Heptagenia is a genus of flatheaded mayflies in the family Heptageniidae. There are at least 20 described species in Heptagenia.
Callibaetis is a genus of small minnow mayflies in the family Baetidae. There are at least 30 described species in Callibaetis.
Camelobaetidius is a genus of small minnow mayflies in the family Baetidae. There are at least 40 described species in Camelobaetidius.
Cloeodes is a genus of mayflies in the family Baetidae.
Fallceon is a genus of blue-winged olives in the family of mayflies called Baetidae. There are about 19 described species in Fallceon.
Heterocloeon is a genus of small minnow mayflies in the family Baetidae. There are about nine described species in Heterocloeon.
Labiobaetis is a genus of mayflies in the family Baetidae.
Paracloeodes is a genus of small minnow mayflies in the family Baetidae. There are at least 20 described species in Paracloeodes.
Traverella is a genus of pronggilled mayflies in the family Leptophlebiidae.
Neoephemeridae is a family of large squaregill mayflies in the order Ephemeroptera. There are at least four genera and about 17 described species in Neoephemeridae.
Drunella is a genus of spiny crawler mayflies in the family Ephemerellidae. There are at least 20 described species in Drunella.
Drunella spinifera is a species of spiny crawler mayfly in the family Ephemerellidae. It is found in southwestern and northern Canada and the western United States and Alaska.
Serratella is a genus of spiny crawler mayflies in the family Ephemerellidae. There are at least 20 described species in Serratella.
Plauditus is a genus of small minnow mayflies in the family Baetidae. There are about 10 described species in Plauditus.
Maccaffertium is a genus of flatheaded mayflies in the family Heptageniidae. There are at least 20 described species in Maccaffertium.
Iswaeon is a genus of small minnow mayflies in the family Baetidae. There are at least three described species in Iswaeon.
Teloganopsis is a genus of spiny crawler mayflies in the family Ephemerellidae. There are about 17 described species in Teloganopsis.
Nigrobaetis is a genus of small minnow mayflies in the family Baetidae. There are more than 30 described species in Nigrobaetis, found in Europe, Africa, and Asia.
