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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Neoleptophlebia Mayfly Nymph Neoleptophlebia Mayfly Nymph

Dorsal view of a Neoleptophlebia (Leptophlebiidae) Mayfly Nymph from the Yakima River in Washington

Some characteristics from the microscope images for the tentative species id: The postero-lateral projections are found only on segment 9, not segment 8. Based on the key in Jacobus et al. (2014), it appears to key to Neoleptophlebia adoptiva or Neoleptophlebia heteronea, same as this specimen with pretty different abdominal markings. However, distinguishing between those calls for comparing the lengths of the second and third segment of the labial palp, and this one (like the other one) only seems to have two segments. So I'm stuck on them both. It's likely that the fact that they're immature nymphs stymies identification in some important way.

10 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.

i have qustoins

Gomphidae Dragonfly Nymph

3 Pictures

Collected January 12, 2004 from the Namekagon River in Wisconsin

Added by Troutnut on January 25, 2006

Collected January 12, 2004 from the Namekagon River in Wisconsin and added by Troutnut on January 25, 2006

Davisbugg
Posts: 1

Davisbugg on Mar 24, 2007March 24th, 2007, 11:03 am EDT

my daughter and i found one of these in the river. she is very cerious can you tellme what they eat or if it will turn into some other bugplease tell me wat we need to do.
thanks,

davisbugg

Martinlf

Moderator
Palmyra PA

Posts: 3047

Martinlf on Mar 25, 2007March 25th, 2007, 4:11 am EDT

The entomologists here will know more about what it eats, but I believe dragonfly nymphs are carnivorous, and eat other water creatures. To see what it will turn into, use the Google search function at http://www.google.com and search dragonfly insect. I believe you will get pictures of the adult.

"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell

Martinlf

Moderator
Palmyra PA

Posts: 3047

Martinlf on Mar 26, 2007March 26th, 2007, 8:02 am EDT

Thanks, David. I did the "clubtail" search and learned a bit more about these bugs.

"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell