Great photo! We keep bees here in the western U.S. and your catch appears to be the Varroa destructor mite. Once diagnosed it's rather easy to control and eliminate. However, it's been around since the mid-1990's when it came to the U.S. (Europe and the U.K. previously) from the Asian honeybee. It's but one of about 4 mites that infect hives.
It is certainly, in my opinion, one of the contributors to the Colony Collapse Disorder (or syndrome). There are others, but many of us have suspected the limited DNA variation that has developed over the last century to be ne of the major causes.. Once was, bees came from many different sources but now, 90% of the queens (worldwide) are sisters and like turkey breeders experienced earlier, the resistance to diseases and mite infestations has been greatly reduced...
Thanks for the picture...