Baetidae

Acentrella turbida. 09/12, 14/2017. Portage Co., Cuyahoga R., 41.245, -81.286; 41.1369, -81.4183, C McKnight, E Moore.
Anafroptilum victoriae. 07/13/2018. Portage Co. Trib. Cuyahoga R., 41.2753, -81.2215, MJ Bolton.
Baetis flavistriga. 08/07/2019. Trib. W.Br. Mahoning R., 41.1258, -81.1297, MJ Bolton.
Baetis intercalaris. 08/28/2018. Breakneck Cr., 41.1394, -81.2708, C McKnight.
Diphetor hageni. 08/13/2018. Potter Cr., 41.0418, -81.2958, C McKnight.
Iswaeon anoka. 08/28/2018. Breakneck Cr., 41.1445, -81.30773, C McKnight.
Labiobaetis frondalus. 1998. Tinkers Cr., OEPA; 08/14/2018. Tinkers Cr., 41.215725, -81.37301, C McKnight.
Neocloeon sp. 08/28/2018. Breakneck Cr., 41.1394, -81.2708, C McKnight.
Labiobaetis propinquus. 09/14/2017. Cuyahoga R., 41.2926, -81.22, MJ Bolton.
Paracloeodes minutus. 09/12/2017. Cuyahoga R., 41.1494, -81.3675, C McKnight.
Plauditus, cestus. 09/18/2013. Sand Cr., 41.212, -81.0428, M Gray.
Procloeon viridoculare. 08/28/2018. Breakneck Cr. 41.1394, -81.2708, C McKnight.

Ephemerellidae

Eurylophella temporalis. 06/24/2013. Trib. Sand Cr., 41.2033, -81.0671, M Gray.

Ephemeridae

Hexagenia limbata. 1998. Portage Co., U.S. Nat'l Museum

Heptageniidae

Stenonema exigiuum*. 08/28/2018. Congress Lake Outlet, 41.100026, -81.30057, C McKnight.
Stenonema femoratum. 07/13/2018. Trib. Cuyahoga R., 41.2409974, -81.30107, MJ Bolton.
Stenonema ithaca*. 09/26/2012. Aurora Branch, 41.304155, -81/31063, A Dripps.
Stenonema pulchellum*. 08/28/2018. Breakneck Cr., 41.1394, -81.2708, C McKnight.
Stenonema terminatum*. 08/14/2018. Breakneck Cr., 41.169486, -81.33769, C McKnight.
Stenonema vicarium*. 08/14/2018. Tinkers Cr., 41.215725, -81.37301, C McKnight.
* These species are listed as Maccaffertium by Mayfly Central.

Leptohyphidae

Tricorythodes allectus. 08/14/2018. Breakneck Cr., 41.169486, -81.33769, C McKnigh

Leptophlebidae

Paraleptophlebia ontario. 1998. Portage Co., OEPA.