Six species in this genus are recognized: •
Entosphenus folletti Vladykov &
Kott, 1976 (Modoc brook lamprey) •
Entosphenus lethophagus (
C. L. Hubbs, 1971) (Pit-Klamath brook lamprey) •
Entosphenus macrostomus (
Beamish, 1982) (Vancouver lamprey) •
Entosphenus minimus (
C. E. Bond &
T. T. Kan, 1973) (Miller Lake lamprey) •
Entosphenus similis Vladykov & Kott, 1979 (Klamath river lamprey) •
Entosphenus tridentatus (
J. Richardson, 1836) (Pacific lamprey) ==References==