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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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Male Isonychia bicolor (Mahogany Dun) Mayfly Spinner Pictures

I got several really nice pictures of this spinner. I also collected a female on the same trip.

This mayfly was collected from the West Branch of Owego Creek in New York on August 9th, 2006 and added to Troutnut.com by Troutnut on August 11th, 2006.

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Male Isonychia bicolor (Mahogany Dun) Mayfly Spinner Pictures

Collection details
Location: West Branch of Owego Creek, New York
Date: August 9th, 2006
Added to site: August 11th, 2006
Author: Troutnut
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