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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.

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington
This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.
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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Xavier_Carp has attached this picture to aid in identification. The message is below.
Xavier_Carp
Posts: 13
Xavier_Carp on Dec 18, 2008December 18th, 2008, 3:12 pm EST
Hi guys, this one is a caddis I think belon to the limnephiliidea family, any info abou it?
I'm starting to classify the bgs in my area, ecause there is no information available, thanks for your help.
Taxon
Taxon's profile picture
Site Editor
Plano, TX

Posts: 1311
Taxon on Dec 18, 2008December 18th, 2008, 3:38 pm EST
Xavier-

Rather than being of family Limnephilidae, I believe your larva to be one of the Trumpet-Net Caddisflies of family Polycentropodidae. Yes, some of them are green.
Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

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