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Superfamily Heptagenioidea

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Mayfly - Heptageniidae? - Stenacron orange mayfly - Stenacron Stream Mayfly - Stenacron Mayfly - Stenacron - male Mayfly - Stenacron - male On Mohawk River - Stenacron Can't Tell - Stenacron Can't Tell - Stenacron Mayfly, unsure of type - Stenacron - male Mayfly - Stenacron Heptageniidae, genus Stenacron - Stenacron Heptageniidae, genus Stenacron - Stenacron Mayfly July 4, downtown Philadelphia - Stenacron Mayfly, downtown Philadelphia - Stenacron Mayfly, downtown Philadelphia - Stenacron Mayfly, downtown Philadelphia - Stenacron Mayfly, downtown Philadelphia - Stenacron Mayfly - Stenacron - female Bizarre little mayfly - Stenacron - male Stream Mayfly - unident - Stenacron - male stream mayfly - Stenacron - male Mayfly - Stenacron - male Unknown - Stenacron Mayfly - Stenacron

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