Sawflies seem to be in abundance this summer on a lot of plants including hibiscus, roses, and jewelweed, among others. The larvae of sawflies are often confused with caterpillars. Sawflies are the larvae of young of wasps (Hymenoptera), whereas caterpillars become moths or butterflies (Lepidoptera). A key difference is that sawflies have more than five pairs of prolegs. Caterpillars never have more than five. Sawflies feed together and often curl up when disturbed.