Baetidae

Baetis flavistriga. 09/18/2013. Mahoning R., 41.0761, -80.6161, A Dripps.
Cloeon dipterum. 08/30/2011. N.Fk. Meander Cr., 41.049487, -80.84168, MJ Bolton.
Procloeon viridoculare. 08/19/2013. Meander Cr., 41.0478, -80.8275, A Dripps.

Ephemeridae

Hexagenia limbata. 08/30/2011. Meander Cr., 41.025, -80.8389, C McKnight.

Heptageniidae

Stenonema exigiuum*. 09/17/2013. Mahoning R., 41.105, -80.6638, A Dripps.
Stenonema femoratum. 09/18/2013. Mahoning R., 41.0761, -80.6161, A Dripps.
Stenonema pulchellum*. 09/18/2013. Mahoning R., 41.0761, -80.6161, A Dripps.
Stenonema terminatum*. 09/17/2013. Mahoning R., 41.105, -80.6638, A Dripps.
Stenonema vicarium*. 09/19/2013. Meander Cr., 41.0478, -80.8275, A Dripps.
* These species are listed as Maccaffertium by Mayfly Central.

Leptohyphidae

Tricorythodes allectus. 09/19/2013. Mahoning R., 41.03, -80.5192, A Dripps.