Mayflies of the United States
Mayflies of Henry County, Iowa
Species denoted with an asterisk (*) are unconfirmed or dubious records.
Ephemeridae
No Common Name -- (Hexagenia bilineata) No Common Name -- (Hexagenia limbata) No Common Name -- (Pentagenia vittigera)
Polymitarcyidae
No Common Name -- (Ephoron album)
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