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1

Pseudorhabdosynochus inversus sp.nov. [Monogenea, Diplectanidae] from the halfmoon grouper Epinephelus rivulatus [Perciformes, Serranidae] off New Caledonia

100%

Justine J. L.

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nr 4

EN

Pseudorhabdosynochus inversus sp. nov. is described from three specimens found in a halfmoon grouper, Epinephelus rivulatus, from the external slope of the barrier reef, New Caledonia, South Pacific. The new species is characterised by the structure of its sclerotised vagina, which resembles that of P. epinepheli (Yamaguti, 1938) but has its primary chamber inverted, and by its measurements. The diplectanid fauna of E. rivulatus shows the same pattern as in other groupers, probably belonging to a clade in which fish species harbour both an abundant species of the ‘Pseudorhabdosynochus cupatus group’ (here P. calathus Hinsinger et Justine, 2006) and a rare species (here P. inversus).

FR

Pseudorhabdosynochus inversus sp. nov. est décrit de trois spécimens trouvés chez un mérou demi-lune, Epinephelus rivulatus, de la pente externe du récif barriPre, Nouvelle-Calédonie, Pacifique Sud. La nouvelle espPce est caractérisée par la structure de son vagin sclérifié, qui ressemble B celui de P. epinepheli (Yamaguti, 1938) mais a sa chambre primaire inversée, et par ses mensurations. La faune des Diplectanidae de E. rivulatus montre le mLme patron que chez d.autres mérous, probablement appartenant B un clade, chez lesquels les espPces de poissons hébergent B la fois une espPce abondante du groupe ‘Pseudorhabdosynochus cupatus’ (ici P. calathus Hinsinger et Justine, 2006) et une espPce rare (ici P. inversus).

2

Elthusa epinepheli sp. nov. [Crustacea, Isopoda, Cymothoidae] a branchial parasite of the grouper Epinephelus howlandi [Serranidae, Epinephelinae] from off New Caledonia

80%

Trilles J. P. , Justine J.-L.

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nr 2

177-187

EN

The cymothoid isopod Elthusa epinepheli sp. nov., a branchial parasite of the blacksaddle grouper Epinephelus howlandi (Serranidae, Epinephelinae) from the coral reef of New Caledonia (Southwestern Pacific), is described and figured.Within the genus, E. epinepheli shows some similarity with E. raynaudii and E. myripristae. The ovigerous female of E. epinepheli can be distinguished from E. raynaudii by a less ovate body; cephalon deeply immersed in pereonite 1; eyes almost concealed by the amphicephalic processes; pereonites 3–7 distinctly decreasing in size (width and length); pleonites 1–5 distinctly increasing in width; and pleotelson larger. E. epinepheli can be distinguished from E. myripristae by the anterior margin of the cephalon being rounded in dorsal view and all pleonites being visible. E. epinepheli is the first species of Elthusa reported from the host genus Epinephelus.

FR

Elthusa epinepheli sp. nov. (Isopoda, Cymothoidae), parasite branchial du mérou Epinephelus howlandi du récif corallien de Nouvelle-Calédonie, est décrit et représenté. A l’intérieur du genre, E. epinepheli est morphologiquement proche des deux espèces E. raynaudii et E. myripristae. Par rapport à E. raynaudii, la femelle ovigère de E. epinepheli est caractérisée par un corps moins ovale, un céphalon profondément inclus dans le péréonite 1, des yeux presque entièrement dissimulés par les processus amphicéphaliques, des péréonites dont la taille (largeur et longueur) diminue nettement du troisième au septième, des pléonites dont la largeur augmente nettement du premier au cinquième et un pléotelson plus grand. Le bord antérieur arrondi de son céphalon et le fait que tous les pléonites soient visibles permet de distinguer E. epinepheli de E. myripristae. E. epinepheli est le premier Elthusa signalé sur des poissons du genre Epinephelus.

3

New philometrids [Nematoda, Philometridae] from head tissues of two serranid fishes [Epinephelus morio and Mycteroperca microlepis] off Florida, Northern Gulf of Mexico

80%

Moravec F. , Bakenhaster M. , Fajer-Avila E. J.

