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.

Mount Deborah and Hess Mountains. Two of the greatest peaks of the Alaska Range rise behind the braided, glacial Susitna River. These massive mountains are 35 miles north of where I took this picture.

From the Susitna River in Alaska

Stream photos

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Isoperla (Stripetails and Yellow Stones) Stonefly Adult Isoperla (Stripetails and Yellow Stones) Stonefly Adult

Dorsal view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Adult from Mystery Creek #308 in Washington

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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.

Male Epeorus vitreus (Sulphur) Mayfly Spinner Pictures

Lateral view of a Male Epeorus vitreus (Heptageniidae) (Sulphur) Mayfly Spinner from Penn's Creek in Pennsylvania

Male Epeorus vitreus (Heptageniidae) (Sulphur) Mayfly Spinner from Penn's Creek in Pennsylvania

Dorsal view of a Male Epeorus vitreus (Heptageniidae) (Sulphur) Mayfly Spinner from Penn's Creek in Pennsylvania

Ruler view of a Male Epeorus vitreus (Heptageniidae) (Sulphur) Mayfly Spinner from Penn's Creek in Pennsylvania The smallest ruler marks are 1 mm.

This mayfly was collected from Penn's Creek in Pennsylvania on May 26th, 2007 and added to Troutnut.com by Troutnut on June 4th, 2007.

Discussions of this Spinner

Probably another E. vitreus

Posted by GONZO on Oct 28, 2008

Last reply on Oct 28, 2008 by GONZO

This looks like a male vitreus spinner. Although blurry, the terminalia look about right. The dark humeral vein and the little dark marks on the middle rear of segments 3-5 and 7-9 also seem to fit.

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