Non-native multi-coloured Asian lady beetles are invading homes across the province looking for a place to spend the winter. The insect is not native to Canada, but established itself in New Brunswick in abundant numbers about 10 years ago. We usually see a few ladybugs around our house, but not like we saw yesterday. He said because the bugs aren't at risk from predators, they swarm out in the open in the fall.
The biting, stinking Asian lady beetle invades homes across the province
How to get rid of Asian lady beetles | CAA-Quebec
The Asian lady beetle is an invasive species and is even a threat to its more benign indigenous ladybug cousin. Asian lady beetles were brought into the United States in large numbers in the s to protect orchards from destructive insects, aphids in particular. They then headed north, reaching Canada. Asian lady beetles are now found on both shores of the St. The Asian lady beetle Harmonia axyridis Pallas is recognizable by the two white markings near its head and, just behind its head, an M-shaped marking. The rest of its look varies: this insect may be yellow, orange, red or black. It may have up to 20 spots or none at all!
10 Neat Things: Asian Ladybugs
Larger than most other lady beetles, these pests can grow up to 8mm long. Other characteristics include:. Finding large numbers of these pests grouped together is the most common sign of infestation.
There are reports of swarms of the multicoloured Asian ladybug, an insect known to bite, in Ottawa's southern limits and making their way into more urban areas. Carleton University entomologist Jeff Dawson said in the fall the ladybug looks for places with stable temperatures to survive the winter. Often, they sneak into cracks and open holes in people's homes. The insects also do not face much threat in their natural habitats.