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.

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Pycnopsyche guttifera (Great Autumn Brown Sedge) Caddisfly Larva Pycnopsyche guttifera (Great Autumn Brown Sedge) Caddisfly Larva

Dorsal view of a Pycnopsyche guttifera (Limnephilidae) (Great Autumn Brown Sedge) Caddisfly Larva from the Yakima River in Washington

This specimen appears to be of the same species as this one collected in the same spot two months earlier. The identification of both is tentative. This one suffered some physical damage before being photographed, too, so the colors aren't totally natural. I was mostly photographing it to test out some new camera setting idea, which worked really well for a couple of closeups.

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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.

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.

Caddis , Page 2

PaulRoberts

Colorado

Posts: 1776

PaulRoberts on Mar 7, 2013March 7th, 2013, 7:24 am EST

I was going to say Neophylax as well. When did you take the photo? I thought they were summer aestivators and fall emergers.

Each specimen optimizing flow velocity creating a group pattern that tracks the laminar flow like smoke in a wind tunnel?

I was thinking this would be another good project for a mathematician trying to discern emergent properties in complex systems.

Crepuscular

Boiling Springs, PA

Posts: 920

Crepuscular on Mar 7, 2013March 7th, 2013, 8:37 am EST

I was going to say Neophylax as well. When did you take the photo? I thought they were summer aestivators and fall emergers.

The specimens were collected, photographed and identified on Tuesday March 5, 2013. Same day as the photo of the rock was taken. I do not have the species key for Neophylax so I can't tell you what actual species we have there.

Creno
Grants Pass, OR

Posts: 302

Creno on Mar 7, 2013March 7th, 2013, 12:59 pm EST

Neophylax ornatus is a widespread common eastern species which emerges in a couple months rather than in the fall like most Neophylax. But there could be other species that emerge early as what is known about life history for most of the species is based on very few records/studies.