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For Insects, Spiders & Their Kin
For the United States & Canada
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Species Ephemera simulans

Mayfly - Ephemera simulans - male Mayfly - Ephemera simulans Mayfly - Ephemera simulans - male Mayfly? - Ephemera simulans - male Ephemeroptera - Ephemera simulans Dark brown mayfly on white - Ephemera simulans Pennsylvania Dun for ID - Ephemera simulans mayfly - Ephemera simulans - male
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Ephemeroptera (Mayflies)
Suborder Furcatergalia
Infraorder Scapphodonta
Superfamily Ephemeroidea
Family Ephemeridae (Common Burrower Mayflies)
Genus Ephemera
Species simulans (Ephemera simulans)
Other Common Names
called "Brown Drake" but this name refers to more than one taxon
Explanation of Names
Ephemera simulans Walker 1853
across NA (our most widespread sp. of the genus)(1) map(2)
Life Cycle
Nymphs mature in one year in most places, but sometimes they take two.
Internet References