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Insect Order Ephemeroptera (Mayflies)



Pictures Below ↓

This is page 43 of specimens of Ephemeroptera. Visit the main Ephemeroptera page for:

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

Pictures of 828 Mayfly Specimens:

Specimen Page:1...424344...84
Epeorus grandis Mayfly NymphEpeorus grandis Mayfly Nymph View 11 Pictures
Collected March 19, 2019 from the South Fork Snoqualmie River in Washington
Added to Troutnut.com by Troutnut on June 14, 2019
Female Callibaetis (Speckled Spinners) Mayfly DunFemale Callibaetis (Speckled Spinners) Mayfly Dun View 2 PicturesProbably Callibaetis ferrugineus.
Collected May 25, 2005 from Flathead Lake in Montana
Added to Troutnut.com by Bnewell on June 27, 2011
Ephemerella needhami (Little Dark Hendrickson) Mayfly NymphEphemerella needhami (Little Dark Hendrickson) Mayfly Nymph View 2 Pictures
Collected June 5, 2005 from Eighteenmile Creek in Wisconsin
Added to Troutnut.com by Troutnut on May 24, 2006
Male Rhithrogena undulata (Small Western Red Quill) Mayfly SpinnerMale Rhithrogena undulata (Small Western Red Quill) Mayfly Spinner View 13 PicturesThis male was collected at the same time as this female and is likely the same species.

It keys pretty clearly to Rhithrogena undulata using the key in Traver 1935, although the size is larger than expected for that species in that source.
Collected July 1, 2019 from the Madison River in Montana
Added to Troutnut.com by Troutnut on July 18, 2019
Female Callibaetis undatus (Speckled Spinner) Mayfly SpinnerFemale Callibaetis undatus (Speckled Spinner) Mayfly Spinner View 2 Pictures
Collected May 26, 2005 from the Flathead River-lower in Montana
Added to Troutnut.com by Bnewell on June 28, 2011
Callibaetis (Speckled Spinners) Mayfly DunCallibaetis (Speckled Spinners) Mayfly Dun View 2 Pictures
Collected May 30, 2005 from the S. Fk. Milk River in Montana
Added to Troutnut.com by Bnewell on June 28, 2011
Caenis (Angler's Curses) Mayfly NymphCaenis (Angler's Curses) Mayfly Nymph View 4 Pictures
Collected June 8, 2005 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on May 26, 2006
Ephemerella (Hendricksons, Sulphurs, PMDs) Mayfly NymphEphemerella (Hendricksons, Sulphurs, PMDs) Mayfly Nymph View 2 PicturesI found this specimen in the same collection as a similar one. Since I only have strange views of this one, it's possible that they're actually the same specimen and I somehow confused my picture-ordering and got the impression that they're different nymphs.
Collected June 8, 2005 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on May 26, 2006
Ephemerella needhami (Little Dark Hendrickson) Mayfly NymphEphemerella needhami (Little Dark Hendrickson) Mayfly Nymph View 2 PicturesI photographed three strange striped Ephemerella nymphs from the same trip on the same river: a black and olive one, this one, and a very very striped one. I have tentatively put them all in Ephemerella needhami for now.
Collected June 9, 2005 from the Bois Brule River in Wisconsin
Added to Troutnut.com by Troutnut on May 26, 2006
Maccaffertium mediopunctatum (Cream Cahill) Mayfly NymphMaccaffertium mediopunctatum (Cream Cahill) Mayfly Nymph View 2 Pictures
Collected June 8, 2005 from the Namekagon River in Wisconsin
Added to Troutnut.com by Troutnut on May 26, 2006
Specimen Page:1...424344...84
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BaetisBaetidaeEphemerellidaeHexagenia limbataChironomidaeHeptageniidaeEphemerella subvariaEphemerellaIsonychiaHydropsychidae
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