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.

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Kogotus Stonefly Nymph Kogotus Stonefly Nymph

Dorsal view of a Kogotus (Perlodidae) Stonefly Nymph from Mystery Creek #199 in Washington

This one pretty clearly keys to Kogotus, but it also looks fairly different from specimens I caught in the same creek about a month later in the year. With only one species of the genus known in Washington, I'm not sure about the answer to this ID.

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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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Nymph ID please help

Cherylkorca has attached these 11 pictures to aid in identification. The message is below.

Cherylkorca

Posts: 4

Cherylkorca on Feb 18, 2020February 18th, 2020, 4:50 pm EST

This last week I collected this larvae like Nymph and I am bit confused because i can not find anything close to this shape of bug ??? here are few images of it and thank you for your help, This guys was found in slower water under rock.

Wbranch

York & Starlight PA

Posts: 2635

Wbranch on Feb 19, 2020February 19th, 2020, 12:13 am EST

Is there any reason you posted three images of one picture and seven images of the other picture? I guess you wanted to make sure we saw it.

Catskill fly fisher for fifty-five years.

Millcreek
Healdsburg, CA

Posts: 344

Millcreek on Feb 19, 2020February 19th, 2020, 12:54 am EST

I think it might be a caddis, probably a member of the Hydropsychidae family. You can see what appear to be gills under the body and the filaments on the end of the body.

http://www.troutnut.com/topic/8581/Hydropsyche-larvae-and-pupae-californica

"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein

Creno
Grants Pass, OR

Posts: 302

Creno on Feb 19, 2020February 19th, 2020, 4:33 am EST

You are correct that it is a hydropsychid. And I would go with one of the Hydropsyche species.

Leskorcala
Posts: 16

Leskorcala on Feb 20, 2020February 20th, 2020, 2:11 pm EST

Thank you both for your help , I did collect few more today and they were in their tubular like gravel?sand cases , so its Caddis larvae for sure

Leskorcala
Posts: 16

Leskorcala on Feb 20, 2020February 20th, 2020, 2:16 pm EST

No , no reason sir , just mistake on my part , compute was not loading and when did it load all