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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.

Silver Creek in Idaho

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Doroneuria baumanni (Golden Stone) Stonefly Nymph Doroneuria baumanni (Golden Stone) Stonefly Nymph

Dorsal view of a Doroneuria baumanni (Perlidae) (Golden Stone) Stonefly Nymph from Sears Creek in Washington

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.

Freshwater Invertebrate Underwater Pictures, Page 5

Freshwater Invertebrate Underwater Pictures, Page 5

Underwater photos of freshwater invertebrates in their natural habitat.

A crayfish munches on an unidentified white thing.

A careful look at this picture reveals at least three water boatmen swimming around.

The mayfly and stonefly nymphs in this picture blend in extremely well.

Spring Creek in Wisconsin

These big bucket-like nets on the weeds are home to Hydropsychid caddisflies, as I verified by actually taking one apart to look at its inhabitant.

From Mystery Creek # 42 in Pennsylvania

These are probably 3rd instar larvae of Dicosmoecus gilvipes. The 4th instar larvae will be the round case made of sand grains.

From the Touchet River in Washington

A couple tiny aquatic mites are clinging to this rock.

From Mystery Creek # 90 in Wisconsin

The top of this stump is covered with mayfly and caddisfly life.

Hemlock Creek in New York

The strange tubes all over this rock house tiny midge larvae.

This log houses several Ephemerella mayfly nymphs and, on the top right, an Epeorus mayfly nymph.

Mystery Creek # 90 in Wisconsin

I spotted this very large leech freely tumbling, and occasionally stopping, along the bottom of a clear, cool trout stream. I paid careful attention later and spotted two more like it, but this one was the largest -- probably over 7 inches stretched out.

There is one other picture of it.

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

Spring Creek in Wisconsin

Eighteenmile Creek in Wisconsin

A small stonefly nymph crawls around some gravel.

From Eighteenmile Creek in Wisconsin

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