As I held the fly in my hand, I could see that it was probably an early attempt at some sort of terrestrial pattern, possibly a cricket,  by the fly tier who donated the materials.  The fly was crudely tied with heavy sewing thread.  It had a preformed foam spider body and knotted rubber legs tied in all helter-skelter.  The knotted legs are what makes me believe it was meant to imitate a cricket.