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Yellow Quills

Scientific Names
MatchScientific Name
**Epeorus
**Epeorus vitreus

Like most common names, "Yellow Quill" can refer to more than one taxon. They're previewed below, along with 5 specimens. For more detail click through to the scientific names.

Mayfly Genus Epeorus

These are sometimes called Yellow Quills.
There is remarkable variety of form and color within this prolific genus of fast-water mayflies. Different species are found across the country, and several cause good hatches. Fly anglers are likely to encounter the lesser species on occasion, too.

The best Epeorus hatch in the East is Epeorus pleuralis, the famous Quill Gordon, the first abundant large mayfly hatch of the year. Epeorus vitreus comes a little later and is important in both the East and Midwest.

In the West, Epeorus longimanus dominates in fast, high-altitude streams, while Epeorus albertae inhabits slower and lower waters.
Epeorus (Little Maryatts) Mayfly NymphEpeorus (Little Maryatts) Mayfly Nymph View 9 Pictures
Collected May 6, 2007 from in
Added to Troutnut.com by on May 18, 2007
Male Epeorus frisoni Mayfly DunMale Epeorus frisoni  Mayfly Dun View 9 PicturesI collected this male dun together with a female spinner, a female dun, and another male dun.
Collected September 6, 2006 from in
Added to Troutnut.com by on October 3, 2006
Female Epeorus vitreus (Sulphur) Mayfly SpinnerFemale Epeorus vitreus (Sulphur) Mayfly Spinner View 9 Pictures
Collected September 19, 2006 from in
Added to Troutnut.com by on October 4, 2006

Mayfly Species Epeorus vitreus

These are sometimes called Yellow Quills.
This is the second most common Epeorus species in the East and Midwest. Most anglers will encounter sporadic hatches of Epeorus vitreus once in a while, and sometimes a more concentrated emergence causes a good rise of fish.
Epeorus vitreus (Sulphur) Mayfly NymphEpeorus vitreus (Sulphur) Mayfly Nymph View 6 Pictures
Collected February 7, 2004 from in
Added to Troutnut.com by on January 25, 2006
Male Epeorus vitreus (Sulphur) Mayfly DunMale Epeorus vitreus (Sulphur) Mayfly Dun View 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.
Collected September 2, 2004 from in
Added to Troutnut.com by on January 25, 2006
Female Epeorus vitreus (Sulphur) Mayfly SpinnerFemale Epeorus vitreus (Sulphur) Mayfly Spinner View 9 Pictures
Collected September 19, 2006 from in
Added to Troutnut.com by on October 4, 2006
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