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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.
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Cascades Stone

This common name refers to only one species. Click its scientific name to learn more.

Stonefly Species Doroneuria baumanni

These are very rarely called Cascades Stone.
Male Doroneuria baumanni (Perlidae) (Golden Stone) Stonefly Adult from the Foss River in Washington
I found this stonefly on some streamside vegetation. I didn't see any in the air in several hours of fishing.
Dorsal view of a Doroneuria baumanni (Perlidae) (Golden Stone) Stonefly Nymph from Swauk Creek in Washington
I'm not aware of any way to tell the two species of Doroneuria apart as nymphs, so this one is classified to species based on location alone. Doroneuria baumanni is found in the Cascades and in Washington, and the other species is not known here yet.

Cascades Stone

Scientific Name
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