They bite now?
It was probably an Asian beetle
"
Are ladybugs and Asian beetles the same? No! The ladybug looking bug you’re thinking about is probably the Asian lady beetle. And although ladybugs and Asian lady beetles look similar and belong to the same
insect family, they do
not behave similarly.
Ladybugs are considered highly beneficial, harmless insects. They don’t bite, they consume several harmful garden pests such as aphids, and they never congregate in large numbers. Most importantly,
when it gets cold they seek shelter outdoors.
Asian lady beetles are considered a true pest. Unlike ladybugs, Asian lady beetles will gather in large groups, especially around warm, reflective surfaces like windows. Asian lady beetles “bite” by
scraping the skin they land on, and leave a yellow, foul-smelling liquid on surfaces where they gather.
Worst of all, Asian lady beetles will attempt to enter your home when they look for overwintering shelters."