Baetidae

Acentrella turbida. 09/01/2015. Euclid Cr., 41.5819, -81.5589, S Macy. 08/29/2016., Chagrin R., 41.49877, -81.40069, MJ Bolton.; 09/12-13/2017. Cuyahoga R., 41.373264, -81.61479; 41.4178, -81.6417, E Moore.
Acerpenna pygmaea. 09/04/2018. Chippewa Cr., 41.317118, -81.5921, C McKnight.
Baetis flavistriga. 07/30/2019. Sagamore Cr., 41.3514, -81.5923, E Moore.
Baetis intercalaris. 07/30/2019. Sagamore Cr., 41.3514, -81.5923, E Moore.
Baetis tricaudatis. 07/30/2019. Sagammore Cr., 41.3514, -81.5923, E Moore.
Cloeon dipterum. 07/30/2019. Sagamore Cr., 41.3514, -81.5923, E Moore.
Diphetor hageni. 08/26/2014. Chagrin R., 41.434753, -81.38593, MJ Bolton.
Labiobaetis propinquus. 08/26/2014. Chagrin R., 41.440453, -81.37843, MJ Bolton.
Neocloeon sp. 07/30/2019. Sagamore Cr., 41.3514, -81.5923, E Moore.
Paracloeodes minutus. 09/12/2017. Cuyahoga R., 41.3567, -81.5961, C McKnight.
Procloeon viridoculare. 09/07/2017. Chagrin R.., 41.421919, -81.40004, MJ Bolton.

Ephemerellidae

Teloganopsis deficiens. 08/26/2014. Chagrin R., 41.440453, -81.37843, MJ Bolton.

Ephemeridae

Hexagenia limbata. 1941. Cuyahoga Co., Spieth (1941).

Heptageniidae

Heptagenia flavescens. 08/27/2014. Chagrin E., 41.49551, -81.40153, MJ Bolton. Heptagenia marginalis. 09/07/2017. Chagrin R., 41.421919, -81.40004, MJ Bolton. Stenacron interpunctatum. 1998. Cuyahoga Co. Ohio Biol. Survey
Stenonema exigiuum*. 09/13/2017. Cuyahoga R., 41.4097, -81.6344, C McKnight.
Stenonema femoratum. 07/30/2019. Sagamore Cr., 41.3514, -81.5923, E Moore.
Stenonema pulchellum*. 09/20/2017. Chagrin R., 41.517731, -81/403042, C McKnight.
Stenonema terminatum*. 09/05/2015. Tinkers Cr., 41.364894, -81.60862, C McKnight.
Stenonema vicarium*. 09/20/2017. Chagrin R., 41.517731, -81.40342, C McKnight.
*This species is listed as Maccaffertium by Mayfly Central.

Leptohyphidae

Tricorythodes allectus. 09/05/2018. Big Cr., 41.4506, -81. 7214, C McKnight.

Potamanthidae

Anthopotamus distinctus. 1941. Holotype. Chagrin Falls, (Chagrin R.); Bae & McCafferty (1991)