The nematode genus Bulbocephalus Rasheed, 1966 (Nematoda, Physalopteridae) was found to be a homonym of Bulbocephalus Watson, 1916 (Apicomplexa) and, therefore, a new name, Rasheedia n. nom., is proposed to substitute it. Based on light and scanning electron microscope studies of specimens collected from the digestive tract of perciform fishes off New Caledonia, two new species of Rasheedia are described: R. heptacanthi n. sp. from the Cinnabar goatfish Parupeneus heptacanthus (Mullidae) (type host) and Dentex fourmanoiri (Sparidae), and R. novaecaledoniensis n. sp. from the Indian goatfish Parupeneus indicus (Mullidae). These new species are mainly characterized by the number of anterior protrusible oesophageal lobes (two in R. heptacanthi and four in R. novaecaledoniensis), structure of the oesophagus and the lengths of spicules. An amended diagnosis of Rasheedia and a key to species of this genus are provided. Three previously described congeneric species are transferred to Rasheedia as R. deblocki (Le-Van-Hoa, Pham-Ngoc-Khue & Nguyen-Thi-Lien, 1972) n. comb., R. inglisi (Rasheed, 1966) n. comb. and R. pseudupenei (Vassiliadès & Diaw, 1978) n. comb. Cestocephalus Rasheed, 1966 [genus inquirendum], including C. serratus Rasheed, 1966 and C. petterae (Le-Van-Hoa, Pham-Ngoc-Khue & Nguyen-Thi-Lien, 1972) n. comb., should be considered to be separate from Rasheedia. The names Pseudomazzia Bilqees, Ghazi & Haseeb, 2005 and P. macrolabiata Bilqees, Ghazi & Haseeb, 2005, established for a nematode somewhat resembling Rasheedia spp., should be considered nomina dubia. Rasheedia heptacanthi n. sp. and R. novaecaledoniensis n. sp. are the first representatives of the Physalopteridae recorded from fishes in New Caledonian waters.

TITLE: Rasheedia n. nom. (Nematoda, Physalopteridae) pour Bulbocephalus Rasheed, 1966 (homonyme de Bulbocephalus Watson, 1916), avec description de Rasheedia heptacanthi n. sp. et R. novaecaledoniensis n. sp. de poissons perciformes de Nouvelle-Calédonie. ABSTRACT: Le genre de nématode Bulbocephalus Rasheed, 1966 (Nematoda, Physalopteridae) a été trouvé homonyme de Bulbocephalus Watson, 1916 (Apicomplexa) et, par conséquent, un nouveau nom, Rasheedia n. nom., est proposé pour le remplacer. Sur la base d’études en microscopie optique et électronique à balayage de spécimens prélevés dans le tube digestif de poissons perciformes de Nouvelle-Calédonie, deux nouvelles espèces de Rasheedia sont décrites : R. heptacanthi n. sp. chez Parupeneus heptacanthus (Mullidae) (hôte-type) et Dentex fourmanoiri (Sparidae) et R. novaecaledoniensis n. sp. chez Parupeneus indicus (Mullidae). Ces nouvelles espèces sont principalement caractérisées par le nombre de lobes œsophagiens protrusibles antérieurs (deux chez R. heptacanthi et quatre chez R. novaecaledoniensis), la structure de l’œsophage et la longueur des spicules. Un diagnostic modifié de Rasheedia et une clé pour les espèces de ce genre sont fournis. Trois espèces congénériques précédemment décrites sont transférées dans Rasheedia sous les noms R. deblocki (Le-Van-Hoa, Pham-Ngoc-Khué et Nguyen-Thi-Lien, 1972) n. comb., R. inglisi (Rasheed, 1966) n. comb. et R. pseudupenei (Vassiliadès & Diaw, 1978) n. comb. Cestocephalus Rasheed, 1966 [genus inquirendum], incluant C. serratus Rasheed, 1966 et C. petterae (Le-Van-Hoa, Pham-Ngoc-Khué et Nguyen-Thi-Lien, 1972) n. comb., doit être considéré comme distinct de Rasheedia. Les noms Pseudomazzia Bilqees, Ghazi & Haseeb, 2005 et P. macrolabiata Bilqees, Ghazi & Haseeb, 2005, établis pour un nématode ressemblant un peu à Rasheedia spp., devraient être considérés comme nomina dubia. Rasheedia heptacanthi n. sp. et R. novaecaledoniensis n. sp. sont les premiers Physalopteridae rapportés de poissons dans les eaux de Nouvelle-Calédonie.

Institut Systématique Évolution Biodiversité Muséum National d'Histoire Naturelle CNRS Sorbonne Université EPHE 57 rue Cuvier CP 51 75005 Paris France

Institute of Parasitology Biology Centre of the Czech Academy of Sciences Branišovská 31 370 05 České Budějovice Czech Republic

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