Mayflies of the United States
Mayflies of Union County, Oregon
Species denoted with an asterisk (*) are unconfirmed or dubious records.
Ameletidae
No Common Name -- (Ameletus cooki) No Common Name -- (Ameletus shepherdi) No Common Name -- (Ameletus similior) No Common Name -- (Ameletus tolae)
Leptohyphidae
No Common Name -- (Tricorythodes minutus)
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