Every Fly You Need to Cover Every Important Stonefly

I organize my fly boxes based of the insect species I frequently encounter in the field. Over the years, I have been able to consolidate the number of patterns that I need to carry with me in order to match ALL the hatches I encounter. In truth, I only need to carry a dozen to a dozen and a half patterns to match all the stoneflies including caddis and mayflies everywhere I go. 

I recently updated my stonefly nymph box and made a small chart to ensure that I had the patterns I needed to match all the stoneflies. We may not think to use Czech Nymphs to imitate stoneflies or simple little micro glint jigs, but both can also be useful stonefly imitations. We need only to match the general size shape and color of the natural for success and to have a fly in your box that serves that function.