The varroa bee mite jumps species, spreading around the world and killing millions of colonies.
The tropilaelaps mite also jumped species, but fortunately is mainly in Asia.
African killer bees began spreading, from Brazil to North America.
The small hive beetle from Africa, turned up in Florida and started devastating colonies. It has spread to other countries, including Australia.
The microsporidian stomach parasite Nosema cerane, jumped its host species and is now throughout much of the world.
A new virus, the Israeli Acute Paralysis virus, is found in China, Australia and in the United States where it is implicated in colony collapse disorder.