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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.

Male Stenonema ithaca (Light Cahill) Mayfly Dun Pictures

This dun emerged from a nymph in one of the bowls on my table while I was sorting. I photographed it with the nymphal shuck, and it seems to be of the same species as a nymph I photographed from the same sample.

This mayfly was collected from Paradise Creek in Pennsylvania on May 29th, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.

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