The first morphological description is made of all stages of the life cycle of a Paragonimus species infecting humans in Colombia. Larval stages were obtained both in vitro and from field collections. Adult Paragonimus spp. are described. The aquatic snail Aroapyrgus sp. serves as an intermediate host of this species, both naturally and experimentally, yielding rediae and cercariae. Crabs (Hypolobocera bouvieri monticola and H. emberarum) were found to be the natural second intermediate hosts, and individuals of another crab species (Strengeria sp.) were also infected in the laboratory.

Centrocestus formosanus (Digenea:Heterophyidae) se registra por primera vez para Colombia en caracoles y peces del lago del Jardín Botánico Joaquín Antonio Uribe, de la ciudad de Medellín. Las redias y cercarias se obtuvieron del gastrópodo Melanoides tuberculata morfo MAD. Las metacercarias se obtuvieron de las branquias de peces de las familias Cichlidae y Poeciliidae y los adultos del intestino de aves infectadas experimentalmente. La prevalencia del parásito en los caracoles adultos fue de 74%. Se observó que los caracoles parasitados eran estériles.

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Velez, l & V.E. Thatcher: Five species 01 Lecithodendriidae (Trematoda) in bats from Colombia, including three new genera. Three new neotropical genera and species 01 Lecithodendriidae (Trematoda) are described from Colombian bats. Stumiratrema umbilicata gen. et sp. nov. Irom Stumira lilium dillers from other genera in having an oval ventral depression, a dorso-ventrally curved cirrus and a genital pore lateral to the acetabulum Chiropterotrema antioquiense gen. et sp. nov. from CaroUia perspicillata is distinguished by having the acetabulum within a triangular ventral pit as well as an separation between the the male and lemale genital pores. Topsiturvitrema verticalia gen. et sp. nov. from CaroUia perspicillata has a diflerent orientation 01 the body, being nearly spherical but somewhat flatened in an anterior-posterior direction. This genus also has a deep ventral elelt separating two ventrallobes which are filled with eggs. Castroia silvai Travassos, 1928, is also reported from Anoura caudifer

A new species of temnocephalan is described from the branchial chambers of Valdivia serrata in Colombia as Temnocephala ivandarioisp. nov. The most distinctive characters of the new species are in the cirrus and the epidermal ‘excretory’ syncytial plates. In the present study, the terminology to describe the cirrus of species of Temnocephala is updated. Comparison between the shape of the cirrus of the temnocephalans associated with trichodactylid crabs is also provided.