Sawflies are considered “primitive” wasps. The adults, which eat little or nothing, are typically seen in late spring or early summer. In general, sawflies overwinter as larvae, in cocoons they make on pine needles, under bark, in stems, on twigs or on the ground. They pupate as the weather warms, chew their way out of their pupal case, and emerge in spring to mate and lay eggs. The larvae resemble caterpillars, and eat a wide variety of plants, but most species limit themselves to just a few food sources.