Psycho Stonefly with Chartreuse Krystal Flash Collar now available! New ReelFlies Signature Fly Pattern - Is a realistic supercharged nymph, incredible for Rainbow and Steelhead fishing. It is just a deadly combination with the added attraction of a bright chartreuse collar. The Psycho Stonefly Chartreuse is a Signature ReelFlies tied on a high end Japanese Maruto curved shank hook locally tied in Canada by one of our top tier fly designers. This is a limited stock item, so get some today.