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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Onocosmoecus (Great Late-Summer Sedge) Caddisfly Larva Onocosmoecus (Great Late-Summer Sedge) Caddisfly Larva

Lateral view of a Onocosmoecus (Limnephilidae) (Great Late-Summer Sedge) Caddisfly Larva from the Yakima River in Washington

This specimen keys pretty easily to Onocosmoecus, and it closely resembles a specimen from Alaska which caddis expert Dave Ruiter recognized as this genus. As with that specimen, the only species in the genus documented in this area is Onocosmoecus unicolor, but Dave suggested for that specimen that there might be multiple not-yet-distinguished species under the unicolor umbrella and it would be best to stick with the genus-level ID. I'm doing the same for this one.

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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.

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.

Hydropsyche species

Male Hydropsyche (Spotted Sedge) Caddisfly Adult

5 Pictures

Lateral view of a Male Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Adult from the Henry's Fork of the Snake River in Idaho

This was identified by Dave Ruiter as Hydropsyche californica or Hydropsyche occidentalis, but the characteristics were not clear enough to tell them apart.

Collected August 10, 2018 from the Henry's Fork of the Snake River in Idaho

Added by Troutnut on June 12, 2019

Collected August 10, 2018 from the Henry's Fork of the Snake River in Idaho and added by Troutnut on June 12, 2019

Creno
Grants Pass, OR

Posts: 302

Creno on Jun 14, 2019June 14th, 2019, 10:27 am EDT

cannot be sure - californica or occidentalis

Partsman

bancroft michigan

Posts: 321

Partsman on Jun 14, 2019June 14th, 2019, 12:08 pm EDT

Creno,, thanks for the wonderful pics of the caddis. This is another piece of the puzzle to figure out! I was into caddis on the south branch of the ausable a few weeks ago and did pretty good, although Im still not certain of the variety I was fishing. But a size 14 tan x2 was very helpful!

Creno
Grants Pass, OR

Posts: 302

Creno on Jun 14, 2019June 14th, 2019, 2:24 pm EDT

These were all Jason's pics - I just tried to put names on them