I decided to pull out some sunflowers in my garden that were starting to look particularly bad. The leaves were turning yellow or developing yellow spots and just generally not looking very good. While I was cutting them down and bagging the plants I noticed some small bugs on the leaves that I hadn't seen before. At first I thought they were crumbs or some kind of plant debris but then I started noticed them bouncing up and down sort of like a needle on a sewing machine.