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.
Featured on the forum
As far as I can tell, this species has only previously been reported from one site in Oregon along the Columbia gorge. However, the key characteristics are fairly unmistakable in all except for one minor detail:
— 4 small yellow spots on frons visible in photos
— Narrow occipital spinule row curves forward (but doesn’t quite meet on stem of ecdysial suture, as it's supposed to in this species)
— Short spinules on anterior margin of front legs
— Short rposterior row of blunt spinules on abdominal tergae, rather than elongated spinules dorsally
I caught several of these mature nymphs in the fishless, tiny headwaters of a creek high in the Wenatchee Mountains.
— 4 small yellow spots on frons visible in photos
— Narrow occipital spinule row curves forward (but doesn’t quite meet on stem of ecdysial suture, as it's supposed to in this species)
— Short spinules on anterior margin of front legs
— Short rposterior row of blunt spinules on abdominal tergae, rather than elongated spinules dorsally
I caught several of these mature nymphs in the fishless, tiny headwaters of a creek high in the Wenatchee Mountains.
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.
LowBudget on Apr 12, 2014April 12th, 2014, 4:16 am EDT
I had a couple of mayflies hatch in an aquarium. I had thought that I only had some stoneflies and beetle larvae in it but lo and behold.....
Any help in identifying these would be appreciated.
The larvae were collected from Trout Creek, a tributary of the West Branch of the Delaware River, located in Delaware County, New York.
Thank you
Ed
Any help in identifying these would be appreciated.
The larvae were collected from Trout Creek, a tributary of the West Branch of the Delaware River, located in Delaware County, New York.
Thank you
Ed
Ed
Low Budget Fly Tying and Fishing author of "Behind the Fly"
http://edengelman.com/BTF.html
Low Budget Fly Tying and Fishing author of "Behind the Fly"
http://edengelman.com/BTF.html
LowBudget on Apr 12, 2014April 12th, 2014, 10:16 am EDT
I have also posted the images on a Flickr page
https://www.flickr.com/photos/107447394@N07/sets/72157643851914463/
Ed
https://www.flickr.com/photos/107447394@N07/sets/72157643851914463/
Ed
Ed
Low Budget Fly Tying and Fishing author of "Behind the Fly"
http://edengelman.com/BTF.html
Low Budget Fly Tying and Fishing author of "Behind the Fly"
http://edengelman.com/BTF.html
Crepuscular on Apr 12, 2014April 12th, 2014, 12:29 pm EDT
Looks like a female Ephemerella subvaria to me. Although 10mm is a little small.
LowBudget on Apr 12, 2014April 12th, 2014, 4:09 pm EDT
Thank you
Ed
Ed
Ed
Low Budget Fly Tying and Fishing author of "Behind the Fly"
http://edengelman.com/BTF.html
Low Budget Fly Tying and Fishing author of "Behind the Fly"
http://edengelman.com/BTF.html
Quick Reply
Related Discussions
Topic
Replies
Last Reply
5
Sep 10, 2020
by Leskorcala
by Leskorcala
0
Oct 24, 2006
by Troutnut
by Troutnut