Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Epacteriscoidea ( Superfamille )
        Ridgewayiidae ( Famille )
            Exumellina ( Genre )
Exumellina bucculenta  Fosshagen, 1998   (F,M)
Ref.:
in Fosshagen & Iliffe, 1998 (p.376, figs.F,M); Barthélémy, 1999 a (p.10, fig.)
Espèce Exumellina bucculenta - Planche 1 de figures morphologiquesissued from : A. Fosshagen & T.M. Iliffe in J. Marr. Syst., 1998, 15 [p.375, Fig.2].
Female (from Bahamas): A-B, habitus (lateral and dorsal, respectively); C, rostrum and frontal part of head; D, urosome (lateral); E, idem with spermatophore (lateral); F, urosome (ventral); G, A1; H, A2; I, Md; J, Mx1; K, Mx2.

Nota:
Head and 1st pedigerous somite separated only by a weak dorsal suture. Caudal rami about twice as long as wide and with 6 elements, one being a small posterolateral outer spine.
A1 27-segmented with segments II and III partially separated; extending backward to end of genital double-somite; particularly long setae present on segments V, IX, XI, XIV, XX, XXII, XXVI.
A2 with exopod 1.5 times longer than endopod; exopod 7-segmented with 11 setae; endopod 2-segmented and compressed with last segment having distinct inner lobe bearing 9 setae.
Md with well-developed cutting blade bearing pointed teeth along most of its margin, except for 2 broad and distally serrated teeth on outer margin; Basis of palp unarmed; endopod 2-segmented about twice length of exopod, 1st segment with 1 inner seta, 2nd segment trnasformed into an elongated, flattened thin structure bearing 5 small setae along inner margin and 2 small distal ones.
Mx1 with slender praecoxal arthrite having 14 elements; coxal endite and basal endites with 3 and 4 setae respectively; exopod with 2 groups of setae, each with 5 setae; endopod 2-segmented, extremely elongated into flattened and thin structure bearing 3 groups of 4, 3 and 5 small setae, respectively, on inner margin.
mx2 compressed, with indistinctly segmented terminal part; 1st praecoxal endite with 4 (5 ?) setae.


Espèce Exumellina bucculenta - Planche 2 de figures morphologiquesissued from : A. Fosshagen & T.M. Iliffe in J. Marr. Syst., 1998, 15 [p.377, Fig.3].
Female: A, Mxp; B, P1; C, P2; D, P3; E, P4; F, P5.

Male: G, habitus (lateral); H, right A1; I, left P5 (anterior); J, right P5 (posterior).
Nota: Urosome 5-segmented. Right A1 geniculate, 22-segmented with two partial divisions of segment 2, segment 22 armed with stylet-like process and 1 aesthetasc distally on anterior margin.


Espèce Exumellina bucculenta - Planche 3 de figures morphologiquesissued from : R.-M. Barthélémy in These Doc. Univ. Provence (Aix-Marseille I), 1999 [Fig.15, G].
Female (from Norman's pond cave: Bahamas): G, external ventral view of genital double-somite.
go = genital operculum (note the bilobated lobe). Scale bar: 0.010 mm.

NZ: 1

Carte de distribution de Exumellina bucculenta par zones géographiques
Loc:
Bahamas Islands (Norman's Pond Cave, Exuma Cays)
N: 1
Lg.:
(763) F: 0,77-0,69; M: 0,69-0,61; {F: 0,69-0,77; M: 0,61-0,69}
Rem.: anchialine cave.
Voir aussi les remarques en anglais
Dernière mise à jour : 05/01/2015

 Toute utilisation de ce site pour une publication sera mentionnée avec la référence suivante :

Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2021. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 24 juillet 2021]

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