Cotylophoron panamensis (Trematoda: Paramphistomidae) in Mazama americana (Artiodactyla: Cervidae) free-living in remote areas in the Peruvian Amazon.

Trematodes of the genus Cotylophoron cause mucosal lesions in pre-stomachs and in small intestine in cattle, generating losses in animal production. In the Northeastern Peruvian Amazon, the presence of Cotylophoron panamensis in the 16.7% (4/24) in free-living red brocket deers (Mazama americana) in areas distant from livestock farming suggests the red brocket is a natural wild host of C. panamensis.