This is a very old pattern ( prior to 1940) from the Rev. Edward Powell. The 'buzz' means that is a hackled pattern and this is typical of the style of Powell's patterns for fishing the Border streams like the Corve and the Onny - heavily hackled (my dressing is not as heavily hackled as Powell's originals, neither are the hackle fibres as long!), also with 'robust' dubbed fur bodies. His dry flies are remarkably different from those spawned on the chalkstreams of Hampshire and reflect the need for flies that would remain afloat on the more turbulent Wales / England border streams.