Heptageniidae Needham, 1901
Cinygmula gartrelli McDunnough, 1934
Cinygmula kootenai McDunnough, 1943
Cinygmula mimus (Eaton, 1885)
Cinygmula par (Eaton, 1885)
Cinygmula ramaleyi (Dodds, 1923)
Cinygmula reticulata McDunnough, 1934
Cinygmula subaequalis (Banks, 1914)
Cinygmula tarda (McDunnough, 1929)
Cinygmula tioga Mayo, 1952
Cinygmula uniformis McDunnough, 1934
