Here's a TED talk with video of first 21 days of a bee's life, showing varroa:
http://www.ted.com/talks/anand_varma_a_thrilling_look_at_the_first_21_days_of_a_bee_s_life?utm_campaign=social&utm_medium=referral&utm_source=facebook.com&utm_content=talk&utm_term=science
Thanks for posting that.