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.

Stream photos

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Zapada cinctipes (Tiny Winter Black) Stonefly Nymph Zapada cinctipes (Tiny Winter Black) Stonefly Nymph

Dorsal view of a Zapada cinctipes (Nemouridae) (Tiny Winter Black) Stonefly Nymph from the Yakima River in Washington

Nymphs of this species were fairly common in late-winter kick net samples from the upper Yakima River. Although I could not find a key to species of Zapada nymphs, a revision of the Nemouridae family by Baumann (1975) includes the following helpful sentence: "2 cervical gills on each side of midline, 1 arising inside and 1 outside of lateral cervical sclerites, usually single and elongate, sometimes constricted but with 3 or 4 branches arising beyond gill base in Zapada cinctipes." This specimen clearly has the branches and is within the range of that species.

13 Recently Added Photos

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.

Isoperla (Stripetails and Yellow Stones) Stonefly Adult Pictures

A friend brought me this stonefly to photograph. He found it floating on the surface of a trout stream with its wings in a crippled position.

Lateral view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Adult from Salmon Creek in New York

Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Adult from Salmon Creek in New York

This is one of my most "artsy" insect pictures so far. The stonefly's feet look like jewel-topped spires or some kind of alien guard towers. The out-of-focus background is the underside of the thorax.

Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Adult from Salmon Creek in New York

Ventral view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Adult from Salmon Creek in New York

Ruler view of a Isoperla (Perlodidae) (Stripetails and Yellow Stones) Stonefly Adult from Salmon Creek in New York The smallest ruler marks are 1 mm.

This stonefly was collected from Salmon Creek in New York on May 5th, 2006 and added to Troutnut.com by Troutnut on May 22nd, 2006.

Discussions of this Adult

Stonefly, very dark but what else can I find out?

1 replies

Posted by IanB on May 5, 2009

Last reply on May 5, 2009 by GONZO

Ok all, I am finding this hobie increasingly interesting and exciting. I no longer will just be guessing on the river, but actually selecting flies that best represent the actual bugs I am finding.

Here is another one from yesterday's trip, there are many of these flying around as adult, some size 14, others down to size 18, I grabbed one of the larger ones (just pushing size 14) and got some better macro pictures.

Thanks for the help in identifying this 'small' stonefly (that is my identification at this point anyway). Taken May 4th 2009 in the North Shore of Mass.

I apologize, but although I have re-sized these pictures (way down in some cases) I can not get them to display here. Links are posted instead.

IB

https://stillmaninteriors.sslpowered.com/Images/DSCN2185.JPG

other angle

https://stillmaninteriors.sslpowered.com/Images/DSCN2182.JPG

And another angle

https://stillmaninteriors.sslpowered.com/Images/DSCN2185.JPG

parasites?

9 replies

Posted by Litobrancha on Oct 20, 2006

Last reply on Oct 22, 2006 by GONZO

jason are those mites on the back at about the first or second abdominal segment? bright red little boogers.

at a glance looks like isoperla female. kinda hard to tell with the crippled wings.

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References

Baumann, Richard W. 1975. Revision of the Stonefly Family Nemouridae (plecoptera) : a Study Of The World Fauna At The Generic Level. Smithsonian Contributions to Zoology undef(211): 1-74.