This new 477 yarn has been specially developed to replicate as close as possible to the classic Sawyer Bug tying wool yarn.
Sawyer developed the Killer Bug as a means of controlling grayling numbers on the River Avon where at the time it was considered vermin. The Killer Bug is designed to imitate the freshwater shrimp but also looks similar to a hatching sedge. The Killer Bug was named by Sawyer’s friend Lee Wulff. It is tied with large amounts of copper wire and light beige wool. Originally the Killer Bug was tied with a wool called Chadwick’s 477. When production of this wool ceased in 1965 Sawyer switched to a specially produced copy. In fly fishing circles the original Chadwick’s 477 wool is considered to have mythical fish-catching properties.