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Lady bug look-alikes

We've been told these are some kind of Japanese beetles. They were everywhere (indoors and outdoors) last summer and continue to thrive and apparently reproduce indoors all winter long. Are these insects harmful or helpful? If harmful, what's the best way to get rid of them?

Wildlife Expert - David Herlocker

If they look like Ladybugs, they probably are some sort of Ladybugs. There are several related species that aggregate in huge numbers during the winter. In spring, they become active, mate and disperse to lay eggs. Japanese beetles are a very different looking species (see picture below), which do not spend the winter as adults.

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