Accidentally imported to Detroit in wooden packing material from China in mid-1990s.

Spread by humans – DON’T MOVE FIREWOOD!!!

Current map at http://emeraldashborer.info/files/MultiState_EABpos.pdf

Emerald Ash Borer (EAB) Life Cycle

Adult (May-July)

Prepupa (August-

April)

Larva (May-November, 4 instars,

1 or 2 years)

Egg (May-July)

Pupa (April-June)

David Cappaert

D. Cappaert, MSU

EAB larvae kill ash trees by feeding on phloem tissue beneath the bark, creating galleries which girdle the tree (cut off its ability to transport sugars).

www.paulnoll.com

Woodpeckers

Asian parasitoid insects

North American parasitoid insects

Cappaert

Parasitism is a relationship where one organism benefits at the expense of another organism (usually of a different species).

A parasite is smaller to its host and usually doesn’t kill its host (fleas on a dog)

A parasitoid is similar in size to its host and kills its host (Alien movie)

Atanycolus (North American parasitoid)

Photos by David Cappaert

Atanycolus (North American parasitoid)

Photos by David Cappaert

Parasitoid larva feeds on EAB larva

Egg on EAB

Female oviposits on EAB through bark

Parasitoid finishes feeding then forms cocoon

POP QUIZ

Name the life stages of EAB Which life stages may be present in

the winter? Name five states where EAB is

present What parts of ash trees do EAB

larvae and EAB adults eat? What organisms prey on EAB?

POP QUIZ - answers Egg, larva, prepupa, pupa, adult Larva (two year life cycle) and

prepupae Michigan, Ohio, Indiana, Illinois,

Wisconsin, Minnesota, Pennsylvania, West Virginia, Virginia, Missouri, Kentucky, New York

EAB larvae eat phloem, EAB adults eat leaves

Woodpeckers and parasitoid wasps