Elm Zigzag Sawfly in Eastern Ontario

Elm Zigzag Sawfly in Eastern Ontario is a presentation by Owen Clarkin to the Ottawa Field Naturalists’ Club (OFNC) at their meeting on 11 January 2022. The presentation describes how the first detection of Elm Zigzag Sawfly in Canada in 2020 near Montreal led to efforts by OFNC citizen scientists to track its spread across eastern Ontario during the summer and fall of 2021.

Click on the image below to view the presentation.

Elm Zigzag Sawfly (Aproceros leucopodo) in eastern Ontario by Owen Clarkin to the Ottawa Field Naturalists' Club on 11 January 2022.