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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 Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington
This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
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.

Leskorcala has attached these 3 pictures to aid in identification. The message is below.
Leskorcala
Posts: 16
Leskorcala on Jun 17, 2020June 17th, 2020, 6:46 am EDT
Hello,
i collected yesterday from Montana's Bitterrroot river drake may fly I believe is green drake Ephemerella grandis , many confused with Gray Drake but in June we do have Green drakes here first and than Gray later towards August. Problem is that you dont see much green tones on the body , more like dark gray in my opinion, Wanted to pick few brains if that is in fact Green drake ?
Millcreek
Healdsburg, CA

Posts: 344
Millcreek on Jun 17, 2020June 17th, 2020, 8:37 am EDT
It isn't Ephemerella grandis now known as Drunella grandis because it has two tails rather than three. It's probably a Siphlonurus species otherwise known as a Gray Drake.
"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein
Partsman
Partsman's profile picture
bancroft michigan

Posts: 321
Partsman on Jun 17, 2020June 17th, 2020, 10:41 am EDT
Thanks Millceek for the identification on that bug, I witnessed a hatch last night that brought up some nice fish. I could not identify the bugs, but the fish liked them. They were very similar to the above bug, but on the water at 9:30 pm who nows
Mike.
Jmd123
Jmd123's profile picture
Oscoda, MI

Posts: 2474
Jmd123 on Jun 17, 2020June 17th, 2020, 10:47 am EDT
So Mike, just how good did you do?

Jonathon
No matter how big the one you just caught is, there's always a bigger one out there somewhere...
Leskorcala
Posts: 16
Leskorcala on Jun 17, 2020June 17th, 2020, 2:29 pm EDT
thanks for quick replay , appreciate your expertise. I wanted point out that this Gray drake has less bulkier or say more robust body as Green Drake I have seen on Henry's Fork over the years.Green drakes i have seen are quite larger than of Gray drake

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