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2cm long body not including 2 tail filaments. brown body. light brown kegs with darker feet


back yard


2 tail filaments excludes Families Leptophlebiidae, Ephemerellidae. Two pairs of wings excludes Baetidae. This leaves Heptageniidae and Ephemeridae (National Audubon Society Field Guide). I could not count the segments in the tarsi in my photos to distinguish these two families. According to Kaufman Field Guide there are 21 Families in North America.

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luteum stenonema
luteum stenonema 8 years ago

One last look It is sadleri species cause of the time of year.

luteum stenonema
luteum stenonema 8 years ago

With the large hind wing and the rear and middle legs being white that suggest to me that this is very likely (Isonychia bicolor) or sadleri .

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Ottawa, Ontario, Canada

Spotted on Sep 19, 2011
Submitted on Sep 19, 2011

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