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EAB for Homeowners
Identification & Biology
Ash Identification Presentation
EAB Look-Alikes
EAB Locations
EAB Management
Protecting Ash Trees with Insecticides
Quarantine Information
Information for Industries and Organizations
Self Study Programs
Arrest that Pest and Other Educator Resources
Report a Suspected Infestation
EAB on YouTube
Emerald Ash Borer Life Cycle
  • Adult borers emerge from the tree through D-shaped exit holes from late April throughout the summer.
  • Adults live about 20 days. They feed lightly on ash leaves, but not enough to cause real damage.
  • Adults are bright metallic green with rounded bellies and flat backs.
  • Their peculiar shape accounts for the distinctive D-shaped exit holes from which they emerge from trees.
  • Adult beetles are about 1/3 to 1/2 inches in length and about 1/16th of an inch wide.
Adult EAB emerges

An EAB adult emerges
through a D-shaped hole
in the tree's bark.

(J. Zablotny, USDA APHIS)

First EAB found in Indiana

The first adult EAB that was found in Indiana.
(Steuben County, May 2004)

(J. Ellis, Purdue University)

EAB adult feeding

An adult EAB nibbles on
an ash leaf.

(J. Ellis, Purdue University)


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