Baetidae

Acerpenna pygmaea. 07/18/2017. Walnut Cr., 40.5397, -81.6906, S Macy.
Baetis flavistriga. 08/12/2019. Trib. Indian Trail Cr., 40.58, -81.7242, E Moore.
Baetis intercalaris. 09/12/2017. Walnut Cr., 40.5614, -81.6747, C McKnight.
Labiobaetis frondalis. 08/12/2019. Trib. Indian trail Cr., 40.58, -81.7242, E Moore.
Labiobaetis propinquus. 08/24/2017. Middle Fk. Sugar Cr., 40.6406, -81.6756, C McKnight.
Neocloeon sp. 08/12/2019. Trib. Indian Trail Cr., 40.58, -8.7242, E Moore.

Ephemeridae

Hexagenia atrocaudata. 08/05/2009. Wolf Cr., 40.4769, -82.0528, MJ Bolton.

Heptageniidae

Stenonema exigiuum*. 08/24/2017. Middle Fk. Sugar Cr., 40.6406, -81.6756, C McKnight.
Stenonema femoratum. 09/21/2016. W.Br. Huron R., 41.2808, -82.6756, C McKnight.
Stenonema mexicanum integrum*. 07/18/2017. Crabapple Cr., 40.6417, -81.6925, C McKnight.
Stenonema pulchellum*. 08/24/2017. Middle Fk. Sugar Cr., 40.6406, -81.6756, C McKnight.
Stenonema terminatum*. 09/12/2017. Walnut Cr., 40.5614, -81.6747, C McKnight.
Stenonema vicarium*. 08/12/2019. Trib. Indian Trail Cr., 40.58, -81.7242, E Moore.
* These species are listed as Maccaffertium by Mayfly Central.

Leptohyphidae

Tricorythodes allectus. 09/12/2017. Walnut Cr., 40.5614, -81.6747, C McKnight.

Leptophlebidae

Leptophlebia cupida. 1985. Killbuck Cr. Hall (1985).

Siphlonuridae

Siphlonurus typicus. 1985. Killbuck Cr., Hall (1985)