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.

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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.

Heptagenia?

Leucrocuta hebe (Little Yellow Quill) Mayfly Nymph

4 Pictures

Dorsal view of a Leucrocuta hebe (Heptageniidae) (Little Yellow Quill) Mayfly Nymph from the Bois Brule River in Wisconsin

Collected June 8, 2005 from the Bois Brule River in Wisconsin

Added by Troutnut on May 26, 2006

Collected June 8, 2005 from the Bois Brule River in Wisconsin and added by Troutnut on May 26, 2006

GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681

GONZO on Jul 19, 2011July 19th, 2011, 4:10 am EDT

This looks more like a Leucrocuta nymph to me (possibly L. hebe?).

Troutnut

Administrator
Bellevue, WA

Posts: 2758

Troutnut on Jul 19, 2011July 19th, 2011, 9:37 am EDT

Thanks, you're right on the genus for sure. There's no fibrilliform portion on gill 7, and the tails only have spines at the segments. I'd guess you're right on the species too but I don't know.

Jason Neuswanger, Ph.D.
Troutnut and salmonid ecologist

GONZO
Site Editor
"Bear Swamp," PA

Posts: 1681

GONZO on Jul 19, 2011July 19th, 2011, 4:24 pm EDT

It's difficult to be certain of the species, Jason. If reliable keys to the nymphs exist, I haven't seen them, and McCafferty (2004) says that some of the species are "questionably valid."

SalmonfliesPteronarcys californica

Troutnut Forum › Specimen Discussion › Heptagenia?