Red Quill Spinners
Scientific Names
| Match | Scientific Name |
| Ephemerella invaria | |
| Ephemerella subvaria | |
| Epeorus pleuralis | |
| Epeorus longimanus | |
| Cinygmula ramaleyi | |
| Rhithrogena undulata |
Like most common names, "Red Quill Spinner" can refer to more than one taxon. They're previewed below, along with 9 specimens. For more detail click through to the scientific names.
Mayfly Species Ephemerella invaria
These are often called Red Quill Spinners.
This species, the primary "Sulphur" hatch, stirs many feelings in the angler. There is nostalgia for days when everything clicked and large, selective trout were brought to hand. There is the bewildering memory of towering clouds of spinners which promise great fishing and then vanish back into the aspens as night falls. There is frustration from the maddening selectivity with which trout approach the emerging duns--a vexing challenge that, for some of us, is the source of our excitement when Sulphur time rolls around.
Ephemerella invaria is one of the two species frequently known as Sulphurs (the other is Ephemerella dorothea). There used to be a third, Ephemerella rotunda, but entomologists recently discovered that invaria and rotunda are a single species with an incredible range of individual variation. This variation and the similarity to dorothea make matching this hatch exceptionally tricky.
As the combination of two already prolific species, this has become the most abundant of all mayfly species in Eastern and Midwestern trout streams.
Ephemerella invaria is one of the two species frequently known as Sulphurs (the other is Ephemerella dorothea). There used to be a third, Ephemerella rotunda, but entomologists recently discovered that invaria and rotunda are a single species with an incredible range of individual variation. This variation and the similarity to dorothea make matching this hatch exceptionally tricky.
As the combination of two already prolific species, this has become the most abundant of all mayfly species in Eastern and Midwestern trout streams.
Ephemerella invaria (Sulphur) Mayfly Nymph
View 8 PicturesThis small Ephemerella invaria nymph was at least a month away from emergence.
View 8 PicturesThis small Ephemerella invaria nymph was at least a month away from emergence.Region: Catskills
Collected Apr 19, 2006
Added Apr 21, 2006
Female Ephemerella invaria (Sulphur) Mayfly Dun
View 6 Pictures
View 6 PicturesRegion: Upper Midwest
Collected May 28, 2005
Added May 24, 2006
Male Ephemerella invaria (Sulphur) Mayfly Spinner
View 12 Pictures
View 12 PicturesRegion: Upper Midwest
Collected Jun 3, 2005
Added May 25, 2006
See 40 more specimens...
Mayfly Species Ephemerella subvaria
These are often called Red Quill Spinners.
The Hendrickson hatch is almost synonymous with fly fishing in America. It has been romanticized by our finest writers, enshrined on an untouchable pedestal next to Theodore Gordon, bamboo, and the Beaverkill.
The fame is well-deserved. Ephemerella subvaria is a prolific species which drives trout to gorge themselves. Its subtleties demand the best of us as anglers, and meeting the challenge pays off handsomely in bent graphite and screaming reels. Ours may be the sport of gentlemen, but the gentleman may drool a little on his tie when he thinks of this hatch-to-come after a dismal fishless winter.
The fame is well-deserved. Ephemerella subvaria is a prolific species which drives trout to gorge themselves. Its subtleties demand the best of us as anglers, and meeting the challenge pays off handsomely in bent graphite and screaming reels. Ours may be the sport of gentlemen, but the gentleman may drool a little on his tie when he thinks of this hatch-to-come after a dismal fishless winter.
Ephemerella subvaria (Hendrickson) Mayfly Nymph
View 4 PicturesI've never seen this strange coloration on any Ephemerella subvaria nymph in a book before, but it's similar to several other specimens I collected on the same outing, including a smaller one that I photographed. They were outnumbered by the "normal" Ephemerella subvaria nymphs in the sample.
View 4 PicturesI've never seen this strange coloration on any Ephemerella subvaria nymph in a book before, but it's similar to several other specimens I collected on the same outing, including a smaller one that I photographed. They were outnumbered by the "normal" Ephemerella subvaria nymphs in the sample.Region: Northeast
Collected Mar 29, 2005
Added Apr 7, 2006
Male Ephemerella subvaria (Hendrickson) Mayfly Dun
View 9 PicturesI collected this male Hendrickson dun and a female in the pool on the Beaverkill where the popular Hendrickson pattern was first created. He is descended from mayfly royalty.
View 9 PicturesI collected this male Hendrickson dun and a female in the pool on the Beaverkill where the popular Hendrickson pattern was first created. He is descended from mayfly royalty.Region: Catskills
Collected Apr 19, 2006
Added Apr 22, 2006
Male Ephemerella subvaria (Hendrickson) Mayfly Spinner
View 11 PicturesI collected this beautiful male Hendrickson specimen as a dun, along with a female Hendrickson from the same hatch. Both molted into spinners in my house within a couple of days.
View 11 PicturesI collected this beautiful male Hendrickson specimen as a dun, along with a female Hendrickson from the same hatch. Both molted into spinners in my house within a couple of days.Region: Northeast
Collected Apr 23, 2007
Added Apr 25, 2007
See 31 more specimens...
Mayfly Species Epeorus pleuralis
These are sometimes called Red Quill Spinners.
This is the first really good dry-fly opportunity of the season for most Eastern anglers. They are large mayflies and they have good points of vulnerability both underwater and on the surface.
Epeorus pleuralis (Quill Gordon) Mayfly Nymph
View 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 (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.
View 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 (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
Male Epeorus pleuralis (Quill Gordon) Mayfly Dun
View 9 PicturesI kept this specimen after photographing it and it molted into a spinner in perfect condition, which I photographed here.
View 9 PicturesI kept this specimen after photographing it and it molted into a spinner in perfect condition, which I photographed here.Region: Northeast
Collected Apr 30, 2007
Added May 3, 2007
Male Epeorus pleuralis (Quill Gordon) Mayfly Spinner
View 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.
View 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
See 2 more specimens...
Mayfly Species Epeorus longimanus
These are very rarely called Red Quill Spinners.
Mayfly Species Cinygmula ramaleyi
These are very rarely called Red Quill Spinners.
This can be the first mayfly of the season on high mountain streams. It is the most important species of Cinygmula.
Mayfly Species Rhithrogena undulata
These are very rarely called Red Quill Spinners.
This is one of the two most common species of Rhithrogena.

