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Three new species of Pontella (Copepoda, Calanoida) from Indonesian waters, with notes on their species-groups

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Three new species of Pontella, P. bonei, P. kleini, and P. vervoorti are described and illustrated from specimens collected in three areas of Indonesian coastal waters, and their relationships to related species are discussed.

P. kleini, collected from Cilacap Bay, central Java, which belongs to the P. labuanensis-group of Mulyadi (1997) is distinguishable from other species of this group by a combination of characters of the genital complex without any processes, the Re's of P5, and the asymmetrical caudal rami (CR) in the female; and the rostrum with double convex lenses, the Re's of the P5 with 2 subequal thumbs, and the anterior surface of the chela of the right P5 being without any processes in the male.

P. bonei and P. vervoorti, which were collected from Bone Bay, south Celebes, and Semarang Harbour, central Java, belong to the P. danae-group of Mulyadi (1997) and are distinguished from other species of this group by the extreme asymmetry in the CR; P5 is virtually naked and asymmetrical, the terminal segment of left P5 is bulb-shaped, the apex has 3 round-tipped spines which are becoming shorter outwards, and 1 flagellar process.

Trois nouvelles espèces de Pontella, P. bonei, P. kleini et P. vervoorti sont décrites et illustrées grâce à des spécimens provenant de trois zones des eaux côtières indonésiennes, et leurs relations avec les espèces affines sont discutées.

P. kleini, trouvée dans la baie de Cilacap au centre de l'île de Java, appartient au groupe P. labuanensis de Mulyadi (1997) et se distingue des autres espèces du groupe par une combinaison de caractères: le complexe génital dépourvu de processus, l'exopodite de la P5 et les rames furcales (CR) asymétriques chez la femelle et chez le mâle: le rostre à deux lentilles convexes, l'exopodite de la P5 avec deux processus digitiformes subégaux et la surface antérieure de l'aculeus de la P5 droite sans aucun processus.

P. bonei et P. vervoorti, récoltées dans la baie de Bone, dans le sud de l'île de Célèbes et dans le port de Semarang, à Java, appartiennent au groupe P. danae de Mulyadi (1997). Elles se distinguent des autres espèces du groupe par l'extrême asymétrie des rames furcales, les P5 pratiquement nues et asymétriques, le segment terminal de la P5 gauche en forme de bulbe, l'apex portant trois épines à bouts arrondis et devenant plus courtes vers l'extérieur et un processus flagelliforme.


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