An egg mass of the spotted lanternfly may appear harmless, but the Invasive Species Centre is cautioning about its significant threat to the wine and fruit-farming industries in the Windsor-Essex region.
Described as resembling a small smudge of mud, the egg mass can be found on various outdoor surfaces, as highlighted by Emily Posteraro, a program coordinator at the centre, during educational workshops at Windsor’s Ojibway Nature Centre.
Over the past two years, only ten sightings of spotted lanternflies have been reported in southwestern Ontario, including one discovered and documented by local resident Catherine Archer in late September 2024 in South Windsor. In contrast, these insects have been rapidly spreading across the eastern United States since 2014.
Experts from the Invasive Species Centre have been issuing warnings that if the spotted lanternfly migrates northward, it could severely impact Canada’s vineyards, orchards, flower nurseries, and forestry.
The spotted lanternfly’s “generalist” feeding behavior, thriving on over 100 plant species ranging from vine crops to hardwood trees, is a major concern. Additionally, its indiscriminate egg-laying habits pose a significant challenge, with eggs being laid on practically any stationary object.
Despite the current season marking the end of the adult lanternflies’ breeding cycle, egg masses have been laid and are set to hatch in the coming spring.
Given the high volume of international traffic and cargo passing through border regions like Windsor-Essex, vigilance is crucial. Posteraro advised individuals to inspect their vehicles and outdoor equipment, such as firewood and concrete slabs, especially after visiting areas with known infestations in the U.S.
The spotted lanternfly, originally from China and parts of Vietnam, is believed to have been inadvertently introduced to North America through global trade. Its adaptability has enabled it to outcompete other insect species on this continent.
Residents like Jean Dumouchelle, attending workshops out of concern for local ecology, emphasize the need for human intervention to restore balance in the ecosystem disrupted by human activities.
To aid in the early detection and response efforts, individuals are encouraged to report any spotted lanternfly sightings to the Canadian Food Inspection Agency, regardless of whether the specimen is alive or dead.
City of Windsor is also addressing the spread of invasive species by applying herbicide this winter to control non-native plants like honeysuckles, European buckthorn, autumn olive shrubs, and the tree-of-heaven. The herbicide application will target stumps and vines, with no closures of parks or paths expected during the program, but park users are advised to stick to designated trails and keep pets leashed. The herbicide applications are scheduled to continue until March 15.
