Definitive hosts: this species infects a variety of mammals, including humans, canids, felids, mustelids, opossum, raccoons, swine, and ruminants
Site of infection: encysted in granulomas in the lungs
Typical size: 6-10 mm long
Distribution: North America east of the Rockies
First intermediate host: snails, Pomatiopsis lapidaria
Metacercariae: metacercariae encyst on the viscera, especially the heart muscle, in crayfish of the genus Cambarus