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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.

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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Suwallia pallidula (Little Yellow Stonefly) Stonefly Adult Pictures

A large number of photos from the microscope allowed a fairly confident ID on this one, which not coincidentally matches very well a previous specimen of Suwallia pallidula that I collected in Washington.

Lateral view of a Suwallia pallidula (Chloroperlidae) (Sallfly) Stonefly Adult from Mystery Creek #237 in Montana
Suwallia pallidula (Chloroperlidae) (Sallfly) Stonefly Adult from Mystery Creek #237 in Montana
Suwallia pallidula (Chloroperlidae) (Sallfly) Stonefly Adult from Mystery Creek #237 in Montana
Ventral view of a Suwallia pallidula (Chloroperlidae) (Sallfly) Stonefly Adult from Mystery Creek #237 in Montana
Ruler view of a Suwallia pallidula (Chloroperlidae) (Sallfly) Stonefly Adult from Mystery Creek #237 in Montana The smallest ruler marks are 1 mm.
Cerci closeup.

Suwallia pallidula (Chloroperlidae) (Sallfly) Stonefly Adult from Mystery Creek #237 in Montana
Dorsal view of the preserved specimen with wings removed.

Suwallia pallidula (Chloroperlidae) (Sallfly) Stonefly Adult from Mystery Creek #237 in Montana
Fore wing.

Suwallia pallidula (Chloroperlidae) (Sallfly) Stonefly Adult from Mystery Creek #237 in Montana
Hind wing. Note the folded anal area, which is key to identifying this species, actually folded around underneath the rest of the wing in this view (you can see the setae sticking off it).

Suwallia pallidula (Chloroperlidae) (Sallfly) Stonefly Adult from Mystery Creek #237 in Montana
Suwallia pallidula (Chloroperlidae) (Sallfly) Stonefly Adult from Mystery Creek #237 in Montana
Ventral view of terminal abdominal segments.

Suwallia pallidula (Chloroperlidae) (Sallfly) Stonefly Adult from Mystery Creek #237 in Montana
Dorsal view of terminal abdominal segments.

Suwallia pallidula (Chloroperlidae) (Sallfly) Stonefly Adult from Mystery Creek #237 in Montana

This stonefly was collected from Mystery Creek #237 in Montana on August 1st, 2020 and added to Troutnut.com by Troutnut on August 18th, 2020.


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Suwallia pallidula (Little Yellow Stonefly) Stonefly Adult Pictures

Collection details
Location: Mystery Creek #237, Montana
Date: August 1st, 2020
Added to site: August 18th, 2020
Author: Troutnut
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