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Taxonomic report of some monstrilloids (Copepoda: Monstrilloida) from Brazil with description of four new species
Suárez-Morales, E.; Dias, C. (2001). Taxonomic report of some monstrilloids (Copepoda: Monstrilloida) from Brazil with description of four new species. Bull. Kon. Belg. Inst. Natuurwet. Biologie 71: 65-81
In: Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen. Biologie = Bulletin de l'Institut Royal des Sciences Naturelles de Belgique. Biologie. Koninklijk Belgisch Instituut voor Natuurwetenschappen: Bruxelles. ISSN 0374-6429, more
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  • Suárez-Morales, E.
  • Dias, C.

Abstract
    During a series of zooplankton surveys carried out during different years (1993-1996) off the coasts of the State of Bahia, Brazil, several monstrilloid copepods were collected. The systematic analysis of this group allowed the identification of four previously unknown species. Two of them belong to the genus Monstrilla, one to Cymbasoma, and one of the rare genus Monstrillopsis. The first species of Monstrilla (M. satchmoi spec.nov), represented by a female specimen can be readily identified by the bilobed condition of its oral papilla, by the presence of a deep notch on the head, between the antennule bases, and by the structure of the fifth legs. This species has an inner basipodal spine which might have a phylogenetic interest. The second Monstrilla species (M. bahiana spec.nov) can be identified by its peculiar genital apparatus and by its body proportions. The new species of Cymbasoma (C. rochai spec.nov.), represented by a male specimen, can be distinguished mainly by a protuberance on the ventral surface of the head, and by its peculiar genital apparatus, with very short lappets. The new Monstrillopsis, represented by a badly damaged individual, was assigned to this genus for having a genus-typical antennule morphology with a curved terminal process on the last antennular segment. The species (M.fosshageni spec. nov.) is recognized as new mainly by the structure of its genital apparatus and by the cuticular processes on the dorsal surface of the cephalothorax. All the species were described following the new, upgraded standards. The occurrence of these new species in Brazil suggests that there are still many more undescribed monstrilloid copepods in this country.

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