Baetidae

Acentrella parvula. 08/22/2011. Scippo Cr., 39.5397, -82.8456, J Freda.
Acerpenna pygmaea. 08/22/2019. Sycamore Cr., 39.8569, -82.7503, MJ Bolton.
Baetis flavistriga. 08/23/2019. Sycamore Cr., 39.9292, -82.7242, MJ Bolton.
Baetis intercalaris. 08/23/2019. Sycamore Cr., 39.9292, -82.7242, MJ Bolton.
Cloeon dipterum. 06/26/2014. Baldwin Run, 39.7086, -82.5842, MJ Bolton.
Neocloeon sp. 08/01/2016. Fetters Run, 39.729764, -82.58412, M Gray.
Labiobaetis propinquus. 06/25/2014. Baldwin Run, 39.71543, -82.58047, MJ Bolton.
Procloeon viridoculare. 08/22/2019. Sycamore Cr., 39.8569, -82.7503, MJ Bolton.

Ephemeridae

Ephemera varia. 1998. Fairfield Co., Ohio Biol. Survey.

Heptageniidae

Nixe perfida. 1998. Trib. Little Walnut Cr., OEPA. Stenonema exigiuum*. 08/22/2011. Scippo Cr., 39.5397, -82.8456, J Freda. Stenonema femoratum. 1998. Little Rush Cr., Colorado State U.; 08/23/2019. Sycamore Cr., 39.9292, -82.7242, MJ Bolton.Stenonema mexicanum integrum*. 08/22/2011. Scippo Cr., 39.5397, -82.8456, J Freda. Stenonema pulchellum*. 08/22/2011. Scippo Cr., 39.5397, -82.8456, J Freda. Stenonema vicarium*. 06/22/2017. Fetters Run, 39.729764, -82.58412, S Macy.
* This species is listed as Maccaffertium by Mayfly Central.

Leptohyphidae

Tricorythodes allectus. 09/16/2014. Blacklick Cr., 39.9173, -82.7866, MJ Bolton.

Leptophlebidae

Paraleptophlebia praepedita. 1993. Barneby Ctr., 09-VI-1993, adults, Ohio Biol. Survey.