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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.

Ventral view of a Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Larva from the Yakima River in Washington
With a bit of help from the microscope, this specimen keys clearly and unsurprisingly to Hydropsyche.
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.

Gomphidae Dragonfly Nymph Pictures

Video Clip

Dragonfly Nymph Scooting Around

Dragonfly nymphs propel themselves through the water with a miniature jet engine, taking water in below their mouths and shooting it out their back ends. You can see the ripples from the jet out this one's back in this video.

This dragonfly was collected from the Namekagon River in Wisconsin on January 13th, 2004 and added to Troutnut.com by Troutnut on January 25th, 2006.

Discussions of this Nymph

1 replies
Posted by Waxsmith on Feb 11, 2011
Last reply on Feb 11, 2011 by Taxon
I do know these nymphs are biggies alright, but just what is the average size of them, like their length in "mm"?
Posted by Waxsmith on Feb 11, 2011
Last reply on Feb 11, 2011 by Waxsmith
No answer required to this queery, I found them in Schwiebert's "NYMPHS".
i have qustoins
2 replies
Posted by Davisbugg on Mar 24, 2007
Last reply on Mar 26, 2007 by Martinlf
my daughter and i found one of these in the river. she is very cerious can you tellme what they eat or if it will turn into some other bugplease tell me wat we need to do.

Dragon Flies
Posted by Bob on Jan 26, 2007
Last reply on Jan 26, 2007 by DMM
I am looking for a picture of an adult dragon
Family ID
Posted by DMM on Nov 26, 2006
Last reply on Nov 26, 2006 by DMM

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Gomphidae Dragonfly Nymph Pictures

Collection details
Location: Namekagon River, Wisconsin
Date: January 13th, 2004
Added to site: January 25th, 2006
Author: Troutnut
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