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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.

Ventral view of a Hydropsyche (Hydropsychidae) (Spotted Sedge) Caddisfly Larva from the Yakima River in Washington
With a bit of help from the microscope, this specimen keys clearly and unsurprisingly to Hydropsyche.
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.

Female Acroneuria lycorias (Golden Stone) Stonefly Adult Pictures

Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Ventral view of a Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Dorsal view of a Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Here's one of a couple shots of the empty nymphal shuck from which this stonefly emerged.

Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Ruler view of a Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York The smallest ruler marks are 1 mm.
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Lateral view of a Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Stonefly nymph close up. A stonefly nymph crawls along a styrofoam ball

Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York
Female Acroneuria lycorias (Perlidae) (Golden Stone) Stonefly Adult from Aquarium (collected somewhere in Catskills) in New York

This stonefly was collected from Aquarium (collected somewhere in Catskills) in New York on May 23rd, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.

Discussions of this Adult

Acroneuria (carolinensis?)
6 replies
Posted by GONZO on Oct 28, 2008
Last reply on Mar 19, 2012 by Entoman
This looks like Acroneuria, and the markings on the nymphal shuck seem to be a good match for carolinensis.

Start a Discussion of Adult

Female Acroneuria lycorias (Golden Stone) Stonefly Adult Pictures

Collection details
Location: Aquarium (collected somewhere in Catskills), New York
Date: May 23rd, 2007
Added to site: June 4th, 2007
Author: Troutnut
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