Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Clickable Guide
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Upcoming Events

Discussion of 2018 gathering

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington


Genus Rhithrogena

mayfly - Rhithrogena - male mayfly larva - Rhithrogena impersonata Rhithrogena impersonata orange variant dorsal - Rhithrogena impersonata Rhithrogena Rhithrogena Rhithrogena sp. nymph - voucher specimen, in alcohol - Rhithrogena Mayfly - Rhithrogena Mayfly - Rhithrogena
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Ephemeroptera (Mayflies)
Suborder Pisciforma
Superfamily Heptagenioidea
Family Heptageniidae (Flatheaded Mayflies)
Genus Rhithrogena
Explanation of Names
Rhithrogena Eaton 1881
one of the largest mayfly genera, with 22 spp. in our area and >150 total(1)(2)
holarctic, by far more diverse in Asia(2)