I think you mean Asian beetles here in Wisconsin come late September they are a huge pest and the entire winter you can here them rattling in between your blinds and windows. Not to mention what they do to crops.
No, I did research on this and was very surprised. I am in NW Washington State and my sister also had the same problem. She thought it was from the plants outside her windows.
These are definitely ladybugs and they are on the ceiling, on every lamp, like that. They may also be in the shutters but I see them wandering everywhere.
Florida is the bug capital of the world. Just when you think you have seen all the bugs here, you see a new one. The lovebugs are floating copulating swarms of black bugs which get smashed into the windshields of your car every year. Then there are the grasshoppers which are ten times bigger than the ones up north. The roaches are huge and the spiders which build the basketball nets to catch them are gigantic. We have yellow flies twice a year, fire ants, stink bugs, and remember all those bees which are disappearing supposedly? Well, people find them by the thousands in bee hives down here. So many it hits the evening news.