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Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

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Female Stenonema modestum (Cream Cahill) Mayfly Spinner Pictures

Although I couldn't key out this female spinner, I'm fairly comfortable calling her Stenonema modestum based on the markings on the abdomen and their similarity to those on the males of this species. This one probably came from the Namekagon River, although there's a possibility it came from the West Fork of the Chippewa River, because it was found in the truck after fishing those streams on back-to-back days.

This mayfly was collected from the Namekagon River in Wisconsin on June 22nd, 2021 and added to Troutnut.com by Troutnut on June 24th, 2021.

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Female Stenonema modestum (Cream Cahill) Mayfly Spinner Pictures

Collection details
Location: Namekagon River, Wisconsin
Date: June 22nd, 2021
Added to site: June 24th, 2021
Author: Troutnut
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