This parasite was first described in 1938 from the gut of starry flounder. It is known from that host in coastal waters of Oregon. The parasite's life cycle was discovered in 1971, and was found to require an invertebrate host, the amphipod crustacean Corophium spinicorne.
Distribution
Pacific coast of North America
Hosts
Marine flatfish (sole, flounder) and amphipod crustaceans
Life Cycle Diagram: 
Detection Methods:
gross pathology / gross clinical signs
Target tissue
gut