A new species of Phyllodistomum Braun, 1899 (Digenea: Gorgoderidae) from Rhamdia quelen (Quoy & Gaimard, 1824) (Siluriformes: Pimelodidae). Memorias do Instituto Oswaldo Cruz, 88(4), oct-dec 1993: 557-559. 557 [Zoological Record Volume 130]