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.

A trackless paradise two days deep in the Yellowstone backcountry

From Mystery Creek # 218 in Wyoming

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)

Male Baetidae (Blue-Winged Olive) Mayfly Dun Male Baetidae (Blue-Winged Olive) Mayfly Dun

Lateral view of a Male Baetidae (Blue-Winged Olive) Mayfly Dun from Mystery Creek #308 in Washington

This dun emerged from a mature nymph on my desk. Unfortunately its wings didn't perfectly dry out.

7 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.

Neoephemera

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

CalebBoyle
Charlotte, NC

Posts: 11

CalebBoyle on Mar 13, 2008March 13th, 2008, 1:29 pm EDT

Jason,
I sent you an email about this yesterday-- I don't know if it went through so I thought I would post it on the board for everyone.

This week I collected insects for my bug aquarium taht I set up each spring. The day after, I was looking over all the bugs in the tank, and what do you know, I found another Neoephemera! The good news is it is a nymph and it is alive and well in the tank. Hopefully it will survive and I can get some photos of the adult. I did not want to remove it from the tank, but I did get a photo of the nymph from the outside.

Are there some features I should be looking for to possibly identify the species?

Caleb

Taxon

Site Editor
Plano, TX

Posts: 1311

Taxon on Mar 13, 2008March 13th, 2008, 8:04 pm EDT

Caleb,

Are there some features I should be looking for to possibly identify the species?

You have two species of Neoephemera in North Carolina, N. purpurea and N. youngi. They are easily differentiated by mature body length. N. purpurea achieves a length of ~16mm, whereas the smaller N. youngi achieves a length of only ~10mm.

Best regards,
Roger Rohrbeck
www.FlyfishingEntomology.com

Troutnut