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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Skwala (Large Springfly) Stonefly Nymph Skwala (Large Springfly) Stonefly Nymph

Dorsal view of a Skwala (Perlodidae) (Large Springfly) Stonefly Nymph from the Yakima River in Washington

This Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.

6 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.

Male Hexagenia atrocaudata (Late Hex) Mayfly Spinner Pictures

Male Hexagenia atrocaudata (Ephemeridae) (Late Hex) Mayfly Spinner from the Namekagon River in Wisconsin

Dorsal view of a Male Hexagenia atrocaudata (Ephemeridae) (Late Hex) Mayfly Spinner from the Namekagon River in Wisconsin

Ruler view of a Male Hexagenia atrocaudata (Ephemeridae) (Late Hex) Mayfly Spinner from the Namekagon River in Wisconsin The smallest ruler marks are 1 mm.

Artistic view of a Male Hexagenia atrocaudata (Ephemeridae) (Late Hex) Mayfly Spinner from the Namekagon River in Wisconsin

Ventral view of a Male Hexagenia atrocaudata (Ephemeridae) (Late Hex) Mayfly Spinner from the Namekagon River in Wisconsin

This mayfly was collected from the Namekagon River in Wisconsin on July 24th, 2005 and added to Troutnut.com by Troutnut on April 15th, 2006.

Discussions of this Spinner

mayflysneed

1 replies

Posted by Irdawson on Dec 2, 2010

Last reply on Dec 2, 2010 by Taxon

need places in florida that have mayflies,lakes or rivers.thanksin advance

Nice

Posted by Botebearing on Jan 20, 2010

Last reply on Jan 20, 2010 by Botebearing

really nice pictures.Garden Light

Mayflies

2 replies

Posted by Fishcraze on May 27, 2009

Last reply on May 31, 2009 by Trtklr

I know in North Alabama these flies usually hatch in Jun. What climate/water temperatures are required for hatching? Does it normally have to be dry/no rain for a week?

Thanks to anyone who can answer these questions. I promised my 12 year old, I was going to take him this year and I'm trying to plan my leave at the closest possible time.

Fishcraze

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