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.

Mount Deborah and Hess Mountains. Two of the greatest peaks of the Alaska Range rise behind the braided, glacial Susitna River. These massive mountains are 35 miles north of where I took this picture.

From the Susitna River in Alaska

Stream photos

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Limnephilus (Summer Flier Sedge) Caddisfly Larva Limnephilus (Summer Flier Sedge) Caddisfly Larva

Case view of a Limnephilus (Limnephilidae) (Summer Flier Sedge) Caddisfly Larva from the Yakima River in Washington

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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.

Caddisfly Species Glossosoma alascense (Saddle-case Makers)

Where & when

Time of year : July

This is one of the most important western species of Glossosoma.

In 42 records from GBIF, adults of this species have mostly been collected during June (29%), August (21%), July (19%), April (19%), and May (7%).

In 9 records from GBIF, this species has been collected at elevations ranging from 3524 to 9239 ft, with an average (median) of 5873 ft.

Species Range

source

Map of specific collection sites

Specimens of the Caddisfly Species Glossosoma alascense

1 Male Adult

Male Glossosoma alascense (Saddle-case Maker) Caddisfly Adult

8 Pictures

Lateral view of a Male Glossosoma alascense (Glossosomatidae) (Saddle-case Maker) Caddisfly Adult from Rock Creek in Montana

I lost track of this specimen before I could get it under my microscope, but caddis expert Dave Ruiter was able to identify it from pictures as Glossosoma, with an uncertain suggestion of G. alascense as the most likely species.

Collected July 8, 2019 from Rock Creek in Montana

Added by Troutnut on July 18, 2019

Collected July 8, 2019 from Rock Creek in Montana and added by Troutnut on July 18, 2019