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Artistic view of a Male Pteronarcys californica (Pteronarcyidae) (Giant Salmonfly) Stonefly Adult from the Gallatin River in Montana
Pteronarcys californica

The giant Salmonflies of the Western mountains are legendary for their proclivity to elicit consistent dry-fly action and ferocious strikes.

Dorsal view of a Grammotaulius betteni (Limnephilidae) (Northern Caddisfly) Caddisfly Larva from the Yakima River in Washington
This is a striking caddis larva with an interesting color pattern on the head. Here are some characteristics I was able to see under the microscope, but could not easily expose for a picture:
- The prosternal horn is present.
- The mandible is clearly toothed, not formed into a uniform scraper blade.
- The seems to be only 2 major setae on the ventral edge of the hind femur.
- Chloride epithelia seem to be absent from the dorsal side of any abdominal segments.
Based on these characteristics and the ones more easily visible from the pictures, this seems to be Grammotaulius. The key's description of the case is spot-on: "Case cylindrical, made of longitudinally arranged sedge or similar leaves," as is the description of the markings on the head, "Dorsum of head light brownish yellow with numerous discrete, small, dark spots." The spot pattern on the head is a very good match to figure 19.312 of Merritt R.W., Cummins, K.W., and Berg, M.B. (2019). The species ID is based on Grammotaulius betteni being the only species of this genus known in Washington state.
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.

Al514's profile picture
Central New York

Posts: 142
Al514 on Jun 14, 2008June 14th, 2008, 5:52 am EDT
I went down to the Delaware for the first time yesterday and I am concerned about not carrying Didymo to streams in my hometown. What are some effective ways of cleaning your waders/boots?
Al514's profile picture
Central New York

Posts: 142
Al514 on Jun 14, 2008June 14th, 2008, 6:04 am EDT
Nevermind, I just googled how to do it - freezing everything seems like the easiest way.
Site Editor
"Bear Swamp," PA

Posts: 1681
GONZO on Jun 14, 2008June 14th, 2008, 6:37 am EDT

I applaud your concern. For those who don't find freezing convenient, I believe the EPA suggests soaking in a 2% solution of bleach or a 5% solution of either dishwashing detergent or salt for at least a minute. At the very least, thorough drying (an additional 48 hours after the material feels dry) is suggested.
Martinlf's profile picture
Palmyra PA

Posts: 3047
Martinlf on Jun 16, 2008June 16th, 2008, 9:42 am EDT
Good for you Artie. I notice that some of the new boots by Simms and others are designed to be easier to clean in order to help stop the spread of invasives. Thanks for this post; it will help keep solutions on the radar for us.
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell

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