Mayflies of the United States
Mayflies of Sonoma County, California
Species denoted with an asterisk (*) are unconfirmed or dubious records.
Baetidae
No Common Name -- (Baetis alius) No Common Name -- (Baetis sulfurosus)
Ephemerellidae
No Common Name -- (Ephemerella mollitia)
Isonychiidae
No Common Name -- (Isonychia velma)
Leptohyphidae
No Common Name -- (Tricorythodes minutus)
Leptophlebiidae
No Common Name -- (Choroterpes terratoma) No Common Name -- (Paraleptophlebia helena)
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