Identify EAB & Ash Trees

IDENTIFICATION

See image slide show below.

  • Adult emerald ash borers are 1/4 to 1/2 inches long, narrow and bullet shaped with a flat back.
  • Adults are metallic in color with purple/red metallic abdominal segments beneath their wing covers.
  • Larvae can get up to 3 cm in length and are a creamy white color with no legs.
  • Larvae body is made up of flattened, bell-shaped segments. 
  • Attacks all species of ash trees.

SIGNS AND SYMPTOMS

  • Adult beetles emerge in late May/early June
  • Bark splitting 
  • S-shaped tunnels behind outer bark
  • D-shaped exit holes 1/8" wide on bark surface
  • Woodpecker flecking
  • Dead top branches of ash trees
  • Leafy offshoots from the lower trunk of ash trees

NATIVE LOOK-ALIKES

Emerald ash borer can be confused with many native insects. Check out these native look-alikes

HOW TO IDENTIFY AN ASH TREEash tree leaves and seeds

In Vermont, we have three species of ash trees: green ash (Fraxinus pennsylvanica), black ash (Fraxinus nigra), and white ash (Fraxinus americana). Here are some helpful links for ash tree identification:

 

 

 

Photo Credits:

Kenneth R. Law, USDA APHIS PPQ, Bugwood.org

Kelly Oten, North Carolina Forest Service, Bugwood.org

Daniel Herms, The Ohio State University, Bugwood.org

Nathan Siegert, US Forest Service

 

 

 

  • Adult emerald ash borer
    Adult emerald ash borer
  • Adult emerald ash borer
    Adult emerald ash borer
  • Woodpecker flecking
    Woodpecker flecking
  • Woodpecker flecking
    Woodpecker flecking
  • Woodpecker flecking
    Woodpecker flecking
  • Woodpecker flecking
    Woodpecker flecking
  • Woodpecker flecking
    Woodpecker flecking
  • Woodpecker flecking
    Woodpecker flecking
  • Woodpecker flecking
    Woodpecker flecking
  • Bark splitting
    Bark splitting
  • Bark splitting
    Bark splitting
  • Larval galleries
    Larval galleries
  • S-shaped larval galleries
    S-shaped larval galleries
  • S-shaped larval galleries
    S-shaped larval galleries
  • Larve
    Larve
  • Larve
    Larve
  • D-shaped exit hole
    D-shaped exit hole