Pheromone trap monitoring reveals the continued absence of swede midge in the Northern Great Plains

Abstract The swede midge, Contarinia nasturtii (Kieffer) (Diptera: Cecidomyiidae), is invasive to North America, where it was first reported in Ontario, Canada. It now established eastern Canada and from Minnesota the Midwest northeastern seaboard of United States America. Swede midge a serious pest brassicaceous plants, including vegetable oilseed crops. To ensure its early detection Northern Great Plains, monitoring programme using pheromone traps located primarily along edges canola fields Dakota, northwest Peace River region, Alberta British Columbia, In 117 trap sites were monitored between 2015 2021. western Canada, occurred on small scale 2006 2011, 521 2013 not detected grown Plains Partners Dakota intend maintain support if does continue disperse northwestwards. contributes outreach activities fosters farmer agronomist participation management ( i.e. , community science) Plains.