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Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York
Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

Dorsal view of a Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington
This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
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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Great Late-Summer Sedges

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

Caddisfly Genus Onocosmoecus

These are often called Great Late-Summer Sedges.
The most common species of this genus is Onocosmoecus unicolor.
Onocosmoecus unicolor (Limnephilidae) (Great Late-Summer Sedge) Caddisfly Adult from the Touchet River in Washington
Case view of a Onocosmoecus unicolor (Limnephilidae) (Great Late-Summer Sedge) Caddisfly Larva from unknown in Wisconsin

References

Great Late-Summer Sedges

Scientific Name
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