I plan to do a lot of exploring this winter: new streams, new waters, and I hope some new insects. That means getting into small streams higher up in the mountains. This morning I tried a small stream that empties into the Doyles even though it wasn't all that remote.
Sort of struck out. Oh, I found plenty of insects: large winter stoneflies (Taeniopteryx), some common stones (A. abnormis), some flatheads, one small minnow mayfly, and lots of Uenoids (all were the "tolerant" N. oligius). The stream was in the woods at the top of a hill. Still, there was a farm up above it, and the rocks -- and the insects as well -- were covered with silt. Ugh!
One thing of interest: this little larva (10 mm), one I've not seen before. From my live photos, it's easy to see the prolegs on the venter, but I needed a microscope photo to see if they were paired, and how many there were.
Five pairs on segments 3-7.
Paired prolegs (pseudopods) with sclerotized apical crochets (curved hooks) on venter of abdominal segments 3-7; larvae in wet to saturated soil along streams..... most Dicranota
As I recall, this one was in a pretty muddied up leaf pack. However, if you look at some of the internet sources, you'll find that it's a fairly intolerant insect. Tom Murray has posted a photo of one that was "netted from a fast flowing rocky mountain stream" (http://bugguide.net/node/view/264471/bgpage), and the North Carolina list of tolerance values gives a TV of 0.0 to Dicranota spp. Maybe I need to see if I can get into this stream upstream from that farm!