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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.

Case view of a Pycnopsyche guttifera (Limnephilidae) (Great Autumn Brown Sedge) Caddisfly Larva from the Yakima River in Washington
It's only barely visible in one of my pictures, but I confirmed under the microscope that this one has a prosternal horn and the antennae are mid-way between the eyes and front of the head capsule.

I'm calling this one Pycnopsyche, but it's a bit perplexing. It seems to key definitively to at least Couplet 8 of the Key to Genera of Limnephilidae Larvae. That narrows it down to three genera, and the case seems wrong for the other two. The case looks right for Pycnopsyche, and it fits one of the key characteristics: "Abdominal sternum II without chloride epithelium and abdominal segment IX with only single seta on each side of dorsal sclerite." However, the characteristic "metanotal sa1 sclerites not fused, although often contiguous" does not seem to fit well. Those sclerites sure look fused to me, although I can make out a thin groove in the touching halves in the anterior half under the microscope. Perhaps this is a regional variation.

The only species of Pycnopsyche documented in Washington state is Pycnopsyche guttifera, and the colors and markings around the head of this specimen seem to match very well a specimen of that species from Massachusetts on Bugguide. So I am placing it in that species for now.

Whatever species this is, I photographed another specimen of seemingly the same species from the same spot a couple months later.
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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Jmd123 has attached these 17 pictures. The message is below.
Oh yeah, gotta have some hellgies!  Corydalus sp.
Can't get away from midges!  A mixed bag of Chironomidae, some to be identified to genus?
Riffle beetles too!  Macronychus adult
Larvae too, Neoelmis sp., a nice shot showing the closed front coxal cavities
Not many stoneflies turned up in our samples but here's a nice big Acroneuria for ya!
Too big to see the whole thing at once!  Dragonhunter nymph, Hagenius brevistylus, listed rare in Indiana!
The only crayfish species we collected were of the phallic crayfish, Orconectes putnami.  Here you can see the male parts that gave it the name!
Not easy to see but these are snail-cased caddisflies, at least their cases (we did find animals in some of them) - Helicopsyche, this might be the first time I've seen these!
Hard to see but this one has a critter in it!
How they all ended up!
How they ended up that way...yours truly refamiliarizing himself with aquatic entomology! (Ah, like riding a bicycle!)
Unsorted, yet
Good thing this books has lots of drawings!!! (Merritt, Cummins, & Berg, 4th edition)
Another habitat shot...the lowest section of this stream was classic riffle/pool complexes & had the highest invertebrate diversity
Side channel - high habitat diversity in a small stream & it showed in the biota
Finally...been a looooong day in the field, holding my damp socks, and yes, I need some dental work
Jmd123's profile picture
Oscoda, MI

Posts: 2474
Jmd123 on Mar 2, 2021March 2nd, 2021, 5:38 am EST
Got a few more to show. Remember, this is all to be repeated this May! I got my work cut out for me this field season... ;oD

No matter how big the one you just caught is, there's always a bigger one out there somewhere...
Martinlf's profile picture
Palmyra PA

Posts: 3047
Martinlf on Mar 2, 2021March 2nd, 2021, 12:08 pm EST
Cool. Looks like you've been busy!
"He spread them a yard and a half. 'And every one that got away is this big.'"

--Fred Chappell
Partsman's profile picture
bancroft michigan

Posts: 321
Partsman on Mar 3, 2021March 3rd, 2021, 10:31 am EST
Cool pics, good to hear from you.

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