Neocucullanus neocucullanus Travassos, Artigas et Pereira, 1928 (Nematoda: Cucullanidae) from the Characidae fish, Brycon hilarii Valenciennes, 1850, from Brazil

during investigation on the helminth parasites from brycon hilarii valenciennes, 1850 (characiformes, characidae), from river juba, tangará da serra, state of mato grosso, brazil, several specimens of the nematode neocucullanus travassos, artigas et pereira, 1928 were detected. a detailed study of this material, including scanning electron microscopy, allowed to identify these nematodes as n. neocucullanus travassos, artigas et pereira, 1928 and to confirm n. multipapillatus petter, 1989 as a junior synonym of n. neocucullanus.