sooby said:The markings vary a bit but yours looks pretty close to this example and the size seems right:
Since it is apparently a fungus feeder then I guess we need to consider that your apple trees have something growing on them that is attracting the beetles, maybe powdery mildew. It seems unlikely that the beetles are doing any harm anyway.
sooby said:It doesn't look quite like I would expect for powdery mildew, check out these pictures of powdery mildew on apple from Google:
Honeycrisp is supposed to be susceptible to powdery mildew but Fuji is not from a couple of references I checked. The leaves are rather curled in your first picture though. If you don't see anything like the pictures of powdery mildew and you only have one leaf with a whitish end, maybe we need to look for something else. I wouldn't worry too much about the trees, they can have all sorts of problems that are resolvable or non-fatal.