The emerald ash borer (EAB) is a deceptively beautiful insect. As the first part of the name implies, the one-centimetre long beetles are an iridescent, metallic green. They have large, dark eyes and some might even call them cute.
But as the second part of its name implies, they are also a prolific pest in North America, where they have killed tens of millions of ash trees.
The insect has recently been found for the first time in Vancouver, seemingly having jumped two provinces to get there from Manitoba — previously the farthest west they had been seen in Canada.
