2525 Entosphenus lethophagus (Hubbs, 1971) Petromyzontidae Northern lampreys Lampetrinae Petromyzontiformes Petromyzonti Pit-Klamath brook lamprey North America: Klamath River in south central Oregon (rare) and Pit River in northeastern California, USA. MOVI 30966-30968 1968 Entosphenus lethophagus