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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 Pycnopsyche guttifera (Limnephilidae) (Great Autumn Brown Sedge) Caddisfly Larva from the Yakima River in Washington
This specimen appears to be of the same species as this one collected in the same spot two months earlier. The identification of both is tentative. This one suffered some physical damage before being photographed, too, so the colors aren't totally natural. I was mostly photographing it to test out some new camera setting idea, which worked really well for a couple of closeups.
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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Stonefly Genus Claassenia (Golden Stones)

The western genus Claassenia currently has only one species. See the species hatch page for details.
Genus Range

Identification

To determine whether a specimen of Perlidae belongs to Claassenia, use the Key to Genera of Perlidae Nymphs.

Specimens of the Stonefly Genus Claassenia

1 Male Adult
1 Female Adult
4 Nymphs

Start a Discussion of Claassenia

Stonefly Genus Claassenia (Golden Stones)

Taxonomy
Species in Claassenia: Claassenia sabulosa
Genus Range
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