EMERALD ASH BORERAgrilus planipennis
Some Facts Originally from Asia
First US detection was in 2002
Effects all major North American Ash Species
Core infestation is concentrated in SE Michigan
Approx 20 mm long and 4 mm wide
EAB Larvae
Spread Have a presence in 14 states and parts of
southern Canada
Ash is a popular type of firewood
Thought to be spread by transfer of firewood
Distribution of Ash
EAB Infestation
Mechanism of attack Adults lay eggs in crevices of bark
Larvae burrow into bark
Larvae consume cambium and phloem, tree is girdled.
Detection Canopy dieback
Discolored leaves
Bark Splitting
D-shaped exit wounds
Bark Splitting
Canopy dieback
D-shaped exit wound
Effects on us Ash wood is tough, strong, and
elastic.
Used in manufacture of furniture
8 billion ash trees valued at $280 billion
Control and Eradication Quarantine zones
Release of wasps
Various insecticides