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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

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.

Oldredbarn's profile picture
Novi, MI

Posts: 2600
Oldredbarn on Mar 18, 2013March 18th, 2013

Our own Mark "Softhackle" Libertone is now international! Hans Weilenmann has a tying demo of Mark's Lil' Dorothy on his site and mentions him as the originator! By name...

Wow! Way to go Libertone! Will you still speak with us mere plebs here on Troutnut? :)

"Even when my best efforts fail it's a satisfying challenge, and that, after all, is the essence of fly fishing." -Chauncy Lively

"Envy not the man who lives beside the river, but the man the river flows through." Joseph T Heywood
PaulRoberts's profile picture

Posts: 1776
PaulRoberts on Mar 19, 2013March 19th, 2013, 7:10 am EDT
Neat! Thanks for posting it.
Crepuscular's profile picture
Boiling Springs, PA

Posts: 920
Crepuscular on Mar 19, 2013March 19th, 2013, 9:35 am EDT
I love it. Cool post, great fly.
Posts: 560
Sayfu on Mar 20, 2013March 20th, 2013, 6:15 am EDT
Mark would just cringe at my bastardized soft hackle that I have been tying lately, and dying to try out. I use my dependable bead at the head, and then place in some micro rubber legs behind the bead the flex floss type that become the caddis pupa horns that hang back, after I dub the body then the soft hackle of a sage grouse that has some beautiful prominent barred hackle.
Fortunately for we fly anglers there are folks like Mark that retain the tradition. Good for Mark, and I always take the time to enjoy Hans Weilenmann.

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