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.

Stream photos

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Hydropsyche (Spotted Sedge) Caddisfly Larva Hydropsyche (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.

9 Recently Added Photos

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.

Stonefly Genus Pictetiella

Genus Range

source

Specimens of the Stonefly Genus Pictetiella

1 Female Adult

Female Pictetiella expansa (Autumn Springfly) Stonefly Adult

12 Pictures

Lateral view of a Female Pictetiella expansa (Perlodidae) (Autumn Springfly) Stonefly Adult from the South Fork Snoqualmie River in Washington

Based on photos, this specimen seems to key out (using Merritt & Cummins 4th Edition) to Pictetiella expansa, but some of the characteristics aren't 100 % clear. Frisonia picticeps is another possibility. The range map doesn't show Pictetiella expansa in Washington, but that species is listed elsewhere as occurring near Puget Sound, and the head markings are similar to (albeit not a perfect match for) those of a male from Colorado in the scientific literature.

Collected June 15, 2018 from the South Fork Snoqualmie River in Washington

Added by Troutnut on July 3, 2018

Collected June 15, 2018 from the South Fork Snoqualmie River in Washington and added by Troutnut on July 3, 2018