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.

Upper Titcomb Lake

From Titcomb Basin in Wyoming

Stream photos

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Sweltsa (Sallfly) Stonefly Nymph Sweltsa (Sallfly) Stonefly Nymph

Dorsal view of a Sweltsa (Chloroperlidae) (Sallfly) Stonefly Nymph from the Yakima River in Washington

This species was fairly abundant in a February sample of the upper Yakima.

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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.

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Farmington River Mayfly

Phels29 has attached these 3 pictures to aid in identification. The message is below.

Phels29
collinsville, CT

Posts: 1

Phels29 on Apr 29, 2009April 29th, 2009, 4:14 pm EDT

As somebody who is somewhat new to I have learned the technical aspect of Fly Fishing, but I am still learning what alot of the Flys are. So when I am out on the river and somebody says there is a hatch of red quills or the March Browns are emerging right now I am kinda scratching my head like everybody is speaking greek. I was able to snag this fly by the river today and I was curious to know if anybody could help me identify this. It was caught on the Farmington River in Connecticut in the evening.

GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681

GONZO on Apr 29, 2009April 29th, 2009, 4:26 pm EDT

This is male Callibaetis dun, aka "speckled dun." It's interesting that you found it on the Farmington; they are usually more common on ponds and lakes (still water). Did you see many of them?

Byhaugh
Hawaii

Posts: 56

Byhaugh on Feb 25, 2015February 25th, 2015, 9:06 am EST

We see them on the slower stretches of the zhenry's Fork if I'm not mistaken.