointed tips, and provided with strong, double serrations along their distal parts. These latter setae are placed alternately on the anterior and posterior sides of the lobe's edge, starting with a posteriorly placed distalmost seta, then followed by and anteriorly placed penultimate one, and so on. Thus, there are a total of 4 setae along the posterior side of the margin, which are serrate only; the 3 setae placed anteriorly are likewise serrate, but, moreover, also sparsely spinulose in their medial portions. There is 1 smaller, serrate seta situted submarginally on the anterior face of the first inner lobe, and a total of 3 combined serrate-spinulose setae have been observed on thelobe's posterior surface. One small brush of hairs only at the apical edge of this particular lobe.
The second inner lobe rather slender, and shorter than the first.. It bears 4 setae apically, which are set closely together, rather long, but apparently stiff as well. 3 of these setae are serrate distally, and sparsely spinulose along most of their lengths; 1 seta is spinulose only. The second inner lobe overreaches the small and only partly free third inner lobe.
The third inner lobe is reduced and bears 2 weakly developed setae apically: 1longer, plumose one, and 1 very short, slender seta, sparsely plumose as well. There is a long-drawn brush of thin hairs along yjis lobe's anterior surface.

NZ: 1

Carte de distribution de Euchirella paulinae par zones géographiques
Loc:
NE Indian (off S Nicobar Is.)
N: 1
Lg.:
(242) F: 4,1-3,8; {F: 3,80-4,10}
Dernière mise à jour : 05/01/2015

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Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2020. - Diversité et répartition géographique chez les Copépodes planctoniques marins. Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 28 septembre 2020]

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