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Slate Drakes

Like most common names, "Slate Drake" can refer to more than one taxon. They're previewed below, along with 3 specimens. For more detail click through to the scientific names.

Mayfly Family Isonychiidae

These are often called Slate Drakes.
See Isonychia for details. It is the only North American genus in this family.
Isonychia bicolor (Mahogany Dun) Mayfly NymphIsonychia bicolor (Mahogany Dun) Mayfly Nymph View 5 Pictures
Collected January 13, 2004 from in
Added to Troutnut.com by on January 25, 2006
Female Isonychia bicolor (Mahogany Dun) Mayfly DunFemale Isonychia bicolor (Mahogany Dun) Mayfly Dun View 13 Pictures
Collected June 14, 2005 from in
Added to Troutnut.com by on May 26, 2006
Male Isonychia bicolor (Mahogany Dun) Mayfly SpinnerMale Isonychia bicolor (Mahogany Dun) Mayfly Spinner View 15 PicturesI got several really nice pictures of this spinner. I also collected a female on the same trip.
Collected August 9, 2006 from in
Added to Troutnut.com by on August 11, 2006

Mayfly Species Drunella walkeri

These are very rarely called Slate Drakes.
Ernest Schwiebert had this to say about the hatches of this chunky Eastern Drunella (Blue-Winged Olive) species:

An imitation is rarely required, but notes show that when it is needed it is needed badly.


See the Drunella and Drunella cornuta hatch pages for additional information.
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