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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


Family Oligoneuriidae - Brushleg Mayflies

Homoeoneuria homoeoneuria - Homoeoneuria Homoeoneuria exoskeleton
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Ephemeroptera (Mayflies)
Suborder Pisciforma
Superfamily Heptagenioidea
Family Oligoneuriidae (Brushleg Mayflies)
9 spp. in 2 genera in North America, 54 spp. in 11 genera total(1)
Adults: forewing venation greatly reduced, with 3 or 4 longitudinal veins and few/no cross veins
Nymphs: femora and tibiae of forelegs with double row of long setae; gills on segment 1 ventral
across the world; in NA, sw. & w. US (south into Mexico), through Midwest, to se. US
Rivers, specific microhabitat varies with genus
Nymphs are collector-filterers, gather food particles using foreleg setae