No, though they look similar. Asian lady beetles are the ones that swarm houses in fall, overwinter in your walls, can pinch skin, and stain when crushed.
At a short distance, it’s very hard to tell ladybugs and Asian lady beetles apart. But if you find a bunch of bugs that look like ladybugs swarming your house in the fall, or if you find yourself being “bitten,” then you’re dealing with the latter.
If you need to tell them apart in the field, you can tell by looking at the heads. Asian lady beetles carry a distinctive black "M" (or "W," depending on your angle) on the whitish plate behind the head, the pronotum. Color varies from pale tan to orange to red, and they can have anywhere from zero to about twenty spots.
In practice, the difference that really matters comes around October. Asian lady beetles may mass on the sunny side of your home and then work into gaps around window trim. Then during the first warm snap of deep winter, often around January, you will find them around light fixtures and windows. This is a problem partly because no one enjoys having bugs in the home and partly because if you crush or startle them, they release a staining yellow fluid. If you have a heavy indoor population, it might even aggravate allergies.
Outside, Asian lady beetles are helpful in gardens and broader ecosystems. You just want them to stay outside. To do this, you can seal the gaps that allow them inside like cracks in trim and siding. It also helps to replace missing or worn vent screens before fall flights begin.
If you are tired of dealing with Asian lady beetles in your home, Mosquito Squad of Grand Rapids can help. Mosquito Squad's home and yard coverage treats the perimeter and entry routes, helping protect the indoors from their intrusion.
