Ameletidae

Ameletus lineatus. 1998; Trumbull Co., Purdue Entomol. Res. Ctr.

Arthropleidae

Arthroplea bipunctata. 1975; Trumbull Co.; in shallow water in farm pond near Southington. Associated with false loosestrife. This is an extension of its range. Collected May 10-25, 1974. Adults emerged 3rd week of May. (McElravy & Foote, 1975); est. 41.3086, -80.9465

Baetidae

Baetis flavistriga. 09/11/2013. Mahoning R., 41.1544, -80.7061, A Dripps.
Baetis intercalaris. 10/01/2013. Mosquito Cr., 41.2506, -80.7633, A Dripps.
Baetis tricaudatis. 08/13/2013. Little Squaw Cr., 41.144153, -80.69573, S Macy.
Callibaetis ferrugineus ferrugineus. 1998. Trumbull Co. (Mosquito Cr.); Randolph & McCafferty (1998).
Labiobaetis frondalis. 07/18/2013. Duck Cr., 41.195033, -80.90605, A Dripps.
Neocloeon sp. 09/10/2013. Mahoning R., 41.2361, -80.8208, A Dripps.
Labiobaetis propinquus. 09/19/2013. Mahoning R., 41.2439, -80.865, A Dripps.

Caenidae

Caenis amica. 1998. Mahoning R., Mosquito Cr., Ohio Biol. Survey.
Caenis latipennis. 1998. Mosquito Cr., Pymatuniing Cr., Ohio Biol. Survey.

Heptageniidae

Stenacron interpunctatum. 1998. Mahoning R., Mill Cr.; USNM.
Stenonema exigiuum*. 09/19/2013. Mahoning R., 41.2439, -80.865, A Dripps.
Stenonema femoratum. 1998. Mahoning R., Mill Cr., Pymutuning Cr., USNM; 10/01/2013. Mosquito Cr., 41.2506, -80.7633, A Dripps.
Stenonema pulchellum*. 09/19/2013. Mahoning R., 41.2439, -80.865, A Dripps.
Stenonema terminatum*. 09/19/2013. Mahoning R., 41.2439, -80.865, A Dripps.
* These species are listed as Maccaffertium by Mayfly Central.

Leptohyphidae

Tricorythodes allectus. 09/19/2013. Mahoning R., 41.2439, -80.865, A Dripps.