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Insect Order Ephemeroptera (Mayflies)

Pictures Below

This is page 78 of specimens of Ephemeroptera. Visit the main Ephemeroptera page for:

  • The behavior and habitat of Ephemeroptera.
  • 67 underwater pictures of Ephemeroptera.
  • 4 streamside pictures of Ephemeroptera.

Pictures of 820 Mayfly Specimens:

Specimen Page:1...777879...83
Rhithrogena Mayfly DunRhithrogena  Mayfly Dun View 1 Pictures
Collected March 27, 2010 from the Big Thompson River in Montana
Added to by Bnewell on June 26, 2011
Male Cinygmula mimus Mayfly AdultMale Cinygmula mimus  Mayfly Adult View 1 Pictures
Collected May 20, 2012 from the Touchet River in Washington
Added to by Bnewell on May 25, 2012
Drunella doddsii (Western Green Drake) Mayfly NymphDrunella doddsii (Western Green Drake) Mayfly Nymph View 1 PicturesThis is a photo of the ventral (Ventral: Toward or on the bottom.) surface of this nymph which acts to help hold the nymph on rock surfaces.
Collected July 5, 2007 from Many streams in Montana
Added to by Bnewell on June 26, 2011
Female Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly DunFemale Ephemerellidae (Hendricksons, Sulphurs, PMDs, BWOs) Mayfly Dun View 2 PicturesI've tentatively called this fragile, highly damaged dun a Serratella species. I had much better pictures of the species but lost them. It's about size 22, but good-sized trout were rising to this hatch; I suspect it has to do with the solid profile shown by the dark, almost-black wings that have given this hatch the name "Darth Vaders" among some Wisconsin anglers.
Collected July 14, 2004 from unknown in Wisconsin
Added to by Troutnut on January 25, 2006
Male Rhithrogena virilis Mayfly SpinnerMale Rhithrogena virilis  Mayfly Spinner View 8 PicturesI'm guessing this is Rhithrogena virilis based on resemblance to a similar specimen collected last year.
Collected June 16, 2018 from the South Fork Snoqualmie River in Washington
Added to by Troutnut on June 23, 2018
Specimen Page:1...777879...83
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