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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.

Dorsal view of a Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from the Yakima River in Washington
Some characteristics from the microscope images for the tentative species id: The postero-lateral projections are found only on segment 9, not segment 8. Based on the key in Jacobus et al. (2014), it appears to key to Neoleptophlebia adoptiva or Neoleptophlebia heteronea, same as this specimen with pretty different abdominal markings. However, distinguishing between those calls for comparing the lengths of the second and third segment of the labial palp, and this one (like the other one) only seems to have two segments. So I'm stuck on them both. It's likely that the fact that they're immature nymphs stymies identification in some important way.
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.

Photos by Troutnut from the Cedar River in Washington

Coastal cutthroat
The Cedar River in Washington
The Cedar River in Washington
The Cedar River in Washington
Cedar River Trail -- easiest access I've ever had to a non-roads

From the Cedar River in Washington
The Cedar River in Washington
The Cedar River in Washington
The Cedar River in Washington
The Cedar River in Washington
The Cedar River in Washington
Giant tree rootwad overhanging the river with huge boulders dang

From the Cedar River in Washington
It's not all cutthroat -- here's a little 13" rainbow in the net

Comments / replies

Wbranch
Wbranch's profile picture
York & Starlight PA

Posts: 2635
Wbranch on Jul 24, 2017July 24th, 2017, 11:10 pm EDT
Any possibility this might have summer, or winter, run steelhead?
Catskill fly fisher for fifty-five years.
Troutnut
Troutnut's profile picture
Administrator
Bellevue, WA

Posts: 2758
Troutnut on Jul 25, 2017July 25th, 2017, 3:41 am EDT
It does have a steelhead population, but I don't think the river's open to fishing when they're in.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
Wbranch
Wbranch's profile picture
York & Starlight PA

Posts: 2635
Wbranch on Jul 28, 2017July 28th, 2017, 4:57 am EDT
Maybe they use it as a nursery to get eggs and milt.
Catskill fly fisher for fifty-five years.
Jmd123
Jmd123's profile picture
Oscoda, MI

Posts: 2474
Jmd123 on Jul 31, 2017July 31st, 2017, 10:11 am EDT
LOVE the sea-run cutts AND the places you are catching them! Keep the photos coming.

Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...
Creno
Grants Pass, OR

Posts: 302
Creno on Jul 31, 2017July 31st, 2017, 5:21 pm EDT
couple of those look like big-head fish not getting enough food. Maybe perspective........

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