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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 Setvena wahkeena (Perlodidae) (Wahkeena Springfly) Stonefly Nymph from Mystery Creek #199 in Washington
As far as I can tell, this species has only previously been reported from one site in Oregon along the Columbia gorge. However, the key characteristics are fairly unmistakable in all except for one minor detail:
— 4 small yellow spots on frons visible in photos
— Narrow occipital spinule row curves forward (but doesn’t quite meet on stem of ecdysial suture, as it's supposed to in this species)
— Short spinules on anterior margin of front legs
— Short rposterior row of blunt spinules on abdominal tergae, rather than elongated spinules dorsally
I caught several of these mature nymphs in the fishless, tiny headwaters of a creek high in the Wenatchee Mountains.
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.
Troutnut is a project started in 2003 by salmonid ecologist Jason "Troutnut" Neuswanger to help anglers and fly tyers unabashedly embrace the entomological side of the sport. Learn more about Troutnut or support the project for an enhanced experience here.

Landscape & scenery photos from Mystery Creek # 23

The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
I took some neat underwater pictures of salamander larvae in this pool a few weeks earlier.

From the Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
I try to find a brookie in a beautiful, clear pool, but with no luck.

From the Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
Lena sneaks up on some alleged brook trout which gave no sign of their presence to either one of us.

From the Mystery Creek # 23 in New York
I've caught several brookies in this hole, although on the day of this photograph I found none.

From the Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
I caught a nice brookie a few weeks earlier in this pool at the junction of a split channel in the stream.  The huge fallen tree is great cover.

From the Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
The Mystery Creek # 23 in New York
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