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

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.

Case view of a Pycnopsyche guttifera (Limnephilidae) (Great Autumn Brown Sedge) Caddisfly Larva from the Yakima River in Washington
It's only barely visible in one of my pictures, but I confirmed under the microscope that this one has a prosternal horn and the antennae are mid-way between the eyes and front of the head capsule.

I'm calling this one Pycnopsyche, but it's a bit perplexing. It seems to key definitively to at least Couplet 8 of the Key to Genera of Limnephilidae Larvae. That narrows it down to three genera, and the case seems wrong for the other two. The case looks right for Pycnopsyche, and it fits one of the key characteristics: "Abdominal sternum II without chloride epithelium and abdominal segment IX with only single seta on each side of dorsal sclerite." However, the characteristic "metanotal sa1 sclerites not fused, although often contiguous" does not seem to fit well. Those sclerites sure look fused to me, although I can make out a thin groove in the touching halves in the anterior half under the microscope. Perhaps this is a regional variation.

The only species of Pycnopsyche documented in Washington state is Pycnopsyche guttifera, and the colors and markings around the head of this specimen seem to match very well a specimen of that species from Massachusetts on Bugguide. So I am placing it in that species for now.

Whatever species this is, I photographed another specimen of seemingly the same species from the same spot a couple months later.
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.

Softhackle has attached these 3 pictures. The message is below.
Pleasant Gap, PA

Posts: 1197
Shawnny3 on Sep 7, 2007September 7th, 2007, 9:57 am EDT
Sounds like it was great, Jason. Any fishing accomplished?

Jewelry-Quality Artistic Salmon Flies, by Shawn Davis
Troutnut's profile picture
Bellevue, WA

Posts: 2758
Troutnut on Sep 7, 2007September 7th, 2007, 10:04 am EDT
I caught some grayling, but the catching wasn't great. The fishing was.
Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist
Lancaster, PA

Posts: 81
Lam on Sep 7, 2007September 7th, 2007, 10:38 am EDT

Have you fished the Genny in the potter county area, just north of coudersport? I fished it last winter, my son was hunting deer around Gold/Genesee area with my brother-in-law. I decided to try the Genny for the first time in about 25 years. I got into some hold over rainbows and a few browns. The stream is pretty small in that area and there are a few branches of it that come together to form the main stream.
Konchu's profile picture
Site Editor

Posts: 498
Konchu on Sep 7, 2007September 7th, 2007, 2:34 pm EDT
When i was there in '99, we experienced the last part of an Ephoron hatch that was memorable. What hatches have others experienced or fished on the Genesee?
Softhackle's profile picture
Wellsville, NY

Posts: 540
Softhackle on Sep 7, 2007September 7th, 2007, 4:02 pm EDT
I've never fished the Genesee in PA, but know well where they are. I believe there are three branches, east, west and middle. They come together in the very small town of Genesee PA to form the main river which travels into NY. The fishing from PA into NY is very good, especially in the Shongo, NY area, but the NO KILL starts at the bridge in Shongo, traveling north 2.5 miles. There's some very nice water there, but be cautious, there are Timber Rattlers around in PA In Potter County.

My experience with the hatches are good. We have a very good Ephemerella dorothea hatch the end of May. We have NO Quill Gordon hatch that I'm aware of, but good olive (Baetis) hatches in the spring. Also some really good Isonychia hatches if the water doesn't get too low and warm in the later season. The Genny is plagued by low water and warm temps. Despite this we have a very good hold over rate, and as I said earlier, the river is open to fishing all year long for trout. The tribs close down at the end of the regular season, which is now October 15. The limit is 5 trout per day on the river with only two fish out of the five allowed over 12", but since I fly fish, that doesn't really matter much.

I have lived in Wellsville 26 years and fished and loved this river emensely. In 1999, I along with a friend, helped start the Upper Genesee River Chapter of TU. We are a small chapter, but we keep a close eye on the river.

"I have the highest respect for the skilled wet-fly fisherman, as he has mastered an art of very great difficulty." Edward R. Hewitt

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