Sawflies are a unique group of wasp-like herbivorous insects, many of which are economic pests in North America. They have a variety of plant-feeding behaviors; they feed on leaves both externally and as leaf-miners and bore into stems of grasses, shrubs, and trees. Sawfly GenUS is an interactive identification tool for all sawfly genera found in the United States and Canada. This tool is intended to help recognize exotic sawfly introductions and provide access to general information on affected plants, range, and diversity of these insects. This tool should be useful for port identifiers and screeners, provincial and state departments of agriculture, university extension professionals, and any non-expert with an interest in sawflies!