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Lateral view of a Female Hexagenia limbata (Ephemeridae) (Hex) Mayfly Dun from the Namekagon River in Wisconsin
Hex Mayflies
Hexagenia limbata

The famous nocturnal Hex hatch of the Midwest (and a few other lucky locations) stirs to the surface mythically large brown trout that only touch streamers for the rest of the year.

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.
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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Male Pteronarcys californica (Giant Salmonfly) Stonefly Adult Pictures

This shows the adult and its exuviae.

This stonefly was collected from the Jocko River in Montana on May 1st, 2007 and added to Troutnut.com by Bnewell on June 26th, 2011.


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Male Pteronarcys californica (Giant Salmonfly) Stonefly Adult Pictures

Collection details
Location: Jocko River, Montana
Date: May 1st, 2007
Added to site: June 26th, 2011
Author: Bnewell
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