The three common sawflies are roseslug, hibiscus, and dogwood. The larvae feed on Knock Out roses, rose mallow, Hibiscus moscheutos and hybrids of H. palustris, H. militaris, and H. lasiocarpus. The larvae causes a window pane effect on host plants and will consume most of the leaves on the host plant as it ages.
Adult sawflies appear to be a small wide-waisted wasps.
Hand removal is good when the population is small. There are a number of predatory insects that help keep their populations lower. Chemical control options include horticultural oil, insecticidal soap and acephate.