Ameletidae

Ameletus lineatus. 1984. Belmont Co. Hall (1985).
Ameletus ludens. 1985. Belmont Co. Hall (1985).
Ameletus sp. 04/06/2011. , Trib. White Eyes Cr., 40.109478, -81.715022; 40.11672,-716801; 40.115986, -81.711111. MJ Bolton.

Baetidae

Anafroptilum minor group sp. 1. 09/12/2014. Birds Run, 40.1692, -81.6481, C McKnight.
Baetis flavistriga. 09/12/2014. Birds Run, 40.1692, -81.6481, L Hughes.
Baetis intercalaris. 09/26/2014. Trib. Wills Cr., 40.146089, -81.66261, MJ Bolton.
Baetisca lacustris. 1985; Guernsey Co. Hall (1985).
Baetis flavistriga. 1985 Guernsey Co., Hall (1985).
Callibaetis ferrugineus ferrugineus. 1985 Guernsey Co., Hall (1985).
Centroptilum alamance. 1985. Guernsey Co., as Cloeon alamance. Hall (1985).
Cloeon dipterum. 06/27/2012. Trib. Skull Fork, 40.078082, -81.25811, MJ Bolton.
Diphetor hageni. 04/16/2015. Trib. Salt Fork, 40.0049, -81.2316, MJ Bolton.
Heterocloeon amplum. 1998. Sugartree Fork, Randolph & McCafferty (1998).
Heterocloeon (Jubilatum) amplum. 1998. Sugartree Fork as Acentrella ampla, Purdue Entomol. Res. Ctr.
Labiobaetis frondalis. 1985; Guernsey Co. Hall (1985); 06/16/2015. Salt Fork Wills Cr., 40.00408, -81.2318, MJ Bolton.
Labiobaetis propinquus. 09/18/2014. Wills Cr., 40.168242, -81.64863, L Hughes.
Neocloeon sp. 06/16/2015. Salt Fk. Wills Cr., 40.00408, -81.12318, MJ Bolton.
Plauditus veteris. 1985; Guernsey Co. Hall (1985).
Procloeon rubropictum. 1985; Guernsey Co. Hall (1985).
Pseudocloeon frondale. 1985 Guernsey Co., Hall (1985).

Baetiscidae

Baetisca lacustris. 1985 Guernsey Co., Hall (1985).

Caenidae

Caenis latipennis. 1985 Guernsey Co., Hall (1985).
Sparbarus lacustris. 07/17/2014. Clear Fork, 40.1472, -81.4542, MJ Bolton.

Ephemerellidae

Eurylophella verisimilis. 1985 Guernsey Co., Hall (1985).
Eurylophella funeralis. 1985 Guernsey Co., Hall (1985).
Eurylophella bicolor. 1985 Guernsey Co., Hall (1985).

Ephemeridae

Hexagena bilineata. 07/29/2014. Brushy Fork, 40.1008, -81.4175, MJ Bolton.
Hexagenia limbata. 1985 Guernsey Co., Hall (1985); 09/12/2014. Birds Run, 40.1692, -81.6481, L Hughes.

Heptageniidae

Epeorus namatus. 1985 Guernsey Co., Hall (1985).
Nixe perfida. 1985 Guernsey Co., Hall (1985).
Stenonema exigiuum*. 1985. Seneca Fork Wills Cr., Hall (1985); 09/18/2014. Wills Cr., 40.168241, -81.64863, L Hughes.
Stenonema femoratum. 1985. Seneca Fork Wills Run, Hall (1985); 09/12/2014. Salt Fk. Wills Cr., 40.0578, -81.4147, L Hughes.
Stenonema mexicanum integrum*. 09/18/2014. Wills Cr., 40.168242, -81.64863, L Hughes.
Stenonema pulchellum*. 1985. Seneca Fork Wills Cr., Hall (1985); 09/09/2014. Leatherwood Cr., 40.021046, -81.56585, MJ Bolton.
Stenonema terminatum*. 1985 Guernsey Co., Hall (1985); 09/18/2014. Wills Cr., 40.168242, -81.64863, L Hughes.
Stenonema vicarium*. 1985. Seneca Fork Wills Cr., Hall (1985); 04/15/2016. Trib. Salt Fork, 40.0049, -81.2316, MJ Bolton.
Stenacron interpunctatum. 1985. Seneca Fork Wills Cr., Hall (1985).
*These species are listed as Maccaffertium by Mayfly Central.

Leptohyphidae

Tricorythodes allectus. 09/18/2014. Wills Cr., 40.168242, -81.64863, L Hughes.

Leptophlebidae

Choroterpes basalis. 07/30/2014. Sugartree Fork, 40.1344, -81.4353, L Hughes.
Habrophlebiodes americana. 07/29/2014. Turkey Run, 40.1644, -81.4106, MJ Bolton.
Leptophlebia cupida. 1985 Guernsey Co., Hall (1985).
Paraleptophlebia moerens. 1985 Guernsey Co., Hall (1985).
Paraleptophlebia strigula. 1985 Guernsey Co., Hall (1985).

Siphlonuridae

Siphlonurus typicus. 1985 Guernsey Co., Hall (1985).