Emerald Ash Borer (EAB), Agrilus planipennis Fairmaire
This Asian beetle, discovered in 2002 in southeastern Michigan and Windsor, Ont., infests and kills North American ash species (Fraxinus sp.) including green, white, black and blue ash. Damage is caused by the larvae, which feed in tunnels (called galleries) in the phloem just below the bark. The serpentine galleries disrupt water and nutrient transport, causing branches, and eventually the entire tree, to die. Adult beetles leave distinctive D-shaped exit holes in the outer bark of branches and the trunk. Adults are roughly 3/8 to 5/8 inch long with metallic green wing covers and a coppery red or purple abdomen. They may be present from late May through early September but are most common in June and July.
(Information cited from EmeraldAshBorer.info)
Watch the video - Emerald Ash Borer - "The Green Menace"
Helpful links about the Emerald Ash Borer
- March of the Emerald Ash Borer Takes Carmel Trees by Storm
- Emerald Ash Borer
- Michigan Multi-Agency Emerald Ash Borer Website
- USDA Forest Service