A fly that appears like a wasp without a midsection. Sawfly wasp larvae are plant eaters. Most resemble caterpillars in general appearance and also in damage. Many sawflies are plant pests that cause noticeable-to-destructive loss of plant foliage.
Sawflies often feed in groups and can quickly defoliate portions of their host plant. Sawflies are host-plant specific, meaning each different species of sawfly feeds on a specific host plant and does not move from one plant type to another.
Sawflies are related to wasps and bees. Their name comes from the saw-like ovipositor (egg-laying structure) of adult females. Adult sawflies are small, stout-bodied, non-stinging wasp-like insects, but they often go unnoticed. Treat sawfly larvae when they are young and half their full-grown size or less. If larvae are fully grown, the damage is done and treatment is not effective.