Ameletidae

Ameletus sp. 08/26/1982. Stonelick Cr., 39.1225, -84.1992, J Freda.

Baetidae

Baetis flavistriga. 07/30/2018. Trib. O'Bannon Cr., 39.257626, -84.22607, C McKnight.
Baetis intercalaris. 07/30/2018. Trib. O'Bannon Cr., 39.257626, -84.22607, C McKnight.
Diphetor hageni. 07/26/2018. Trib. E.Fk. Miami R., 39.01003, -84.14143, C McKnight.
Heterocloeon amplum. 1979; Clermont Co. Co.; Morihara & McCafferty, 1979, as Baetis amplus).
Heterocloeon (Jubilatum) amplum. 1979. Clermont Co., as Baetis amplus, Moriihara & McCafferty (1979a).
Labiobaetis propinquus. 08/15/2012. E.Fk. Little Miami R., 39.060052, -84.17874, E Moore.
Neocloeon sp. 07/25/2018 . Trib. E.Fk. Little Miami R., 39.03328, -84.12769, C McKnight.
Paracloeodes fleeki. 08/23/2012. E.Fk. Little Miami R., 30.0964, -84.0403, J Freda.
Procloeon viridoculare 09/09/2014. Bullskin Cr., 38.8008, -84.0586, C McKnight.

Baetiscidae

Baetisca lacustris. 1981. Ohio R., Pescador & Berner (1981).

Caenidae

Caenis amica. 1998. Backbone Cr., E. Fk. Little Miami R., Ohio Biol. Survey,
Caenis latipennis. 1998. (Bullskin Cr., Nine Mile Cr., Rock Run, Stonelick Cr. Sugarcamp Run, Ten Mile Cr., Ohio Biol. Survey.
Caenis hilari. 1995. Ohio R. at Meidahl Lock and Dam), VII-25-1995, (adults), Ohio Biol. Survey.

Ephemeridae

Hexagenia limbata. 1998. Big Run, E. Fk. Little Miami R., Ohio Biol. Survey.
Hexagena bilineata. 1998. Big Indian Cr., Bullshin Cr., Ohio R., Ohio Biol. Survey.

Heptageniidae

Leucrocuta hebe. 1998. Dry Run, Stonelick Cr., Ohio Biol. Survey.
Leucrocuta walshi. 1998. trib. Lick Fork, Ohio Biol. Survey.
Nixe inconspicua. 1975. E. Fk Little Miami R. at P&G ESF,. SR 50, OEPA.
Stenonema exigiuum.* 08/24/2012. D.Fk. Little Miami R., 39.0525, -84.05, C McKnight.
Stenonema mexicanum integrum.* 1974. Ohio R., Lewis (1974).
Stenonema modestum.* 1998. Backbone Cr., E. Fork Little Miami R., Stonelick Cr., Ohio Biol. Survey.
Stenonema pulchellum.* 09/09/2014. Bullskin Cr., 38.8008, -84.0586, C McKnight.
Stenonema terminatum.* 10/26/2012. E. Fk. Little Miami R., 39.0589, -84.0517, E Moore.
*These species area are still listed as Maccaffertium by Mayfly Central.
Stenacron interpunctatum. 1974. Little Miami R., Shayler Run Cr., Lewis (1974).
Stenacron minnitonka.* 1974. Kain Run, Little Miami R, Lewis (1974).

Isonychiidae

Isonychia rufa. 1935. Traver, 1935.

Leptohyphidae

Tricorythodes allectus. 1998. Dry Run, Ohio Biol. Survey. 10/26/2012. E.Fk. Little miami R., 39.0589, -84.0517, E Moore.

Leptophlebiidae

Choroterpes basalis. 09/09/2014. W.Br. Bullskin Cr., 38.8358, -84.0517, C McKnight.

Polymitarcyidae

Ephoron leukon. 1995. Backbone Cr., off SR 222 near confluence with Little Miami R., VIII-15-1995 (adult); Clermont Co.; ( E. Fork Little Miami R. at Rt 22 canoe launch; E. Fork Little Miami R. off Binning Re. E of SR 222, VIII-15,1995 (adults); E. Fork Little Miami R. S. of SR 50 off Tech Dr, VIII-15-1995 (adults); J. Trybula (1995).

Potamanthidae

Anthopotamus myops. 1998. Backbone Cr.; E. Fork Little Miami R.; Stonelick Cr., Ohio Biol. Survey.