Here it is Mike
Thanks for posting the photo, that was a good idea and it is a nice fly!
Tricky question this one though
Did you actually see any trout feeding on live blue adult damsels on the day?
Although we see blue adult damsels flying around at our fisheries in large numbers at times, I don't think I have ever seen trout take any real interest in them on the surface of the water. Yes, it is a strange fly that one and I have often heard folk say that "they are tied and sold to fool the angler, not the fish"? I wonder if there is any truth in that saying.
Best wishes
Mike