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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.

Ventral view of a Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Larva from the Yakima River in Washington
With a bit of help from the microscope, this specimen keys clearly and unsurprisingly to Hydropsyche.
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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Summer Flier Sedges

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

Caddisfly Genus Limnephilus

These are often called Summer Flier Sedges.
This prolific genus is most important in lakes, spring ponds, and beaver ponds, but some of its species do well enough in spring creeks and slow pools to be important to trout there.
Female Limnephilus frijole (Limnephilidae) (Summer Flier Sedge) Caddisfly Adult from the Touchet River in Washington
Limnephilus (Limnephilidae) (Summer Flier Sedge) Caddisfly Larva from unknown in Wisconsin

Summer Flier Sedges

Scientific Name
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