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Insect Order Ephemeroptera (Mayflies)

Pictures Below

This is page 72 of specimens of Ephemeroptera. Visit the main Ephemeroptera page for:

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

Pictures of 753 Mayfly Specimens:

Specimen Page:1...717273...76
Male Ameletus (Brown Duns) Mayfly SpinnerMale Ameletus (Brown Duns) Mayfly Spinner View 1 PicturesThis specimen is close to Ameletus vernalis but the wing coloration is missing.
Collected June 10, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on June 26, 2011
Female Paraleptophlebia (Blue Quills and Mahogany Duns) Mayfly AdultFemale Paraleptophlebia (Blue Quills and Mahogany Duns) Mayfly Adult View 1 PicturesThis female exhibits the dark chocolate color so common in this genus.
Collected June 5, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on June 26, 2011
Male Paraleptophlebia (Blue Quills and Mahogany Duns) Mayfly SpinnerMale Paraleptophlebia (Blue Quills and Mahogany Duns) Mayfly Spinner View 1 PicturesNear P. memorialis.
Collected June 15, 2011 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on June 26, 2011
Female Rhithrogena virilis Mayfly DunFemale Rhithrogena virilis  Mayfly Dun View 6 PicturesI'm guessing this one is Rhithrogena virilis based on collection of a male spinner of similar size and body configuration during the same trip.
Collected June 16, 2018 from the South Fork Snoqualmie River in Washington
Added to Troutnut.com by Troutnut on June 23, 2018
Female Cinygmula mimus Mayfly SpinnerFemale Cinygmula mimus  Mayfly Spinner View 1 Pictures
Collected May 20, 2012 from the Touchet River in Washington
Added to Troutnut.com by Bnewell on May 25, 2012
Maccaffertium modestum (Cream Cahill) Mayfly NymphMaccaffertium modestum (Cream Cahill) Mayfly Nymph View 2 PicturesI looked at this nymph closely under my crappy microscope. It has truncate (Truncate: Cut off. This is often used to describe the square appearance of the gills of Maccaffertium mayfly nymphs, for example, as opposed to the pointed gills of the closely related genus Stenacron.) as opposed to rounded gills, postero-lateral (Lateral: To the side.) spines only on abdominal segments 7-9, and oblique crossbars through the center of each sterna, not on the posterior (Posterior: Toward the back of an organism's body. The phrase "posterior to" means "in back of.") edge like on some of the other Maccaffertium species. As best I can tell from the keys this is either modestum or ithaca and from the distribution maps I've seen I'm guessing it's modestum.
Collected March 10, 2004 from unknown in Wisconsin
Added to Troutnut.com by Troutnut on January 19, 2006
Specimen Page:1...717273...76
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