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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.

Mystery Creek # 237 in Montana

Stream photos

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Dorsal view of a Limnephilidae (Giant Sedges) Caddisfly Larva from the Yakima River in Washington
This specimen resembled several others of around the same size and perhaps the same species, which were pretty common in my February sample from the upper Yakima. Unfortunately, I misplaced the specimen before I could get it under a microscope for a definitive ID.
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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.
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  3. Canoe float down the Brule with my mom

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  3. Canoe float down the Brule with my mom

By Troutnut on June 8th, 2005
This was a great trip down the classic trout water of the Brule, fishing and collecting bugs along the way. In one of the lakes, we got to watch the cutest little bear cub brutally maul the cutest little whitetail fawn—a salient reminder that nature doesn't particularly care about cuteness.

Photos by Troutnut from the Bois Brule River and in Wisconsin and

Here I'm looking through the sampling net for interesting nymphs, some of which ended up on this site. From the Bois Brule River in Wisconsin
Cedar sweepers line the fertile spring creek headwaters of a famous trout stream. From the Bois Brule River in Wisconsin
Here I'm tying on a fly in the middle of a warm summer day. Despite the conditions, the trout responded well. From the Bois Brule River in Wisconsin
Gnarled cedars twist out over a nice trout stream. From the Bois Brule River in Wisconsin
This tail end of a large glassy flat holds many nice rising trout most summer evenings, and it's extremely demanding of both stealth and fine casting. From the Bois Brule River in Wisconsin
The Bois Brule River in Wisconsin
Lone tree on a rock in the middle of Big Lake. Fittingly, Big Lake is the largest of several short wide spots in the upper Brule River. From the Bois Brule River in Wisconsin
A Canada goose and gosling poke their heads out of the grass along a trout stream.
A canada goose looks over some large, downy goslings.

Closeup insects by Troutnut from the Bois Brule River in Wisconsin

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Male Baetidae (Blue-Winged Olive) Mayfly Nymph
Dorsal view of a Male Baetidae (Blue-Winged Olive) Mayfly Nymph from the Bois Brule River in Wisconsin
This male nymph is probably in its final instar. The wing pads are extremely black and the large turbinate eyes are very apparent inside the nymph's head.
6
Teloganopsis deficiens (Little Black Quill) Mayfly Nymph
Dorsal view of a Teloganopsis deficiens (Ephemerellidae) (Little Black Quill) Mayfly Nymph from the Bois Brule River in Wisconsin
This nymph has tiny, barely detectable tubercles on its abdominal segments, and I could not find the maxillary palpi. I tentatively guessed that it is Serratella deficiens back when that was a thing; the species is now known as Teloganopsis deficiens. One of the key characteristics, tarsal claws with a subapical denticle being larger than the preceding denticles, seems to be visible in some of the pictures.
6
Ephemerella needhami (Little Dark Hendrickson) Mayfly Nymph
Dorsal view of a Ephemerella needhami (Ephemerellidae) (Little Dark Hendrickson) Mayfly Nymph from the Bois Brule River in Wisconsin
I photographed three strange striped Ephemerella nymphs from the same trip on the same river: this one, a brown one, and a very very striped one. I have tentatively put them all in Ephemerella needhami for now.
3
Stenonema vicarium (March Brown) Mayfly Nymph
Dorsal view of a Stenonema vicarium (Heptageniidae) (March Brown) Mayfly Nymph from the Bois Brule River in Wisconsin
I keyed this nymph to Stenonema fuscom, which is now synonymized with Maccaffertium vicarium. However, the size, markings, and time of year make me very skeptical of this identification.
5
Ephemerella excrucians (Pale Morning Dun) Mayfly Nymph
Dorsal view of a Ephemerella excrucians (Ephemerellidae) (Pale Morning Dun) Mayfly Nymph from the Bois Brule River in Wisconsin
I spent a while with a microscope to fairly positively identify this specimen as Ephemerella excrucians.
4
Leucrocuta hebe (Little Yellow Quill) Mayfly Nymph
Dorsal view of a Leucrocuta hebe (Heptageniidae) (Little Yellow Quill) Mayfly Nymph from the Bois Brule River in Wisconsin
3
Ephemerella needhami (Little Dark Hendrickson) Mayfly Nymph
Dorsal view of a Ephemerella needhami (Ephemerellidae) (Little Dark Hendrickson) Mayfly Nymph from the Bois Brule River in Wisconsin
I photographed three strange striped Ephemerella nymphs from the same trip on the same river: a black and olive one, a brown one, and this one. I have tentatively put them all in Ephemerella needhami for now.
2
Ephemerella needhami (Little Dark Hendrickson) Mayfly Nymph
Dorsal view of a Ephemerella needhami (Ephemerellidae) (Little Dark Hendrickson) Mayfly Nymph from the Bois Brule River in Wisconsin
I photographed three strange striped Ephemerella nymphs from the same trip on the same river: a black and olive one, this one, and a very very striped one. I have tentatively put them all in Ephemerella needhami for now.

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