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Genus Homoeoneuria

Homoeoneuria homoeoneuria - Homoeoneuria Homoeoneuria
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Ephemeroptera (Mayflies)
Suborder Pisciforma
Superfamily Heptagenioidea
Family Oligoneuriidae (Brushleg Mayflies)
Genus Homoeoneuria
Explanation of Names
Homoeoneuria Eaton 1881
4 spp. in our area(1), 7 spp. total(2)
body length: mature nymphs 8-12 mm, adults 6-11 mm
Adult: forewing with three longitudinal veins and no crossveins; three caudal filaments
Nymph: gill plates on segments 2-7 slender and elongate; forelegs without claws
New World(2); in our area, sw. & w. US (north to se. Montana) through Midwest to se. US
Mid-sized to large sandy rivers; nymphs found in loose- or shifting sand
Across much of range, adults emerge in mid- to late summer; adults fly just above water surface, difficult to capture when present in low numbers
Life Cycle
Unknown but early instars present in early to mid-summer, mature nymphs present mid- to late summer at many sites
Print References
Pescador M.L., Peters W.L. (1980) A revision of the genus Homoeoneuria (Ephemeroptera: Oligoneuriidae). Transactions of the American Entomological Society 106: 357-393