Plagiorchis massino Petrov and Tikhonov, 1927

This fluke was originally described from dogs and cats in Armenia and Kazakistan. It has also been reported from a single cat found infected in Newfoundland, Canada (Smith FR, Threllfall W. 1973. Helminths of some mammals from Newfoundland. Am Midl Nat 90:215-218.). The life cycle probably involves a snail as the first intermediate host and an insect or a snail as the second intermediate host. The cats would have become infected by ingesting the second intermediate host.