tomfly
The only thing left should be foot prints.
I found a good web page on Northern Caddis Flies. Any experienced fly fishermen can look at a Mayfly and have a good understanding of what species that it is. Most fly fishermen can not say the same when it pertains to caddis flies. I can identify maybe 5 total. Most of us classify them by color of their wings and body Black, Tan, Cream, Dun, Olive…. Here is a good collection of the caddis flies in the Limnephilidea classification.
Northern Caddisflies - Limnephilidae Photo Gallery by Tom Murray at pbase.com
Northern Caddisflies - Limnephilidae Photo Gallery by Tom Murray at pbase.com