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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.

Cedar sweepers line the fertile spring creek headwaters of a famous trout stream. From the Bois Brule River in Wisconsin

Stream photos

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Hydropsyche (Spotted Sedge) Caddisfly LarvaHydropsyche (Spotted Sedge) Caddisfly Larva
Ventral view of a Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Larva from the Yakima River in Washington
With a bit of help from the microscope, this specimen keys clearly and unsurprisingly to Hydropsyche.
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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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  3. Salmonfly nymph anatomy

Pteronarcys dorsata (Salmonfly) Stonefly Nymph
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Dorsal view of a Pteronarcys dorsata (Pteronarcyidae) (Salmonfly) Stonefly Nymph from the Namekagon River in Wisconsin
Added by Troutnut on January 25, 2006
Collected February 6, 2004 from the Namekagon River in Wisconsin and added by Troutnut on January 25, 2006
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Adirman
Adirman's profile picture
Monticello, NY

Posts: 479
Adirman on Sep 10, 2010September 10th, 2010, 11:06 pm EDT
Hey, what'sm with those wierd fuzzy looking things under its belly and forearms? Is that some sort of traction thing for sticking to stuff?
Dryfly
rochester mn

Posts: 133
Dryfly on Sep 11, 2010September 11th, 2010, 4:17 pm EDT
They're gills.

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