Header image
Enter a name
Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington
This species was fairly abundant in a February sample of the upper Yakima.
27" brown trout, my largest ever. It was the sub-dominant fish in its pool. After this, I hooked the bigger one, but I couldn't land it.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Fenton, MI.

Posts: 28
Brian314 on Nov 11, 2018November 11th, 2018, 8:58 am EST
One of the early hatches in MI is the Slate Wing Mahogany. The dry fly versions of this are, confusingly, called Mahogany Dun and Blue Quill - Two completely different colors. (1) Does anyone know why ? (2) Does anyone know the fly patternrecipename for this fly in Mi - I want to tie it ?
Thanks !! Brian314
Roguerat's profile picture
Posts: 456
Roguerat on Nov 11, 2018November 11th, 2018, 11:27 pm EST

Welcome to another Michigander on the forum! You're up there in NW Kent Co, apparently...and a short trip to the Rogue or Muskegon.

Blue Quill refers to wing color (a dark grey/dun) and Little Mahogany (reddish, dark brown) refers to body coloration. Both are local names for Paraleptophebia spp. and a good earlier hatch for your local waters...Google these names and a bunch of patterns will turn up, and past experience shows sz 16 nymph and dry flies work best for me.

The Slate Wing Mahogany is another fly altogether- Isonychia spp. (sz's 10-12 with some smaller exceptions later in the season) which should appear in late June through August dependent on temps and other variables. This is a heavy and fairly dependable hatch on the Muskegon.

(asking forgiveness if you already know the above info, I'm often too willing to share stuff).

See you on the stream next spring...I'll be the whiskered old fart flogging the water with a trout spey-rod,

tight lines!


'Less is more...'

Ludwig Mies Vande Rohe

Roguerat's profile picture
Posts: 456
Roguerat on Nov 12, 2018November 12th, 2018, 5:37 am EST
My mistake in noting the Slate Wing Mahogany as an Iso, it IS another name for Paraleptophlebia spp.(thanks to the insect ID section of this forum and Dr Jason)

Isonychia spp. are known as a Slate Drakes or Mahogany Drakes, per Ann Miller's excellent 'Hatch Guide for Upper Midwest Streams', another valuable resource for tyers and fly-fishers alike.


"Less is more...'

Ludwig Mies Vande Rohe

Fenton, MI.

Posts: 28
Brian314 on Nov 23, 2018November 23rd, 2018, 9:23 pm EST
Thanks so much for taking the time clearing that up for me Roguerat !
RE Ann Miller's book - it is on my xmas list - if I don't get it at xmas, I'll just order it and give MYSELF a present...LOL !!!! Brian314

Quick Reply

Related Discussions

Last Reply
Nov 12, 2011
by Sayfu
Jul 31, 2007
by LittleJ
Apr 19, 2013
by Sayfu
May 28, 2009
Troutnut.com is copyright © 2004-2023 (email Jason). privacy policy