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Mayfly Genus Epeorus (Little Maryatts)

Taxonomic Navigation -?-
Kingdom Animalia (Animals)
» Phylum Arthropoda (Arthropods)
» Class Insecta (Insects)
» Order Ephemeroptera (Mayflies)
» Family Heptageniidae (March Browns, Cahills, Quill Gordons)
» Genus Epeorus (Little Maryatts)
Species in EpeorusNumber of SpecimensNumber of Pictures
Epeorus albertaePink Lady00
Epeorus deceptivus00
Epeorus fragilis00
Epeorus grandis00
Epeorus longimanusSlate Brown Dun00
Epeorus pleuralisQuill Gordon544
Epeorus punctatus00
Epeorus suffusus00
Epeorus vitreusSulphur1040

10 species aren't included.
Common Names
Pictures Below

This is page 2 of specimens of Epeorus. Visit the main Epeorus page for:

  • The behavior and habitat of Epeorus.
  • 9 underwater pictures of Epeorus.
  • 3 streamside pictures of Epeorus.

29 Mayfly Specimens in the Genus Epeorus:

Specimen Page:1234
Epeorus pleuralis (Quill Gordon) Mayfly SpinnerEpeorus pleuralis (Quill Gordon) Mayfly SpinnerView 10 PicturesA few days earlier I photographed this same specimen as a dun. The changes between dun and spinner seem particularly dramatic in this species.
Region: Northeast
Collected Apr 30, 2007
Added May 3, 2007
Epeorus pleuralis (Quill Gordon) Mayfly SpinnerEpeorus pleuralis (Quill Gordon) Mayfly SpinnerView 10 PicturesI spent (Spent: The wing position of many aquatic insects when they fall on the water after mating. The wings of both sides lay flat on the water. The word may be used to describe insects with their wings in that position, as well as the position itself.) most of the day looking for Epeorus pluralis duns or spinners without any luck on the major Catskill rivers. Finally in the evening I arrived at a small stream somebody had recommended, and when I got out of the car I was happy to find that I had parked in the middle of a cloud of male spinners.
Region: Catskills
Collected Apr 19, 2006
Added Apr 22, 2006
Epeorus (Little Maryatts) Mayfly SpinnerEpeorus (Little Maryatts) Mayfly SpinnerView 10 PicturesI collected a female dun on the same day that probably belongs to the same species as this spinner.
Region: Northeast
Collected May 15, 2007
Added May 18, 2007
Epeorus (Little Maryatts) Mayfly DunEpeorus (Little Maryatts) Mayfly DunView 9 PicturesI collected this male dun together with a female spinner, a female dun, and another male dun.
Region: Catskills
Collected Sep 6, 2006
Added Oct 4, 2006
Epeorus (Little Maryatts) Mayfly DunEpeorus (Little Maryatts) Mayfly DunView 4 PicturesThis is my favorite mayfly from 2004, and it appears on my popular Be the Trout: Eat Mayflies products. Check them out!

Its identification is really up in the air. It might be a late-season vitreus dun but it may very well be one of the more obscure species in that genus.
Region: Catskills
Collected Sep 2, 2004
Added Jan 25, 2006
Epeorus pleuralis (Quill Gordon) Mayfly NymphEpeorus pleuralis (Quill Gordon) Mayfly NymphView 4 PicturesThis Epeorus pluralis dun is recently deceased in these photos. I decided not to photograph several lively, less mature nymphs. This one was ready to hatch, as indicated by the black wing pads (
The wing pads on this final instar Baetidae mayfly nymph are extremely dark.
The wing pads on this final instar Baetidae mayfly nymph are extremely dark.
Wing pad: A protrusion from the thorax of an insect nymph which holds the developing wings. Black wing pads usually indicate that the nymph is nearly ready to emerge into an adult.
)
. I believe it had not been dead long enough to lose its natural coloration.
Region: Catskills
Collected Apr 19, 2006
Added Apr 22, 2006
Epeorus (Little Maryatts) Mayfly NymphEpeorus (Little Maryatts) Mayfly NymphView 9 Pictures
Region: Catskills
Collected May 6, 2007
Added May 18, 2007
Epeorus vitreus (Sulphur) Mayfly DunEpeorus vitreus (Sulphur) Mayfly DunView 6 Pictures
Region: Upper Midwest
Collected May 28, 2005
Added May 24, 2006
Epeorus (Little Maryatts) Mayfly SpinnerEpeorus (Little Maryatts) Mayfly SpinnerView 10 PicturesThis spinner and hundreds of others like it were dancing over the road through a very narrow valley carved by a tiny, steep tributary of the trout stream I was fishing. I got strange looks from a few passers-by, standing around on the road with a butterfly net...
Region: Northeast
Collected May 9, 2007
Added May 18, 2007
Epeorus (Little Maryatts) Mayfly SpinnerEpeorus (Little Maryatts) Mayfly SpinnerView 8 PicturesI collected this female spinner together with a male dun, a female dun, and another male dun.
Region: Catskills
Collected Sep 6, 2006
Added Oct 4, 2006
Specimen Page:1234
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Last update July 19th, 2007.
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