Lateral view of a Male Baetis (Baetidae) (Blue-Winged Olive) Mayfly Dun from Mystery Creek #43 in New York

Blue-winged Olives
Baetis

Tiny Baetis mayflies are perhaps the most commonly encountered and imitated by anglers on all American trout streams due to their great abundance, widespread distribution, and trout-friendly emergence habits.

View from Upper to Lower Titcomb Lake

From Titcomb Basin in Wyoming

Stream photos

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Setvena wahkeena (Wahkeena Springfly) Stonefly Nymph Setvena wahkeena (Wahkeena Springfly) Stonefly Nymph

Dorsal view of a Setvena wahkeena (Perlodidae) (Wahkeena Springfly) Stonefly Nymph from Mystery Creek #199 in Washington

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.

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.

collected from Bitterroot yesterday Drake

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

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

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