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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.

Lateral view of a Clostoeca disjuncta (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington
This one was surprisingly straightforward to identify. The lack of a sclerite at the base of the lateral hump narrows the field quite a bit, and the other options followed fairly obvious characteristics to Clostoeca, which only has one species, Clostoeca disjuncta.
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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Chilliwack Sallflies

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

Stonefly Species Paraperla wilsoni

These are very rarely called Chilliwack Sallflies.
Paraperla wilsoni (Chloroperlidae) (Sallfly) Stonefly Adult from Flathead Lake in Montana
This is another stonefly that lives its nymphal life in the hyporheic zone, flood plain gravels. In this case, the gravels of a small stream, Roy's Creek, that flows into Flathead Lake at the Univ. of Montana Biological Station.

Chilliwack Sallflies

Scientific Name
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