Fiche d'espèce de Copépode
Monstrilloida ( Ordre )
    Monstrillidae ( Famille )
        Monstrilla ( Genre )
Monstrilla brasiliensis  Dias & Suarez-Morales, 2000   (F)
Ref.:
Suarez-Morales & Dias, 2000 (p.1034, Descr.F, figs.F); 2011 (p.8, 9)
Espèce Monstrilla brasiliensis - Planche 1 de figures morphologiquesissued from : E. Suarez-Morales & C. Dias in J. mar. Biol. Ass. U.K., 2000, 80. [p.1035, Fig.3].
Female (from Baia do Espirito Santo: Brazil): A-B, habitus (dorsal and ventral, respectively); C, 5th pedigerous somite and genital double-somite (lateral; arrows indicate surface P5 button-like processes); D, idem (ventral).

Nota: Head and 1st pedigerous somite fused, and 3 free succeeding pedigerous somites. Forehead with pair of short, slender sensillae. P5 elongated, with 2 distinct lobes, fused medially; outer lobe slender, about 1.2 times thicker than inner lobe one and slightly longer, armed with 3 long setae (setae with scattered setules); inner lobe slender, cylindrical, armed with 1 distal seta, in lateral view, base of inner lobe with 2 small, rounded cuticular protuberances (arrowed in fig.3C); P5 shows a conspicuous set of stout hair-like setae on the surface. Urosome consisting of 5th pedigerous somite, genital double-somite, and 2 free abdominal somites; urosome representing (excluding caudal rami) 21.7 % of total body length. Genital double-somite with short ovigerous spines, spines about 20.4 % of total body length, extending slightly beyond distal margin of caudal rami.


Espèce Monstrilla brasiliensis - Planche 2 de figures morphologiquesissued from : E. Suarez-Morales & C. Dias in J. mar. Biol. Ass. U.K., 2000, 80. [p.1036, Fig.4].
Female: A, left A1 (dorsal view); B, right A1 (dorsal view). Armament elements shown in terms of Grygier & Ohtsuka (1995) nomenclature.
Nota: A1 between 40 and 45 % as long as cephalothorax and about 20 % of total body length; 3-segmented; ratio of length of segments 13.8:16.6:69.6 = 100; distal segment with setae b1-b3 simple, unbranched.


Espèce Monstrilla brasiliensis - Planche 3 de figures morphologiquesissued from : E. Suarez-Morales & C. Dias in J. mar. Biol. Ass. U.K., 2000, 80. [p.1037, Fig.5].
Female: A, habitus (lateral); B, cephalic region (ventral); C, caudal rami (dorsal); D, terminal segment of exopod of P4; E, idem for P1; F, basipodal lateral seta of P3; G, idem for P2.
Nota: Caudal rami about 2 times longer than wide, moderately divergent, bearing 1 lateral, 1 outer, 3 terminal and 1 dorsal setae.


Espèce Monstrilla brasiliensis - Planche 4 de figures morphologiquesissued from : E. Suarez-Morales & C. Dias in J. mar. Biol. Ass. U.K., 2000, 80. [p.1037].
Female: Armature of swimming legs P1 to P4. [Roman numeral = spine, arabic numeral = seta]

Ref. compl.:
Dias & Bonecker, 2007 (p.270, 272, fig.3, tab.II); Oliveira Dias & al., 2008 (p.248, tab.1)
NZ: 1

Carte de distribution de Monstrilla brasiliensis par zones géographiques
Loc:
Brazil (Salvador-Rio de Janeiro, Rio Grande do Norte).
N: 2
Lg.:
(843) F: 2,0-2,78; 2,81-3,01*; (997) F: 2,2*;
*: caudal rami excluded.
Rem.: According to Suarez-Morales & Dias (2000, p.1038) this species can easily be distinguished from all the other known species of Monstrilla by the peculiar structure of P5, which shows a conspicuous set of stout hair-like setae on the surface of the legs; this species shares with M. inserta (type material from the Siboga Expedition) the peculiar A1 structure (among others the presence of the two structures on the base, this enigmatic struture has not been reported in the Monstrilloida), the body proportions, the length of the ovigerous spines, and the general structure of P5.
Dernière mise à jour : 20/01/2015

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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 04 décembre 2021]

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