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.

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

This seems to be a young larva of Limnephilus. Although not clear in the picture, several ventral abdominal segments have chloride epithelia.

7 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.

Up-to-date with the latest mayfly species

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Oct 24, 2006October 24th, 2006, 5:53 pm EDT

I just updated the database to reflect the latest mayfly species changes, thanks to the list Roger aka Taxon kindly put together and posted on various forums. So everything should be shiny and up-to-date. :)

Only two of the affected species, Apobaetis futilis and Epeorus rubidus (which is now a synonym of Epeorus vitreus), have been discussed in the fly fishing literature I've read.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist