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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.

Dorsal view of a Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington
I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.
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 (Sallfly) Stonefly Nymph Pictures

Suwallia (Chloroperlidae) (Sallfly) Stonefly Nymph from the Gulkana River in Alaska
Suwallia (Chloroperlidae) (Sallfly) Stonefly Nymph from the Gulkana River in Alaska
Suwallia (Chloroperlidae) (Sallfly) Stonefly Nymph from the Gulkana River in Alaska
Suwallia (Chloroperlidae) (Sallfly) Stonefly Nymph from the Gulkana River in Alaska
Suwallia (Chloroperlidae) (Sallfly) Stonefly Nymph from the Gulkana River in Alaska
Suwallia (Chloroperlidae) (Sallfly) Stonefly Nymph from the Gulkana River in Alaska
Dorsal view of a Suwallia (Chloroperlidae) (Sallfly) Stonefly Nymph from the Gulkana River in Alaska
Ventral view of a Suwallia (Chloroperlidae) (Sallfly) Stonefly Nymph from the Gulkana River in Alaska
Ruler view of a Suwallia (Chloroperlidae) (Sallfly) Stonefly Nymph from the Gulkana River in Alaska The smallest ruler marks are 1 mm.

This stonefly was collected from the Gulkana River in Alaska on July 17th, 2011 and added to Troutnut.com by Troutnut on July 20th, 2011.


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Suwallia (Sallfly) Stonefly Nymph Pictures

Collection details
Location: Gulkana River, Alaska
Date: July 17th, 2011
Added to site: July 20th, 2011
Author: Troutnut
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