I’ve been tying flies for many years now, but I have a question that might seem peculiar. What is a brownstone nymph? Is it a brown stonefly nymph? A nymph of a bug I’m not aware of? I’ve seen it spelled different ways and I’ve always wondered. Is there a nymph pattern of such a fly?
Very common in PA…
[http://www.westfly.com/ento/stones/winterb.htm](http://www.westfly.com/ento/stones/winterb.htm)