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.

Dorsal view of a Grammotaulius betteni (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington
This is a striking caddis larva with an interesting color pattern on the head. Here are some characteristics I was able to see under the microscope, but could not easily expose for a picture:
- The prosternal horn is present.
- The mandible is clearly toothed, not formed into a uniform scraper blade.
- The seems to be only 2 major setae on the ventral edge of the hind femur.
- Chloride epithelia seem to be absent from the dorsal side of any abdominal segments.
Based on these characteristics and the ones more easily visible from the pictures, this seems to be Grammotaulius. The key's description of the case is spot-on: "Case cylindrical, made of longitudinally arranged sedge or similar leaves," as is the description of the markings on the head, "Dorsum of head light brownish yellow with numerous discrete, small, dark spots." The spot pattern on the head is a very good match to figure 19.312 of Merritt R.W., Cummins, K.W., and Berg, M.B. (2019). The species ID is based on Grammotaulius betteni being the only species of this genus known in Washington state.
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.

Orn
.

Posts: 29
Orn on Nov 9, 2012November 9th, 2012, 6:54 am EST
deleted
.
Falsifly
Falsifly's profile picture
Hayward, WI.

Posts: 660
Falsifly on Nov 9, 2012November 9th, 2012, 10:46 am EST
Two GIANT thumbs up Orn.
Falsifly
When asked what I just caught that monster on I showed him. He put on his magnifiers and said, "I can't believe they can see that."
Adirman
Adirman's profile picture
Monticello, NY

Posts: 479
Adirman on Nov 11, 2012November 11th, 2012, 9:47 am EST
Smokin!!!
Jesse
Jesse's profile picture
Posts: 378
Jesse on Nov 15, 2012November 15th, 2012, 11:50 am EST
Great shots in that video man i loved seeing them! Haha i would stay exactly where your at because it seems as though you have a lot of fishy business to continuously take care of around there ;)
Most of us fish our whole lives..not knowing its not the fish that we are after.
http://www.filingoflyfishing.com

Quick Reply

Troutnut.com is copyright © 2004-2024 (email Jason). privacy policy