Baetidae

Acerpenna pygmaea. 09/07/2017. Cedar Cr/Wards Canal, 41.6128, -83.3969, MJ Bolton.
Baetis flavistriga. 09/07/2017. Cedar Creek, 41.6828, -83.3969, MJ Bolton.
Baetis intercalaris. 09/07/2017. Cedar Cr., 41.6128, -83.3969, MJ Bolton.
Callibaetis fluctuans. 1995. Ottawa Co. (L. Erie, Sandusky Bay at Winous Point Shooting Club Site #1, marsh), VIII-31-1995 (adults), Ohio Biol. Survey.
Procloeon viridoculare. 09/05/2017. Toussaint Cr., 41.5014, -83.3385, MJ Bolton.

Caenidae

Caenis amica. L. Erie, Ohio Biol. Survey; Richland Co., Purdue Entomol. Res. Survey. Caenis latipennis. 1990. L. Erie, Provonsha (1990).

Ephemeridae

Ephemera simulans. 1962. L. Erie, Britt (1962).
Hexagena bilineata. 1926. L. Erie, Wiebe (1926).
Hexagenia limbata. L. Erie, Ross Co., Spieth (1941).
Hexagenia rigida. 1942. L. Erie, Shelford & Boesel (1942), 1944. L. Erie, Lyman (1944)

Heptageniidae

Stenonema femoratum. 1942. Ottawa Co. (L. Erie), Shelford& Boesel (1942); 09/07/2017. Toussant Cr., 41.5014, -83.3383, MJ Bolton.
Stenonema pulchellum*. 1942. Lake Erie, Shelford & Boessel (1942).
* This species is listed as Maccaffertium by Mayfly Central.

Polymitarcyidae

Ephoron album. 1962. Lake Erie, Brill (1962).