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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Salmonflies
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Middle Fork Snoqualmie From the Middle Fork Snoqualmie River in Washington

Stream photos

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Hydropsyche (Spotted Sedge) Caddisfly LarvaHydropsyche (Spotted Sedge) Caddisfly Larva
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.
9 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 28, 2004

Photos by Troutnut

Spring rains have this steelhead river up and roaring.
Spring rain has this steelhead river up and roaring.
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Updates from March 27, 2004

Photos by Troutnut

This is my dad's first brown trout on the fly, an 11 incher.
My dad plays the first brown trout he's ever caught on a fly.
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Updates from March 23, 2004

Underwater photos by Troutnut

The white blotches on this rock are Leucotrichia caddisfly cases, and the wispy tubes are cases made by a type of midge.
This Ephemerella subvaria (Hendrickson) nymph picture is one of my favorites.
A careful look at this picture reveals at least three water boatmen swimming around.
A big crayfish lurks under a log.
This log houses several Ephemerella mayfly nymphs and, on the top right, an Epeorus mayfly nymph.
There are several species of caddisfly larvae and Ephemerella nymphs on this rock.
A water boatman flees the camera.
Two Ephemerella mayfly nymphs share a piece of wood with two Taeniopterygidae stonefly nymphs.
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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 crayfish lurks under a log which is home to several mayfly nymphs and caddisfly 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.
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.
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Updates from March 18, 2004

Photos by Troutnut from Eighteenmile Creek in Wisconsin

This pretty little early season brown trout saved me from getting skunked.

Underwater photos by Troutnut from Eighteenmile Creek in Wisconsin

This is my favorite underwater picture so far. It shows a bunch of Simuliidae (black fly) larvae clinging to a rock and swinging in the fast current. There are also at least four visible mayfly nymphs, probably in the family Baetidae. From Eighteenmile Creek in Wisconsin
There are several mayfly and stonefly nymphs clinging to this log. From Eighteenmile Creek in Wisconsin
Several Baetid mayfly nymphs cling to this rock. There are also some clumps of small stones which hold strong caddisfly larvae. From Eighteenmile Creek in Wisconsin
Eighteenmile Creek in Wisconsin
A small stonefly nymph crawls around some gravel. From Eighteenmile Creek in Wisconsin
Light reflected from air bubbles left ghostly wisps in this fairly long exposure picture beneath a riffle. It's got an accidental artistic look. From Eighteenmile Creek in Wisconsin
A peculiar mayfly nymph clings to a log. I'm not sure if it's a Heptageniid clinger or a flat-bodied Ephemerellid crawler, but I don't believe it's a species I've collected yet. From Eighteenmile Creek in Wisconsin
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