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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 Mesocapnia (Little Snowflies)

Genus Range

Start a Discussion of Mesocapnia

Stonefly Genus Mesocapnia (Little Snowflies)

Taxonomy
Species in Mesocapnia: Mesocapnia variabilis
14 species (Mesocapnia arizonensis, Mesocapnia autumna, Mesocapnia bakeri, Mesocapnia bergi, Mesocapnia bulbosa, Mesocapnia frisoni, Mesocapnia lapwae, Mesocapnia oenone, Mesocapnia ogotoruka, Mesocapnia porrecta, Mesocapnia projecta, Mesocapnia sugluka, Mesocapnia werneri, and Mesocapnia yoloensis) aren't included.
Genus Range
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