Varroa destructor (Varroa mite) is an external parasitic mite that attacks and feeds on the honey beesApis cerana and Apis mellifera. The disease caused by the mites is called varroosis

13 Mistakes New Beekeepers Make
Beekeepers at all levels of experience make mistakes. As a newbie though you’ll probably be more prone to some of them. Here’s a list to help you avoid some of them (including our own foul-ups).
Varroa Mites: A Complete Treatment Guide
The aptly named Varroa destructor mite is virtually unavoidable. Learn how to monitor and manage it to minimize its impact and maintain healthy, surviving colonies.
Comparing Varroa Mite Treatments (What Beekeepers Use)
Comparing varroa mite treatments among beekeepers we polled, the most popular and effective treatment against varroa mites is oxalic acid. Another organic substance, formic acid (sold as Mite Away Quick Strips® or Formic Pro®) and Apivar®, a synthetic miticide, were 2nd and 3rd, respectively.
What Honey Bees To Buy
(A Simple Answer)
When buying bees you will most likely come across certain subspecies. Each of these has traits and characteristics that are either advantages or drawbacks.