Emerald Ash Borer
Emerald Ash Borer
These shiny green beetles love to live inside ash trees! Unfortunately, they dig tunnels through the trunk which kills the tree.
All ash trees have leaves that are made up of individual “leaflets”. This photo shows one leaf with seven leaflets.
An ash twig in winter.
Ash trees have leaves that are opposite each other on the stem, a helpful way to identify an ash!
Green ash trees often have grooves in the bark, like the green ash in this photo.
Ash trees are often planted to provide shade on a hot summer day!
Beautiful fall colors of the green ash tree!
Tree trunk with many emerald ash borer tunnels under the bark.
Emerald ash borers' feeding causes the top of ash trees to lose their leaves, and leafy sprouts come out of the base of the tree.
“D”-shaped holes caused by emerald ash borers when they exit the tree.
Woodpeckers peck at the bark on ash trees to find emerald ash borers to eat, and leave behind light regions of flaking bark.
Close-up of an infested ash tree, showing the leafy shoots that develop near the base of the tree.
The downy woodpecker is a natural predator of emerald ash borer. It is a sign that borers might be nearby!
A wasp with emerald ash borer prey.
This wasp is a predator of emerald ash borer, so if you spot them nearby, there’s a good chance you might see emerald ash borers too!
Are you still curious about
the emerald ash borer?
Click the button below to find more information and connect with the experts.
Ash tree: Kelly Taylor, Flickr.; Emerald ash borer adults, larvae measurement, ash with green leaves: David Cappaert, Bugwood.org.; Emerald ash borer and nickel: Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org. ; Egg: Houping Liu, Michigan State University, Bugwood.org.; Larva: Pennsylvania Department of Conservation and Natural Resources - Forestry, Bugwood.org. ; Ash leaflets: Keith Kanoti, Maine Forest Service, Bugwood.org. ; Ash twigs: Rob Routledge, Sault College, Bugwood.org. ; Ash bark: Richard Webb, Bugwood.org. ; Ash with yellow leaves: Steven Katovich, Bugwood.org. ; Damaged tree trunk: Eric R. Day, Virginia Polytechnic Institute and State University, Bugwood.org. ; Crown dieback, exit holes: Daniel Herms, The Ohio State University, Bugwood.org. ; Branch damage: Jim Tresouthick, Village of Homewood, Bugwood.org. ; Leafy shoots: Edward Czerwinski, Ontario Ministry of Natural Resources, Bugwood.org. ; Woodpecker: "Downy woodpecker," Fox Fotos. Flickr.com.; Wasp, wasp nest: Philip Careless, University of Guelph, Insect Systematics Lab.