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nr 4

359-368

EN

A new species of nematode, Philometra morii sp. nov. (Philometridae), is described from males and gravid females collected from the mouth cavity of the red grouper, Epinephelus morio (Valenciennes) (Serranidae, Perciformes), from the northen Gulf of Mexico, off Florida, USA. The new species is characterized mainly by the length of spicules (84–90 and 72–87 μm) and the length (54 μm) and structure of the gubernaculum in the male, and by the presence of three large oesophageal teeth protruding from the mouth, the number and arrangement of small cephalic papillae (8 papillae in 4 pairs of external circle and 6 single papillae of internal circle), the length (1.09–1.50 mm) and structure of the oesophagus and two large papilla-like caudal projections, and by the length of their bodies (19.34–30.07 mm). Philometra morii is the third species of this genus reported from E. morio in the Gulf of Mexico, differing from the two previously described species, in addition to morphological features, by the site of infection in this host (mouth cavity and sinuses vs oculo-orbits or gonads). From the same region (northern Gulf of Mexico, off Florida), gravid females of Philometra Costa, 1845, morphologically and biometrically similar to those of P. morii, were found in the subcutaneous tissues and sinuses of the head of another serranid fish (gag), Mycteroperca microlepis (Good et Bean). Although their conspecificity with P. morii cannot be excluded, they have been designated as Philometra sp. until conspecific males are discovered and described. Based on light and scanning electron microscopy examination (latter used only for females), both these forms are described.

4

Gonad-infecting species of Philometra (Nematoda: Philometridae) from groupers Epinephelus spp. (Osteichthyes: Serranidae) in the Bay of Bengal, India

80%

Moravec F. , Manoharan J.

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nr 4

EN

Based on light and scanning electron microscopical studies, two new and one specifically not identified gonad-infecting species of Philometra Costa, 1845 (Nematoda: Philometridae) are described from the ovary of marine fishes of the genus Epinephelus Bloch (Serranidae, Perciformes) in the Bay of Bengal, off the eastern coast of India: P. indica sp. nov. (male and females) from the honeycomb grouper E. merra Bloch, P. tropica sp. nov. (males and females) from the duskytail grouper E. bleekeri (Vaillant) and Philometra sp. (only females) from the cloudy grouper E. erythrurus (Valenciennes). Philometra indica is mainly characterized by the length of spicules 192–195 μm and the gubernaculum 84 μm, the distal tip of the gubernaculum without a dorsal protuberance, and by the presence of five pairs of caudal papillae. Philometra tropica is mainly characterized by the spicules conspicuously ventrally distended at their posterior halves, the distal tip of the gubernaculum with a dorsal protuberance, and the presence of three pairs of caudal papillae.

5

Two species of Philometra [Nematoda, Philometridae] from serranid fishes off New Caledonia

80%

Moravec F. , Justine J. L.

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nr 4

EN

Two nematode species of the genus Philometra Costa, 1845, P. ocularis Moravec, Ogawa, Suzuki, Miyazaki et Donai, 2002 (gravid and nongravid females) and P. lateolabracis (Yamaguti, 1935) (males and nongravid females), were recorded from the ocular cavity and ovaries, respectively, of serranid fishes (Serranidae, Perciformes) off New Caledonia, South Pacific. The gravid female of P. ocularis was found to attain a body length up to 96 mm (as compared to 59 mm in the original description). The males of P. lateolabracis are described from fishes of the Pacific region for the first time; their spicules were found to be 147-213 µm in length, suggesting thus the synonymy of the recently re-established species P.jordanoi (López-Neyra, 1951) with P. lateolabracis. The findings of P. ocularis in Epinephelus coioides, E. cyanopodus, E. rivulatus and Variola louti, and P. lateolabracis in Epinephelus cyanopodus and E. fasciatus represent new host records. Both nematode species are reported for the first time from the region of New Caledonia, and P. ocularis from the South Pacific Ocean.

FR

Deux espèces de Nématodes du genre Philometra Costa, 1845, P. ocularis Moravec, Ogawa, Suzuki, Miyazaki et Donai, 2002 (femelles gravides et non gravides) et P. lateolabracis (Yamaguti, 1935) (mâles et femelles non gravides), ont été recensées des cavités oculaires et des ovaires, respectivement, de mérous (Perciformes, Serranidae) de Nouvelle-Calédonie, Pacifique Sud. La femelle gravide de P. ocularis atteint une longueur de 96 mm (à comparer aux 59 mm de la description originale). Les mâles de P. lateolabracis sont décrits de poissons du Pacifique pour la première fois; leurs spicules sont longs de 147-213 µm, ce qui suggère la synonymie de l'espèce récemment ré-établie P. jordanoi (López-Neyra, 1951) avec P. lateolabracis. P. ocularis chez Epinephelus coioides, E. cyanopodus, E. rivulatus et Variola louti, et P. lateolabracis chez Epinephelus cyanopodus et E.fasciatus fournissent des mentions de nouveaux hôtes. Les deux espèces de Nematodes sont mentionnées pour la première fois de Nouvelle-Calédonie, et P. ocularis pour la première fois dans l'Océan Pacifique Sud.

6

A new species of Stephanostomum Looss, 1899 [Digenea, Acanthocolpidae] with a bizarre oral sucker: S.adlardi sp.nov. from the common coral trout Plectropomus leopardus [Lacepede, 1802] [Perciformes, Serranidae] from Lizard Island, Great Barrier Reef

80%

Bray R. A. , Cribb T. H. , Waeschenbach A. , Littlewood D. T. J.

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nr 3

EN

Bray R., Justine J.-L. 2007. Pseudopycnadena tendu sp. nov. (Digenea, Opecoelidae) in the yellow-spotted triggerfish Pseudobalistes fuscus (Perciformes, Balistidae) and additional opecoelids parasitizing fishes from the waters off New Caledonia. Acta Parasitologica, 52, 13–17. DOI: 10.2478/s11686-006-0051-3. CrossRefGoogle Scholar Hinsinger D.D., Justine J.-L. 2006. The ‘Pseudorhabdosynochus cupatus group’ (Monogenea, Diplectanidae) on Epinephelus fasciatus, E. howlandi, E. rivulatus and E. merra (Perciformes: Serranidae) off New Caledonia, with descriptions of Pseudorhabdosynochus cyathus n. sp. and P. calathus n. sp. Systematic Parasitology, 64, 69–90. DOI: 10.1007/s11230-005-9018-2. PubMedCrossRefGoogle Scholar Justine J.-L. 2005. Species of Pseudorhabdosynochus Yamaguti, 1958 (Monogenea, Diplectanidae) from Epinephelus fasciatus and E. merra (Perciformes, Serranidae) off New Caledonia and other parts of the Indo-Pacific Ocean, with a comparison of measurements of specimens prepared with different methods and a description of P. caledonicus n. sp. Systematic Parasitology, 62, 1–37. DOI: 10.1007/s11230-005-5480-0. PubMedCrossRefGoogle Scholar Justine J.-L. 2007. Parasite biodiversity in a coral reef fish: twelve species of monogeneans on the gills of the grouper Epinephelus maculatus (Perciformes: Serranidae) off New Caledonia, with a description of eight new species of Pseudorhabdosynochus (Monogenea: Diplectanidae). Systematic Parasitology, 66, 81–129. DOI: 10.1007/s11230-006-9057-3. PubMedCrossRefGoogle Scholar Laboute P., Grandperrin R. 2000. Poissons de Nouvelle-Calédonie. Éditions Catherine Ledru, Nouméa, New Caledonia, 520 pp. Google Scholar Randall J.E. 2005. Reef and Shore Fishes of the South Pacific. New Caledonia to Tahiti and the Pitcairn Islands. University of Hawai’i Press, Honolulu, 707 pp. Google Scholar Zeng B., Yang T. 2007. Description of Pseudorhabdosynochus justinei n. sp. (Monogenea: Diplectanidae) and redescription of P. vagampullum (Young, 1969) Kritsky & Beverley-Burton, 1986 from the gills of the longfin grouper Epinephelus quoyanus (Valenciennes) (Perciformes: Serranidae) in Dapeng Bay, South China Sea. Systematic Parasitology, 66, 223–235. DOI: 10.1007/s11230-006-9067-1.