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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.

Firehole River Sunset From the Firehole River in Wyoming

Stream photos

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Psychodidae True Fly LarvaPsychodidae True Fly Larva
Lateral view of a Psychodidae True Fly Larva from Mystery Creek #308 in Washington
This wild-looking little thing completely puzzled me. At first I was thinking beetle or month larva, until I got a look at the pictures on the computer screen. I made a couple of incorrect guesses before entomologist Greg Courtney pointed me in the right direction with Psychodidae. He suggested a possible genus of Thornburghiella, but could not rule out some other members of the tribe Pericomini.
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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.

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Photos by Troutnut from Spring Creek in Wisconsin

Spring Creek in Wisconsin
Spring Creek in Wisconsin
Spring Creek in Wisconsin

Closeup insects by Troutnut from Devil's Creek, the Teal River, and Spring Creek in Wisconsin

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Female Chauliodes rastricornis (Fishfly) Hellgrammite Adult
Lateral view of a Female Chauliodes rastricornis (Corydalidae) (Fishfly) Hellgrammite Adult from Devil's Creek in Wisconsin
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Female Isonychia (Slate Drake) Mayfly Spinner
Artistic view of a Female Isonychia (Isonychiidae) (Slate Drake) Mayfly Spinner from the Teal River in Wisconsin
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Dibusa angata (Microcaddis) Caddisfly Adult
Lateral view of a Dibusa angata (Hydroptilidae) (Microcaddis) Caddisfly Adult from Spring Creek in Wisconsin
I'm tentatively classifying this one as Dibusa angata because I cannot see any ocelli in my dorsal view of the head (and because it has a single spur on each front tibia). However, sometimes they can be difficult to spot when obscured behind setae in general, so I'm not 100 % sure on this one. If there are ocelli I missed, then based on ranges and colors the genus ought to be Stactobiella.
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Female Clioperla clio (Clio Stripetail) Stonefly Adult
Lateral view of a Female Clioperla clio (Perlodidae) (Clio Stripetail) Stonefly Adult from Devil's Creek in Wisconsin
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Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner
Lateral view of a Female Heptageniidae (March Browns, Cahills, Quill Gordons) Mayfly Spinner from Devil's Creek in Wisconsin
I only caught a couple of these, and they were both females, so I'm not sure I'll be able to identify it any further.
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Male Stenonema modestum (Cream Cahill) Mayfly Spinner
Male Stenonema modestum (Heptageniidae) (Cream Cahill) Mayfly Spinner from the Teal River in Wisconsin
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Female Siphlonurus (Gray Drake) Mayfly Spinner
Lateral view of a Female Siphlonurus (Siphlonuridae) (Gray Drake) Mayfly Spinner from Devil's Creek in Wisconsin
Egg-laying females of this species were the most noticeable insect over the water at dusk on this small trout stream in Wisconsin's Blue Hills. I caught several of them along with one male netted in mid-air mated to one of the females.
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Male Siphlonurus (Gray Drake) Mayfly Spinner
Lateral view of a Male Siphlonurus (Siphlonuridae) (Gray Drake) Mayfly Spinner from Devil's Creek in Wisconsin
Egg-laying females of this species were the most noticeable insect over the water at dusk on this small trout stream in Wisconsin's Blue Hills. I caught several of them and photographed one, but this was the only male, netted in mid-air mated to one of the females.

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