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.

The Gibbon River in Wyoming

Stream photos

Featured on the forum
Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)
Re: Trico Tips
In the Mayfly Genus Tricorythodes by Martinlf
Re: UV spectrum and trout
In General Discussion by Martinlf
Re: closing the gender gap in flyfishing
In General Discussion by Konchu (Smallflyguy replied)
Re: Fishing Kupa River, Slovenia
In Fishing Reports by Slocum (Fish1 replied)
Limnephilus (Summer Flier Sedge) Caddisfly LarvaLimnephilus (Summer Flier Sedge) Caddisfly Larva
Case view of a Limnephilus (Limnephilidae) (Summer Flier Sedge) Caddisfly Larva from the Yakima River in Washington
This seems to be a young larva of Limnephilus. Although not clear in the picture, several ventral abdominal segments have chloride epithelia.
7 Recently Added Photos
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.

Updates from March 19, 2004

Updates from March 19, 2004

Photos by Troutnut

Several whitetail deer cross the river in front of me in the middle of winter.

Underwater photos by Troutnut

There's a large Ephemerella subvaria nymph in the top left.
Some large Ephemerella mayfly nymphs cling to a log. In the background, hundreds of Simuliidae black fly larvae swing in large clusters in the current.
Three big Ephemerella subvaria mayfly nymphs share a rock with some cased caddis larvae.
There's a stonefly nymph in the bottom right corner of this picture, but what's really interesting is those white blotches. They're pretty common in my Wisconsin home river river, stuck flat onto the rocks--lots of rocks have a speckled look as a result. They are microcaddis cases, made by larvae of the caddisfly family Hydroptilidae. These are made by larvae of the subfamily Leucotrichiinae, most likely the genus Leucotrichia. They spin little flat oval cases of silk tight and immobile against the rocks.
The mayfly and stonefly nymphs in this picture blend in extremely well.
The strange tubes all over this rock house tiny midge larvae.
A large Ephemerella subvaria nymphs clings to a log along with a couple smaller mayfly nymphs.
A couple Sulphur (Ephemerella invaria) nymphs cling to a log.
A large crayfish lurks under a log which is home to several mayfly nymphs and caddisfly larvae.
An Ephemerella subvaria nymph clings to a white rock in the foreground, and there are other nymphs in the background.
The top of this stump is covered with mayfly and caddisfly life.
This picture shows some of the intricate homes woven by net-spinning caddis larvae.

Quick Reply

Related Discussions

Topic
Replies
Last Reply
Re: And now for something... completely different.
In Site Updates by Bnewell
3
Mar 30, 2012
by Entoman
Re: One of several new specimens today
In Psilotreta labida Caddisfly Larva by Troutnut
3
Feb 12, 2009
by Creno
Some neat new bugs today
In General Discussion by Troutnut
0
Aug 23, 2006
by Troutnut
Re: Lots of new pictures to check out, coming online tonight/tomorrow
In General Discussion by Troutnut
1
Oct 4, 2006
by Dinerobyn
Re: Off to Alaska!
In General Discussion by Troutnut
9
Jun 28, 2007
by Troutnut
Re: hook size (and chocolate duns, and old-timey mayfly family classifications)
In Eurylophella Mayfly Nymph by Warren
10
Apr 13, 2007
by Quillgordon
Re: Mayfly Central Update
In General Discussion by Konchu
5
Jul 11, 2013
by Adirman
Re: Tup's Indispensible Featured Topic
In Fly Tying by Softhackle
34
Oct 1, 2011
by WestCO
Re: Invaria nymph
In Ephemerella invaria Mayfly Nymph by Martinlf
18
Nov 30, 2009
by Oldredbarn
Re: Brook trout
In General Discussion by TNEAL
12
Jul 31, 2016
by Jmd123
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy