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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
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.

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.
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Sla9104
Sla9104's profile picture
Ireland

Posts: 3
Sla9104 on May 29, 2014May 29th, 2014, 5:39 pm EDT
Hi everyone, new here names Chris from Ireland. Im 22
Needless to say on here i love fishing iv been fishing since as far back as i can remember my first fish been a brown trout
Im flyfishing about 7 years and tie my own flies
Havnt been fishin much the last year or so but the past few weeks iv been mad at it like i never stopped
My main style of fishing is with a fly rod and want to tick off as many different kinds of fish on the fly
Looking at some of the pics of cracking fish on here and hope to catch some nice ones soon to upload on here
All the best
Chris
A trout is a moment of beauty known only to those who seek it." ~by Arnold Gingrich~
Wbranch
Wbranch's profile picture
York & Starlight PA

Posts: 2635
Wbranch on May 29, 2014May 29th, 2014, 6:05 pm EDT
Welcome Chris. Hope you enjoy this web site and forum.
Catskill fly fisher for fifty-five years.
PaulRoberts
PaulRoberts's profile picture
Colorado

Posts: 1776
PaulRoberts on May 30, 2014May 30th, 2014, 2:27 pm EDT
Welcome! Be interested in hearing about Irish fishing.

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