Ameletidae

Ameletus ludens. 1985 Muskingum Co., Hall (1985).
Ameletus sp. 05/16/2000. Trib to trib. to Muskingum R., 40.0425, -81.9531, MJ Bolton.

Baetidae

Baetis flavistriga. 07/03/2014. White Eyes Cr., 40.073053, -81.77396, MJ Bolton.
Baetis intercalaris. 09/25/2014. White Eyes Cr., 40.134658, -81.73598, L Hughes.
Diphetor hageni. 07/03/2014. White Eyes Cr., 40.073053, -81.77396, MJ Bolton.
Heterocloeon sp.
Wakatomika Cr., 40.1311, -82.1461, E Moore.
Neocloeon sp. 09/25/2014. White Eyes Cr., 40.134658, -81.73598, L Hughes.
Labiobaetis propinquus. 09/25/2014. White Eyes Cr., 40.134658, -81.73598, L Hughes.
Procloeon viridoculare. 09/25/2014. White Eyes Cr., 40.134658, -81.735982, L Hughes.

Ephemerelladae

Eurylophella temporalis. 1985 Muskingum Co., Hall (1985).

Ephemeridae

Ephemera simulans. 06/16/2008. Dry Riffle Run, 39.803926, -81.89146, D Eicher.
Ephemera varia. 07/03/2014. White Eyes Cr., 40.09402, -81.77145, L Hughes.
Litobrancha recurvata. 04/06/2011. Trib. White Eyes Cr., 40.120102, -81.7213, MJ Bolton.

Heptageniidae

Heptagenia marginalis. 09/13/2006. Muskingum R., 39.819056, -81.88942, M Gray. Leucrocuta maculipennis. 1985. Muskingum R., Hall (1985).
Stenonema femoratum. 1985. Muskingum Co., Hall (1985); 07/02/2014. Fox Cr., 39.992033, -81.7431, MJ Bolton.
Stenonema mexicanum integrum*. 1985. Muskingum R., Hall (1985).
Stenonema terminatum*. 1985. Muskingum R., Hall (1985).
Stenonema vicarium*. 09/25/2014. White Eyes Cr., 40.134658, -81.73598, L Hughes.
Stenacron interpunctatum. 1985. Little Muskingum R., Hall (1985).
* These species are listed as Maccaffertium by Mayfly Central.

Leptohyphidae

Tricorythodes allectus. 1985. Muskingum R., Hall (1985); 08/16/2010. Symmes Cr., 40.08294, -81.95363, A Dripps.

Leptophlebiidae

Habrophlebiodes americana. 07/03/2014. White Eyes Cr., 40.073053, -81.77396, MJ Bolton.