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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 Skwala (Perlodidae) (Large Springfly) Stonefly Nymph from the Yakima River in Washington
This Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.
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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Caddisfly Species Pycnopsyche scabripennis (Great Autumn Brown Sedges)

Where & when

This species is relevant in parts of the Catskills.

In 32 records from GBIF, adults of this species have been collected during August (50%), September (19%), July (19%), and October (13%).

In 10 records from GBIF, this species has been collected at elevations ranging from 285 to 12631 ft, with an average (median) of 1319 ft.

Species Range

Start a Discussion of Pycnopsyche scabripennis

References

Caddisfly Species Pycnopsyche scabripennis (Great Autumn Brown Sedges)

Taxonomy
Species Range
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