Mayflies of the United States
Mayflies of Clark County, Ohio
Species denoted with an asterisk (*) are unconfirmed or dubious records.
Caenidae
No Common Name -- (Caenis latipennis)
Ephemeridae
No Common Name -- (Hexagenia atrocaudata)
Heptageniidae
No Common Name -- (Stenacron interpunctatum) No Common Name -- (Stenonema modestum)
Leptohyphidae
No Common Name -- (Tricorythodes allectus)
Polymitarcyidae
No Common Name -- (Ephoron album)
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