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.

View from Upper to Lower Titcomb Lake

From Titcomb Basin in Wyoming

Stream photos

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Skwala (Large Springfly) Stonefly Nymph Skwala (Large Springfly) Stonefly Nymph

Dorsal view of a Skwala (Perlodidae) (Large Springfly) Stonefly Nymph from the Yakima River in Washington

This Skwala nymph still has a couple months left to go before hatching, but it's still a good representative of its species, which was extremely abundant in my sample for a stonefly of this size. It's obvious why the Yakima is known for its Skwala hatch.

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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.

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Cinygma mayflies

This topic is about the Mayfly Genus Cinygma

This uncommon Western genus is closely related to Cinygmula. It rarely provides good hatches.

Example specimens

Bnewell

Site Editor
Kennewick, Washington

Posts: 115

Bnewell on Jul 15, 2011July 15th, 2011, 12:20 pm EDT

Perhaps one reason Cinygma mayflies do not create much interest for fishermen is because of their habit. They seem to prefer these small headwater streams, often streams without trout.

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Jul 15, 2011July 15th, 2011, 12:23 pm EDT

Thanks Bob. I've never seen one of them and wondered where I might find them. There are records of two species of Cinygma in the Fairbanks area, though, so I'll keep a close eye out for them in my samples and maybe try some little headwaters.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

Entoman

Northern CA & ID

Posts: 2604

Entoman on Jul 19, 2011July 19th, 2011, 11:00 pm EDT

It's interesting that it is perching like an ephemerillid.

"It's not that I find fishing so important, it's just that I find all other endeavors of Man equally unimportant... And not nearly as much fun!" Robert Traver, Anatomy of a Fisherman