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.

Stream photos

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Onocosmoecus (Great Late-Summer Sedge) Caddisfly Larva Onocosmoecus (Great Late-Summer Sedge) Caddisfly Larva

Lateral view of a Onocosmoecus (Limnephilidae) (Great Late-Summer Sedge) Caddisfly Larva from the Yakima River in Washington

This specimen keys pretty easily to Onocosmoecus, and it closely resembles a specimen from Alaska which caddis expert Dave Ruiter recognized as this genus. As with that specimen, the only species in the genus documented in this area is Onocosmoecus unicolor, but Dave suggested for that specimen that there might be multiple not-yet-distinguished species under the unicolor umbrella and it would be best to stick with the genus-level ID. I'm doing the same for this one.

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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.

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.

Stonefly, very dark but what else can I find out?

Isoperla (Stripetails and Yellow Stones) Stonefly Adult

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Lateral view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Adult from Salmon Creek in New York

A friend brought me this stonefly to photograph. He found it floating on the surface of a trout stream with its wings in a crippled position.

Collected May 4, 2006 from Salmon Creek in New York

Added by Troutnut on May 22, 2006

Collected May 4, 2006 from Salmon Creek in New York and added by Troutnut on May 22, 2006

IanB
Posts: 3

IanB on May 5, 2009May 5th, 2009, 6:25 am EDT

Ok all, I am finding this hobie increasingly interesting and exciting. I no longer will just be guessing on the river, but actually selecting flies that best represent the actual bugs I am finding.

Here is another one from yesterday's trip, there are many of these flying around as adult, some size 14, others down to size 18, I grabbed one of the larger ones (just pushing size 14) and got some better macro pictures.

Thanks for the help in identifying this 'small' stonefly (that is my identification at this point anyway). Taken May 4th 2009 in the North Shore of Mass.

I apologize, but although I have re-sized these pictures (way down in some cases) I can not get them to display here. Links are posted instead.

IB

https://stillmaninteriors.sslpowered.com/Images/DSCN2185.JPG

other angle

https://stillmaninteriors.sslpowered.com/Images/DSCN2182.JPG

And another angle

https://stillmaninteriors.sslpowered.com/Images/DSCN2185.JPG

GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681

GONZO on May 5, 2009May 5th, 2009, 10:08 am EDT

IanB-

Your stonefly is a member of the Taeniopterygidae, aka "winter stoneflies" or "willowflies." The smaller stoneflies that you saw might belong to another family, the Nemouridae, aka "spring stoneflies" or "forestflies." The emergence of some members of these two families overlaps at this time of year. (They look much alike, but the nemourids are generally smaller, emerge later, and have shorter second tarsal segments.)

BTW, per your previous thread, the #14 mayfly nymphs in the cup with your damselfly nymph are probably Hendrickson nymphs (Ephemerella subvaria).