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Slate Maroon Drakes

Scientific Names
MatchScientific Name
**Epeorus
**Ironodes nitidus

Like most common names, "Slate Maroon Drake" can refer to more than one taxon. They're previewed below, along with 4 specimens. For more detail click through to the scientific names.

Mayfly Genus Epeorus

These are sometimes called Slate Maroon Drakes.
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 Ironodes nitidus

These are sometimes called Slate Maroon Drakes.
This large, relatively uncommon Western mayfly may produce short fishable hatches. Ernest Schwiebert remarked in Matching the Hatch about its unique appearance:

This large dark mayfly is one of the most unusually colored insects to hatch on Western streams, for its sternites (
One sternite of this Isonychia bicolor mayfly spinner is highlighted in red.
One sternite of this Isonychia bicolor mayfly spinner is highlighted in red.
Sternite: The bottom (ventral) part of a single segment on an insect's abdomen.
)
are a reddish maroon.
Ironodes nitidus (Slate Maroon Drake) Mayfly AdultIronodes nitidus (Slate Maroon Drake) Mayfly Adult View 3 PicturesWhile relatively rare in most of western Montana, it is common in several small streams along the east side of Flathead Lake and streams on the south side of the Flathead Indian Reservation.
Collected June 25, 2008 from in
Added to Troutnut.com by on June 28, 2011
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