Attributed to Stiles & Hassall (1898) by Pugachev (2003) but to Looss (1899) by Stiles & Hassall (1908). [details]
Pugachev (2003) lists this species as occurring in salmonids in fresh or brackish waters in Kamchatka. [details]
Pugachev (2003) lists this species as occurring in freshwater fishes (mainly salmonids) in Northern Asia. [details]
Pugachev (2003) lists this species as a synonym of P. folium. [details]