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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.

Dorsal view of a Amphizoa (Amphizoidae) Beetle Larva from Sears Creek in Washington
This is the first of it's family I've seen, collected from a tiny, fishless stream in the Cascades. The three species of this genus all live in the Northwest and are predators that primarily eat stonefly nymphs Merritt R.W., Cummins, K.W., and Berg, M.B. (2019).
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.

Nigronia serricornis (Fishfly) Hellgrammite Larva Pictures

I unfortunately lost some of the originals of this specimen, so I was only able to re-process about half the pictures in the 2023 update.

Artistic view of a Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York
Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York
Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York
Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York
Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York
A little experiment with backlighting.

Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York
Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York
Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York
Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York
Closeup of a couple of the gills.

Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York
The rear appendages on these larvae are quite good at gripping the rocks as they're doing here.

Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York
Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York
Nigronia serricornis (Corydalidae) (Fishfly) Hellgrammite Larva from Factory Brook in New York

This hellgrammite was collected from Factory Brook in New York on April 24th, 2007 and added to Troutnut.com by Troutnut on April 24th, 2007.


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Nigronia serricornis (Fishfly) Hellgrammite Larva Pictures

Collection details
Location: Factory Brook, New York
Date: April 24th, 2007
Added to site: April 24th, 2007
Author: Troutnut
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