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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.

Artistic view of a Perlodidae (Springflies and Yellow Stones) Stonefly Nymph from the Yakima River in Washington
This one seems to lead to Couplet 35 of the Key to Genera of Perlodidae Nymphs and the genus Isoperla, but I'm skeptical that's correct based on the general look. I need to get it under the microscope to review several choices in the key, and it'll probably end up a different Perlodidae.
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 Baetis tricaudatus (Blue-Winged Olive) Mayfly Dun Pictures

This female was associated with a male of the same species.

Lateral view of a Female Baetis tricaudatus (Baetidae) (Blue-Winged Olive) Mayfly Dun from Owasco Inlet in New York
Ruler view of a Female Baetis tricaudatus (Baetidae) (Blue-Winged Olive) Mayfly Dun from Owasco Inlet in New York The smallest ruler marks are 1 mm.
Dorsal view of a Female Baetis tricaudatus (Baetidae) (Blue-Winged Olive) Mayfly Dun from Owasco Inlet in New York
Female Baetis tricaudatus (Baetidae) (Blue-Winged Olive) Mayfly Dun from Owasco Inlet in New York
Female Baetis tricaudatus (Baetidae) (Blue-Winged Olive) Mayfly Dun from Owasco Inlet in New York
Female Baetis tricaudatus (Baetidae) (Blue-Winged Olive) Mayfly Dun from Owasco Inlet in New York
Ventral view of a Female Baetis tricaudatus (Baetidae) (Blue-Winged Olive) Mayfly Dun from Owasco Inlet in New York

This mayfly was collected from Owasco Inlet in New York on April 3rd, 2007 and added to Troutnut.com by Troutnut on April 3rd, 2007.

Discussions of this Dun

Maybe tricaudatus
25 replies
Posted by GONZO on Apr 4, 2007
Last reply on Apr 10, 2007 by Konchu
Based on size, emergence timing, and general appearance, I'd guess that this and the associated male are probably B. tricaudatus.

Start a Discussion of Dun

Female Baetis tricaudatus (Blue-Winged Olive) Mayfly Dun Pictures

Collection details
Location: Owasco Inlet, New York
Date: April 3rd, 2007
Added to site: April 3rd, 2007
Author: Troutnut
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