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.

View from atop the permafrost slump

From the Selawik River in Alaska

Stream photos

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Perlodidae (Springflies and Yellow Stones) Stonefly Nymph Perlodidae (Springflies and Yellow Stones) Stonefly Nymph

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.

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.

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Mix-up

Siphlonurus autumnalis (Gray Drake) Mayfly Nymph

1 Picture

Siphlonurus autumnalis (Siphlonuridae) (Gray Drake) Mayfly Nymph from Crazy Beaver Spring in Montana

Collected August 30, 2007 from Crazy Beaver Spring in Montana

Added by Bnewell on June 28, 2011

Collected August 30, 2007 from Crazy Beaver Spring in Montana and added by Bnewell on June 28, 2011

GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681

GONZO on Jul 2, 2011July 2nd, 2011, 8:35 am EDT

I've really been enjoying looking at Dr. Newell's additions to the "Aquatic Insect Encyclopedia," but there seems to have been some sort of mix-up here. The 2nd photograph is an female ephemerellid dun, possibly something like Ephemerella tibialis.

Entoman

Northern CA & ID

Posts: 2604

Entoman on Jul 2, 2011July 2nd, 2011, 2:38 pm EDT

Looks like tibialis to me also, but I can't find where the photos are associated other than in this thread. As I write this the dun photo disappeared so I think Jason's on it Lloyd.

Kurt

"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Jul 2, 2011July 2nd, 2011, 3:09 pm EDT

The dun photo's still there. I sent Bob an email about it. I didn't want to delete it until he sees which one is in the wrong place, so it's easy for him to put it back online in the right place.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist