Checklist of the California species of Ephemeroptera Ameletidae Ameletus Eaton, 1885 amador Mayo, 1939 bellulus Zloty, 1996 celer McDunnough, 1934 cooki McDunnough, 1929 dissitus Eaton, 1885 majasculus Zloty, 1996 minimus Zloty and Harper, similior McDunnough, 1928 sparsatus McDunnough, 1931 suffusus MCDunnough, 1936 validus McDunnough, 1923 velox Dodds, 1923 vernalis McDunnough, 1924 Ametropodidae Ametropus Albarda, 1878 ammophilus Allen and Edmunds, 1976 Baetidae Acentrella Bengtsson, 1912 insignificans (McDunnough, 1926) turbida (McDunnough, 1924) thermophilos (McDunnough, 1926) Apobaetis Day, 1955 etowah (Traver, 1935) Baetis Leach, 1815 adonis Traver, 1935 bicaudatus Dodds, 1923 brunneicolor McDunnough, 1925 flavistriga McDunnough, 1921 notos Allen and Murvosh, 1987 Aquatic Insects of California, Essig Museum of Entomology tricaudatus Dodds, 1923 Callibaetis Eaton, 1881 californicus Banks, 1900 ferrugineus (Walsh, 1862) fluctuans (Walsh, 1862) pallidus Banks, 1900 pictus (Eaton, 1871) Centroptilum Eaton, 1869 bifurcatum McDunnough, 1924 conturbatum McDunnough, 1929 elsa Traver, 1935 Diphetor Waltz and McCafferty, 1987 hageni (Eaton, 1885) Fallceon Waltz and McCafferty, 1987 quilleri (Dodds, 1923) Caenidae Caenis Stephens, 1935 bajaensis Allen and Murvosh, 1983 latipennis Banks, 1907 Ephemerellidae Attenella Edmunds, 1971 delantala (Mayo, 1952) Caudatella Edmunds, 1959 heterocaudata (McDunnough, 1929) hystrix (Traver, 1934) jacobi (McDunnough, 1939) Drunella Needham, 1905 coloradensis (Dodds, 1923) doddsii (Needham, 1927) grandis (Eaton, 1884) pelosa (Mayo, 1951) Aquatic Insects of California, Essig Museum of Entomology spinifera (Needham, 1927) Ephemerella Walsh, 1863 inermis Eaton, 1884 infrequens McDunnough, 1924 maculata Traver, 1934 mollitia Seemann, 1927 Serratella Edmunds, 1959 levis (Day, 1954) micheneri (Traver, 1934) teresa (Traver, 1934) tibialis (McDunnough, 1924) Timpanoga Needham, 1927) hecuba Eaton, 1884 Ephemeridae Hexagenia Walsh, 1863 limbata (Serville, 1829) Heptageniidae Cinygma Eaton, 1885 dimicki McDunnough, 1934 integrum Eaton, 1885 Cinygmula McDunnough, 1933 par (Eaton, 1885) ramaleyi (Dodds, 1923) retuculata McDunnough, 1934 tioga Mayo, 1952 uniformis McDunnough, 1934 Epeorus Eaton, 1881 albertae (McDunnough, 1924) deceptivus (McDunnough, 1924) dulciana (McDunnough, 1935) grandis (MCDunnough, 1924) longimanus (Eaton, 1885) Aquatic Insects of California, Essig Museum of Entomology Heptagenia Walsh, 1863 rubroventris Traver, 1935 Ironodes Traver, 1935 californicus (Banks, 1924) nitidus (Eaton, 1885) Nixe Flowers, 1980 criddlei (McDunnough, 1927) kennedyi (McDunnough, 1924) Rithrogena Eaton, 1881 hageni Eaton, 1885 morrisoni (Banks, 1924) undulata (Banks, 1924) Isonychiidae Isonychia Eaton, 1871 velma Needham, 1932 Leptohyphidae Tricorythodes Ulmer, 1920 minutus Traver, 1935 Leptophlebiidae Choroterpes Eaton, 1881 terratoma Seemann, 1927 Paraleptophlebia Lestage, 1917 bicornuta (McDunnough, 1926) debilis (Walker, 1853 gregalis (Eaton, 1884) memorialis (Eaton, 1884) Aquatic Insects of California, Essig Museum of Entomology Siphlonuridae Siphlonurus Eaton, 1868 columbianus McDunnough, 1925 occidentalis (Eaton, 1885) spectabilis Traver, 1934 Aquatic Insects of California, Essig Museum of Entomology.