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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.

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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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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