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

Salmonflies
Pteronarcys californica

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

The North Fork Couer d'Alene River in Idaho

Stream photos

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Glossosoma (Little Brown Short-horned Sedge) Caddisfly Larva Glossosoma (Little Brown Short-horned Sedge) Caddisfly Larva

Dorsal view of a Glossosoma (Glossosomatidae) (Little Brown Short-horned Sedge) Caddisfly Larva from the Yakima River in Washington

I caught this tiny larva without a case, but it seems to key pretty clearly to to Glossosomatidae. From there, the lack of sclerites on the mesonotum points to either Glossosoma or Anagapetus. Although it's difficult to see in a 2D image from the microscope, it's pretty clear in the live 3D view that the pronotum is only excised about 1/3 of its length to accommodate the forecoxa, not 2/3, which points to Glossosoma at Couplet 5 of the Key to Genera of Glossosomatidae Larvae.

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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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Mother's day hatch in Montana

Millcreek
Healdsburg, CA

Posts: 344

Millcreek on May 8, 2016May 8th, 2016, 10:52 am EDT

Thought some of you might be interested in this. https://www.youtube.com/watch?v=t5N_1ivjOJ4

"If we knew what it was we were doing, it would not be called research, would it?"
-Albert Einstein

TimCat

Alanson, MI

Posts: 121

TimCat on May 9, 2016May 9th, 2016, 3:58 pm EDT

Looks like an upstream migration going on there.

"If I'm not going to catch anything, then I 'd rather not catch anything on flies" - Bob Lawless

Wbranch

York & Starlight PA

Posts: 2635

Wbranch on May 13, 2016May 13th, 2016, 3:37 pm EDT

When there is an emergence of that magnitude of any aquatic insect it's time to head to shore and have lunch and a couple of high balls and take a nap until the emergence wanes or just row out and go to the nearest bar.

Catskill fly fisher for fifty-five years.

Losthwy
Posts: 5

Losthwy on Jun 10, 2016June 10th, 2016, 7:25 pm EDT

We have the same thing here in Colorado on the Arkansas River. The key is getting ABOVE the hatch.

Planettrout

Los Angeles, CA / Pullman, WA

Posts: 53

Planettrout on Jun 11, 2016June 11th, 2016, 6:53 am EDT

The Mother's Day Hatch appears earlier here in CA, generally in late March on the Lower Owens River in the Eastern Sierras. I have seen it as thick as those Caddis on the Madison in the video link above...

This is a pattern for the emerging Brachycentrus I use. It is a variation of Craig Matthew's Guide Serendipity that he created for the hatch on the Madison:

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MOTHER’S DAY MUNCH (Caddis Pupa, Brachycentrus) - Matthews/Variant

HOOK: TMC 226 BL, #14 – #18

THREAD: UTC 70 Denier, Fl. White – Under Abdomen / Tiemco 16/0, Black – Thorax forward

ABDOMEN: Datum Glo-Brite Floss Fl. Chartreuse

RIB: UTC Wire, Gunmetal Blue, x-sm

WING: Marc Petitjean CDC, #5 White – * Two tips tied in opposed

THORAX: UV2 Dyed Peacock Eye, Black

I fish it from the bottom to the top of the water column...and does it work... :)

PT/TB

Daughter to Father: "How many arms do you have, how many fly rods do you need?"

http://planettrout.wordpress.com/

Martinlf