ABSTRACT
Members of the family Microphallidae produce microphallidiasis in birds, and a few species cause the infection in mammals. Species belonging to Microphallus genus are characterized by their small genital atrium, which is without muscular suckers or alveoli. Lecithodendriidiasis is an infection with members of the family Lecithodendriidae Odhner, 1910. In their life cycle, the lecithodendriids utilize aquatic pulmonate snails as first intermediate hosts, and the cercariae develop in sporocysts; after emergence from the snail, they usually encyst in insects. Several genera are included in this family, among which are Lecithodendrium, Phaneropsolus, and Prosthodendrium. Flukes belonging to Lecithodendrium genus have a fusiform or oval body. Species belonging to Phaneropsolus genus are parasites of birds and mammals and have an oval body which is sometimes fusiform, with blunt-pointed or rounded extremities. The oral sucker is small and subterminal. The acetabulum is small, located in the middle third of body.
