Baetidae

Acerpenna pygmaea. 09/21/2016. W.Br. Huron R., 41.2808, -82.6756, C McKnight.
Acentrella turbida. 08/24/2016. W. Br. Huron R., 41.2456, -82.6914, C McKnight.
Baetis flavistriga. 09/21/2016. W.Br. Huron R., 41.2808, -82.6756, C McKnight.
Baetis intercalaris. 09/21/2016. W.Br. Huron R., 41.2808, -82.6756, C McKnight.
Diphetor hageni. 08/30/2016. W.Br. Huron R., 41.0211, -82.6667, C McKnight.
Neocloeon sp. 08/30/2016. W.Br. Huron R., 41.0211, -82.6667, C McKnight.
Plauditus dubius. 09/21/2016. W.Br. Huron R., 41.2867, -82.6428, C McKnight.
Procloeon viridoculare. 08/30/2016. W.Br. Huron R., 41.0211, -82.6667, C McKnight.

Ephemeridae

Hexagenia atrocaudata. 08/28/2002. Vermilion R., 41.225698, -82.38447, C McKnight.
Hexagenia limbata. 06/13/2016. Trib. W.Br. Huron R., 41.0096, -82.5716, C McKnight.

Heptageniidae

Leucrocuta hebe. Southwest Br. Vermilion R. OEPA.
Stenonema exigiuum*. 08/24/2016. W.Br. Huron R., 41.2456, -82.6914, C McKnight.
Stenonema femoratum. 09/21/2016. W.Br. Huron R., 41.2808, -82.6756, C McKnight.
Stenonema mediopunctatum*. 08/31/2016. E.Br. Huron R., 41.2756, -82.6369, C McKnight.
Stenonema pulchellum*. 09/21/2016. W.Br. Huron R., 41.2808, -82.6756, C McKnight.
Stenonema terminatum*. 09/21/2016. W.Br. Huron R., 41.2867, -82.6428, C McKnight.
Stenonema vicarium*. 08/31/2016. E.Br. Huron R., 41.1769, -82.6531, C McKnight.
* These species are listed as Maccaffertium by Mayfly Central.

Leptohyphidae

Tricorythodes allectus. 09/21/2016. W.Br. Huron R., 41.2808, -82.6756, C McKnight.

Leptophlebidae

Choroterpes basalis. 06/22/2016. Slate Run, 41.1333, -82.7858, C McKnight.