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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Holocentropus Caddisfly Larva Holocentropus Caddisfly Larva

Dorsal view of a Holocentropus (Polycentropodidae) Caddisfly Larva from the Yakima River in Washington

This one seems to tentatively key to Holocentropus, although I can't make out the anal spines in Couplet 7 of the Key to Genera of Polycentropodidae Larvae nor the dark bands in Couplet 4 of the Key to Genera of Polycentropodidae Larvae, making me wonder if I went wrong somewhere in keying it out. I don't see where that could have happened, though. It might also be that it's a very immature larva and doesn't possess all the identifying characteristics in the key yet. If Holocentropus is correct, then Holocentropus flavus and Holocentropus interruptus are the two likely possibilities based on range, but I was not able to find a description of their larvae.

11 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.

Northern Caddis fly Pattern

Troutnabout
Posts: 20

Troutnabout on Dec 17, 2006December 17th, 2006, 9:55 am EST

I tied this pattern to imitate photo of limnephilus

Troutnabout
Posts: 20

Troutnabout on Dec 17, 2006December 17th, 2006, 10:04 am EST

Sorry I can't figure out how to attach photo

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Dec 17, 2006December 17th, 2006, 12:15 pm EST

After you type your post, insted of clicking "Submit Post" click "Save and Add Pictures." That will take you to a form to add pictures. You can get to the same form by clicking edit link (little scissors in the top right corner) of the top post in this topic.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

Troutnabout
Posts: 20

Troutnabout on Dec 17, 2006December 17th, 2006, 1:28 pm EST

I've tried that several times.Could it bethat the file is too big? It's 1.25 MB

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Dec 17, 2006December 17th, 2006, 4:11 pm EST

Okay, yeah, that would be it. The limit is 1MB.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist