Emerald Ash Borer
Cliff Sadof, Extension Ornamental Entomology
Specialist, Purdue University
Emerald Ash borer has now been detected in Stueben
County. The current infestation is believed to have resulted
from the movement of firewood from the generally infested area.
These photos, taken at the Indiana EAB site show that the EAB
can infest very small trees. The sunken area of bark was the
only symptom visible on this newly planted tree. Peeling back
the bark revealed the gallery of a EAB that was destined to
emerge this summer. It is very important to inspect ALL recently
planted trees for early symptoms of EAB. Not all trees show
obvious symptoms. The third photo of larval galleries was taken
from an apparently healthy tree showing no symptoms.
For more information on emerald ash borer: