Hello. I live in western mass. When I was walking on a mown path through my hay field I saw a strange sight. A large (about 3/4"long) looked to be riding on the back of a wooly bear caterpillar. The latter was clearly trying to evade the former, to no avail. If the beetle came off, on it climbed again! This went on and on until I walked on. I can find no information about what I was witnessing. Is this caterpillar prey to the beetle?
Thank you for your help!