Emerald Ash Borer Identification

Tagged as: Emerald Ash Borer, beetles, EAB, larvae

Adults are bright metallic green beetles that are approximately 1/3 inch long and 1/16 inch wide. They have flat backs and rounded abdomens. They are present from mid-May through late July. Larvae reach a length of approximately 1 inch and are creamy white, flattened, and segmented.

Emerald ash borer adult emeraldashborerinfo.org	Emerald ash borer larval stages emeraldashborerinfo.org

EAB adult beetles emerge from infested trees beginning in mid-May, peaking in late June, and continue emerging until late July. Beetles feed on ash foliage causing irregularly shaped patches along leaf margins and minor feeding damage. Females lay approximately 75 eggs on the bark of branches and trunks from late-May through July with hatch occurring in about one week. Larvae tunnel into the cambium area between the inner bark and outer ring of wood, feed on phloem and outer sapwood, and produce galleries (tunnels) that disrupt the flow of water and nutrients within the tree. Feeding is completed in autumn and larvae overwinter in shallow chambers excavated in outer sapwood or bark of thick-barked trees. Pupation begins in late April.

Print

Related Articles

• Symptoms of Emerald Ash Borer Infestation 75%

  Published in Arraylarvae, EAB, Emerald Ash Borer
  Usually EAB infestations go undetected until the trees begin to show symptoms of infestation. It may take at least one year before symptoms first appear. The symptoms below indicate the possible presence of emerald ash borer: Jagged...

• Latest EAB Information for Municipal Foresters 50%

  Published in Emerald Ash Borer, EAB
  The Morton Arboretum suggests these steps for municipal foresters: Conduct a public education campaign by helping homeowners understand what an ash tree and EAB look like. To help you educate village managers and other officials about the scope...

• Emerald Ash Borer Now in 15 States 49%

  Published in EAB, ash trees, Emerald Ash Borer
  Officials continue to confirm additional infestations of the Emerald ash borer (EAB), an invasive pest that has left tens of millions of ash trees dead in the United States. Fifteen states now reporting infestations are: Illinois, Indiana,...

• Emerald Ash Borer — Additional News 49%

  Published in Emerald Ash Borer, ash trees, EAB, insecticides
  Insecticidal ControlHomeowners and others have asked whether insecticides are useful in combating EAB. Experts have compiled a fact sheet to answer your questions. [PDF] Replacement Tree ListsMany property owners ask what kinds of replacement...

• EAB Advice to Homeowners 49%

  Published in Emerald Ash Borer, EAB, ash trees
  The Morton Arboretum suggests these steps: Do not move firewood. Campers or vacationers who head to their summer homes should acquire firewood from the local area. Familiarize yourself with ash trees. Familiarize yourself with the...

• EAB Educational Materials & Hubs 49%

  Published in Emerald Ash Borer, EAB, pest, municipal foresters
   Pamphlets and other educational materials are available for municipal foresters or others who must educate the public about EAB. Below is a list of products, some in limited quantities, and a list of hubs. Note (very important): contact...