EAB Identification and Reporting

Use the Emerald Ash Borer Identification Poster or the information below to determine if you have identified EAB or EAB tree damage.


Insect Sighting


Emerald Ash Borer

Emerald Ash Borer is commonly mistaken for:

Six Spotted Tiger Beetle


Japanese Beetle

Six Spotted Tiger Beetle Two Lined Chestnut Borer Japanese Beetle

If the insect sighting was not Emerald Ash Borer, there is no need to file a report. Find additional information about Colorado insects from the CSU extension


Ash Tree Damage

Reporting suspicious ash tree damage? Look for these signs:

Tiny, D-Shaped exit hole

Serpentine larval tunnels under the bark

Upper 1/3 die-back of tree followed by shrubby resprouting underneath

Tiny, D-shaped exit hole Serpentine larval tunnels Upper 1/3 die-back and resprouting


Emerald Ash Borer (EAB) Report Form