Header image
Enter a name
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.
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.

Report at a Glance

General Regioneurope
Specific LocationSlovenia
Dates Fished2010
Fish Caughtgrayling, marmorata trout, rainbow trout, brown trout, huchen

Details and Discussion

Luc384
Belgium / zoersel

Posts: 14
Luc384 on Oct 27, 2010October 27th, 2010, 3:22 am EDT
I just finished a new video about flyfishing in Slovenia, the film is about 1h40 minutes long
and covers 19 rivers in Slovenia.
Here's the teaser...


Kind regards ,
Luc
The worst day fishing is still better than the best day at work!!
www.flyfishingpassion.net
PaulRoberts
PaulRoberts's profile picture
Colorado

Posts: 1776
PaulRoberts on Oct 27, 2010October 27th, 2010, 11:32 am EDT
What a beautiful country. Thanks for that peek.

Quick Reply

Related Discussions

Topic
Replies
Last Reply
1
Mar 30, 2016
by Taxon
Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy