Zug Bug Classic old standby... this pattern is a great caddis nymph! Available in sizes: # 08 - # 20. The Zug Bug nymph pattern was initially designed as a caddis fly imitation. It&&';;s peacock herl body is a great attractor color and tail is unique to this fly pattern. Larger sizes also imitate Salmon/Stonefly nymphs as well. Fish this as a dropper!