Agrilus planipennis

Emerald Ash Borer

Agrilus planipennis, Emerald Ash Borer photo from Indiana

Family: Buprestidae

Subfamily: Agrilinae

Length: 8 - 14 mm


The Emerald Ash Borer is a species accidentally imported into North America from Asia.  The flight period for adults is mid-May through September; in other months the species persists as eggs, larvae, or pupae.  The larvae feed under the bark of ash trees. 

Here are some signs of Emerald Ash Borer presence in ash trees:



Emerald Ash Borer, dorsal view, Agrilus planipennis


On average, the trees die three to five years after the beetles take up residence there. Chemical treatments may prove effective in some cases, but require a long-term commitment, since the threat of infestation will recur every year.

Photo data: 24 June 2012. Beside Waldron Lake, Noble County, Indiana.