Physalaemus cuvieri Fitzinger, 1823 occurs in Brazil, Paraguay and Argentina. In order to describe the helminth fauna of these anurans in southern Brazil, 68 specimens were captured in Campo Belo do Sul and Anita Garibaldi, State of Santa Catarina, and in Bom Jesus, State of Rio Grande do Sul, between May 2009 and January 2010. The anurans were taken alive to the laboratory where they were anesthetized and necropsied. Monogeneans identified as Polystoma cuvieri Vaucher, 1990 were found in the urinary bladder with a prevalence of 31.86% and a mean intensity of 2.06 helminths/host. In the same location of this study, other anuran species where captured and examined for helminths, but P. cuvieriwas found exclusively in Ph. cuvieri. This result may indicate a high parasite/host specificity.

Sesenta ejemplares de Scinax fuscovarius (Lutz, 1925) fueron colectados entre mayo de 2009 y octubre de 2011 en Campo Belo do Sul, Estado de Santa Catarina, Brasil y necropsiados para el estudio de sus helmintos parásitos. Fueron halladas solamente cuatro especies de helmintos: Pseudoacanthocephalus sp. Petrochenko, 1958, Cosmocerca brasiliense Travassos, 1925, C. parva Travassos, 1925 and Physaloptera sp. Rudolphi, 1819. Las hembras de cosmocércidos no pudieron ser determinadas debido a la falta de caracteres taxonómicos. Solamente el 30% de los anuros estuvieron parasitados. Scinax fuscovarius presentó baja prevalencia, intensidad de infección y riqueza parasitaria. El sexo y el tamaño de S. fuscovarius no influyeron en la prevalencia, abundancia y riqueza de especies de helmintos parásitos.

Terencistrum parvus Kritsky, Thatcher & Kayton, 1980 e T. paranaensis Karling, Lopes, Takemoto & Pavanelli, 2014, são registrados pela primeira vez em brânquias de Leporinus obtusidens Valenciennes, 1837 do Lago Guaíba, Rio Grande do Sul, região sul do Brasil. Tereancistrum paranaensis teve sua descrição original alterada para corrigir a posição da vagina, que foi descrita como dextra, quando na verdade é sinistra, além disso, alguns dados morfométricos foram revisados. A descrição de T. parvus é complementada com desenhos de um espécime montado in toto, detalhes da vagina e gônadas, bem como com medidas das estruturas internas dos espécimes coletados em brânquias de piava, L. obtusidens do Lago Guaíba.

Specimens and eggs of Temnocephala pereirai Volonterio, 2010 found on Trachemys dorbigni (Duméril & Bibron, 1835), were reported for the first time extending the known geographical distribution of T. pereirai from Uruguay to southern Brazil. Sixteen turtles were collected from a dam at 'Centro Agropecuário da Palma', Universidade Federal de Pelotas (UFPel), Municipality of Capão do Leão, State of Rio Grande do Sul, Brazil. The helminthes were fixed according to our standard protocols. Juvenile and adult temnocephalans were translucent and without the red-eye pigmentation. The worms were living in the inner corners of the plastron, near the legs, together with the eggs, and in the center of the plastron. Eggs were elongated, thick-shelled, with a small and subpolar filament. The most distinctive features of this species were: 1. cirrus's introvert proximal portion with spines from...