Picture shows a bee on a flower, undated. The combination of honey bees and mason bees as pollinators yields a much bigger harvest than with only one species. (Julia Osterman, NewsX/Bee)
Picture shows the Varroa destructor (Varroa mite) an external parasitic mite that attacks and feeds on honey bees, undated. (USGS Bee Inventory and Monitoring Lab, NewsX/Bee)