Elm zigzag sawfly (Aproceros leucopoda): Exploring current range, potential impacts, and establishing treatments for our urban landscape

The Elm Zigzag sawfly (Aproceros leucopoda) poses a significant threat to elm trees (Ulmus spp.) in the United States, necessitating urgent attention. The Elm Zigzag sawfly has already been recognized as an invasive species in many parts of Europe. First detected in Sainte-Martine Quebec in 2020, the Elm Zigzag sawfly has rapidly spread, establishing itself in many regions in the eastern united states. The Elm Zigzag Sawfly is a pest of various elm species and causes severe defoliation, resulting in damage to elm foliage and tree health. In this presentation, we will highlight the long-term consequences for affected ecosystems and the decline of urban and forested landscapes. Pathways and mechanisms of introduction will be discussed, shedding light on the facilitating factors for successful establishment and subsequent range expansion. The current range of the Elm Zigzag sawfly will be assessed, encompassing its geographical distribution and affected areas. Addressing the need for effective management strategies, the presentation explores potential treatments to mitigate the spread and impacts of the Elm Zigzag sawfly. Chemical, biological, and cultural control methods will be explored, considering feasibility and efficacy. This presentation provides a comprehensive understanding of the introduction, current range, impacts, and potential treatments associated with the Elm Zigzag sawfly in the USA.