Hi, I'm a little east in chesterfield. I have seen a couple of these. There are actually quite a few species of ladybugs. I believe these are one of them. While I haven't found any exact picture ids. I didn't see any damage at all from the bugs so I let them be. They were hanging out in an area close to an aphid problem area, this was another reason I thought they may be ladybugs. Just my two cents.
USDA Zone 7a, Sunset Zone 32.
Failure is only a fact when you give up.