Adult beetles are 1/3rd in. long and 1/16th in. wide and have rounded abdomens, slightly flat backs, and are bright metallic green.
Larvae are creamy white and have flattened, segmented bodies up to an inch long. They can be found under ash tree bark in association with Zig Zag galleries.
Dieback of leaves that starts in the upper third of the tree
Vertical splits in the bark
S-shaped or hair-pin turn shaped channels, often filled by a sawdust like material (frass)
D shaped exit holes about an 1/8th of an inch long (about the length of George Washington’s nose on a US quarter)
Heavy woodpecker activity. They may strip the grey exterior bark off leaving light or “blond” areas on the trunk or branches
Water sprouts (epicormics shoots) at the bottom of the tree’s trunk
Ash trees are simple to identify once you learn their key traits. Ash trees have:
Branches and leaves that grow opposite of each other just like your arms and legs. If the branches are staggered or alternate, the tree is not an ash tree.
Leaves that are pinnately compound. Pinnately describes the feather-like shape of the leaves and compound means that each individual leaf is made up of several smaller leaflets.
Seeds that are long and shaped like a paddle.
Diamond-patterned bark, although this may not be apparent in young trees.