Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
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Fall Fund Drive


Genus Heptagenia

Heptageniid - Heptagenia Mayfly - Heptagenia flavescens unknown mayfly - Heptagenia flavescens Heptageniidae, Heptagenia marginalis - Heptagenia marginalis Heptagenia marginalis Oregon Mayfly - Heptagenia elegantula Ephemeroptera - unid. - Heptagenia Mayfly with a yellow cast - Heptagenia marginalis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Ephemeroptera (Mayflies)
Suborder Pisciforma
Superfamily Heptagenioidea
Family Heptageniidae (Flatheaded Mayflies)
Genus Heptagenia
Explanation of Names
Heptagenia Walsh 1863
12 spp. in our area(1), 26 spp. total(2)
holarctic & Oriental(2)