title: Cucullanus bonaerensis n. sp. (Nematoda: Cucullanidae) parasitizing Urophycis brasiliensis (Pisces: Phycidae) from Argentinean waters.
abstract: A total of 8 specimens of Urophycis brasiliensis (Kaup, 1858) from waters off Mar del Plata, Argentina (38 degrees 08'S, 57 degrees 32'W), were examined for parasitic nematodes. A new nematode species, Cucullanus bonaerensis n. sp., is described (prevalence 50%, mean intensity 15.5). The new species differs from its congeners in the distribution pattern of caudal papillae (particularly fourth pair) and phasmids, length of the body and spicules, and by the position of the excretory pore (in the posterior third of esophagus). Species of Cucullanus, reported previously as C. heterochrous Rudolphi, 1812, and Cucullanus sp. from U. brasiliensis from Puerto Quequén, Argentina (38 degrees 37'S, 58 degrees 53'W), are considered as members of the new species.
authors.affiliation: Laboratorio de Parasitología, Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata, Funes 3350 (7600) Mar del Plata, Provincia de Buenos Aires, Argentina. lanfra@mdp.edu.ar
authors.forename: Ana L
authors.initials: AL
authors.lastname: Lanfranchi
authors.forename: Juan T
authors.initials: JT
authors.lastname: Timi
authors.forename: Norma H
authors.initials: NH
authors.lastname: Sardella
mesh_terms: D000818:Animals; D001118:Argentina / Q000453:epidemiology; D005260:Female; D005393:Fish Diseases / Q000453:epidemiology / Q000469:parasitology*; D005399:Fishes; D008297:Male; D009348:Nematoda / Q000033:anatomy & histology / Q000145:classification*; D009349:Nematode Infections / Q000453:epidemiology / Q000469:parasitology / Q000662:veterinary*; D015995:Prevalence