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.

I caught a nice brookie a few weeks earlier in this pool at the junction of a split channel in the stream. The huge fallen tree is great cover.

From the Mystery Creek # 23 in New York

Stream photos

Featured on the forum

Re: Trico emergers
In the Mayfly Genus Tricorythodes by Bwoklink (Martinlf replied)

Re: Trico Tips
In the Mayfly Genus Tricorythodes by Martinlf

Re: UV spectrum and trout
In General Discussion by Martinlf

Re: closing the gender gap in flyfishing
In General Discussion by Konchu (Smallflyguy replied)

Re: Fishing Kupa River, Slovenia
In Fishing Reports by Slocum (Fish1 replied)

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.

Unidentified Mayfly Kansas City, MO

Pdcox has attached this picture to aid in identification. The message is below.

Pdcox
Kansas city

Posts: 12

Pdcox on Apr 15, 2020April 15th, 2020, 5:11 am EDT

Well this guy about blew my mind. No idea mayflies were in man made lakes. This bug was about 3/4 inch body length. Found yesterday, James Reed Park, cloudy, windy, 48 degrees. I have enhanced the green of the eyeballs a bit in Photoshop so they stand out, but could definitely see the color au natural.
Any help appreciated

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Apr 15, 2020April 15th, 2020, 9:10 am EDT

Hi Paul-

I believe this female subimago to be Stenonema femoratum.

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

Pdcox
Kansas city

Posts: 12

Pdcox on Apr 15, 2020April 15th, 2020, 9:28 am EDT

Thank you sir

Pdcox
Kansas city

Posts: 12

Pdcox on Apr 16, 2020April 16th, 2020, 2:25 am EDT

Also, what clued you in to this being female?

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Apr 16, 2020April 16th, 2020, 5:24 am EDT

The clues to it being a female were the absence of male claspers sticking out beyond the abdomen, in combination with the smaller compound eyes characteristic of a female.

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com