The emerald ash borer (Agrilus planipennis) has decimated ash trees in North America since its arrival in the 1990s. In 2014, researchers discovered the beetle also infested white fringetree, though subsequent studies show the secondary host trees are more likely to survive than ash trees are when a wave of emerald ash borers passes through. (Photo via Flickr/USGS Bee Inventory and Monitoring Lab, public domain)