A new species of Rondonia Travassos, 1920 (Nematoda: Atractidae) parasite of Metynnis lippincottianus (Cope) (Characiformes: Serrasalmidae) with an amended diagnosis of the genus, based on integrative analyses. Systematic Parasitology, 102(6), Oct 6 2025: 1-21. [Zoological Record Volume 162]