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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.

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 June 6, 2021

Closeup insects by Troutnut from the Teal River in Wisconsin

Male Nemotaulius hostilis (Limnephilidae) (Northern Caddisfly) Caddisfly Adult from the Teal River in Wisconsin
Lateral view of a Male Acerpenna pygmaea (Baetidae) (Tiny Blue-Winged Olive) Mayfly Spinner from the Teal River in Wisconsin
Artistic view of a Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin

Quick bug collecting and gear test trip

By Troutnut on April 11th, 2021
I was out in the Issaquah Alps doing some puppy training yesterday and decided to bring my bug-collecting stuff along. Mostly it was an excuse to get more practice with my new microscope and test out a new system for holding bugs I've sorted to photograph.

Previously, I've had some sensitive specimens quickly die after being sorted into their own separate containers or compartments, either because the water warms up more quickly in the compartments or the oxygen runs out. This leads to specimens that aren't in ideal shape for photos. To solve the problem, I drilled holes in an ice cube tray and gorilla glued some little squares of 250-micron Nitex mesh (drift sampling net material) to the outside. Then I stick the whole thing in a tub of aerated water with a freezer block. This allows me to separate different types of bugs into lots of compartments, while still having them aerated and cooled from a common, larger reservoir of water.



It worked great. Some typically fragile Baetids and Heptageniids stayed in good shape for a very long time, more than long enough to take photos. I didn't photograph any of the Heptageniids, though, because they were Cinygmula and Rhithrogena nymphs for which there are no species keys available.

My favorite new addition was Claassenia sabulosa, a very pretty golden stonefly nymph.



There were also a lot of Hesperoperla pacifica nymphs in the sample, but I already have good photos of those.

Closeup insects by Troutnut from Holder Creek in Washington

First trout of 2021!

By Troutnut on April 8th, 2021
Friday I drove from the Seattle area out to Yakima, Washington, where a FEMA-run Covid vaccination clinic has so many extra doses and appointments that they're eagerly offering them to people who aren't yet officially eligible. (Washington is one of the last states to open the vaccine to everybody.) I'm looking forward to being able to safely travel on airplanes again and have at least a couple exciting fishing trips planned for this summer.

For now, I just wanted to catch the first fish of the year on my drive home via the Yakima Canyon.

The Yakima River in Washington


Action on the Yakima was slow, and I'm consistently frustrated there by the difficult access to good spots from the road-side bank. But I did see one single rise, then caught the fish on a nymph.

My first trout of 2021! Not a big one, but a start.
My first trout of 2021! Not a big one, but a start.


It's a start!

I also collected quite a few nymphs as an excuse to have some fun with the new microscope I got last fall. The highlight was probably finding a specimen of Heptagenia pulla, which isn't known from Washington or neighboring states.

Photos by Troutnut from the Yakima River in Washington

The Yakima River in Washington
My 7-month-old fishing buddy.

From the Yakima River in Washington
These bighorn ewes were watching over the Yakima as I fished.

From the Yakima River in Washington
My first trout of 2021! Not a big one, but a start.

Closeup insects by Troutnut from the Yakima River in Washington

Briefly exploring steelhead streams

By Troutnut on January 22nd, 2021
I've lived in Washington for three years and not yet caught a steelhead, or even really tried, in the famed rivers of the Olympic Peninsula. My wife and I had a brief window to get away for about a day and a half and did some exploring over there this week. However, with the short days, beach time, and rambunctious new puppy, I didn't get much serious fishing done. I fished some promising water on the Hoh for about an hour, seeing no fish but talking to others who had, and I spent all of about ten minutes swinging a fly through a run on the Sol Duc. I'd love to get back there for a few days of serious fishing when time allows.

Photos by Troutnut from the Hoh River and the Sol Duc River in Washington

The Hoh River in Washington
Sol Duc River

From the Sol Duc River in Washington
Hoh River

From the Hoh River in Washington
Hoh River

From the Hoh River in Washington

References

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