“…The helminth fauna of Olive Ridley sea turtle, Lepidochelys olivacea (Eschscholtz, 1829) (Testudines: Chelonidae) has a gap of knowledge in Brazilian coast (Werneck & Silva 2016), and only Pyelossomum cochlear Looss, 1899 (Digenea: Pronocephalidae) has been described for this host so far in this area (Werneck et al, 2015). The genus Plesiochorus Looss, 1901 (Digenea: Gorgoderidae) is a exclusive parasite of sea turtles and only two species are currently accepted, Plesiochorus cymbiformis (Rudolphi, 1819) Looss, 1901, described in the green sea turtle Chelonia mydas Linnaeus, 1758 (Testudines: Chelonidae), the loggerhead sea turtle Caretta caretta Linnaeus, 1758, the Hawksbill sea turtle Eretmochelys im-bricata (Linnaeus, 1766) and in the Olive Ridley sea turtle (Blair & Limpus, 1982), and Plesiochorus elongatus Pigulevsky, 1953, described in loggerhead turtles (Werneck et al, 2019). Concerning the Neotropical region (see Werneck & Silva, 2016), P. cymbiformis has been described in green turtles from Panama (Caballero & Caballero, 1954) and Brazil (Binoti et al, 2016), in hawksbill turtles from Puerto Rico (Fischthal & Acholonu, 1976), in loggerhead sea turtles from Brazil (Werneck et al, 2018) and in Olive Ridley sea turtles from Costa Rica (Santoro & Morales, 2007), while P. elongatus has been reported in loggerhead turtles in Brazil (Werneck et al, 2019).…”