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.' ``' 1� Distribution tion and Hosts
<br /> �`�' � '` The emerald ash
<br /> �� Japan, Mongolia, borer Russian indigenous stt ando ia Taiwan known to occur in China, Korea,
<br /> 3 populations of the borer occur primarily in Fraxinu
<br /> � A Chinese report indicates high
<br /> forests. Other reported hosts in
<br /> 1,� d
<br /> forests.
<br /> a hjaponicans, a dshurica and F rhynchophyus
<br /> Asia include F. mandshurica var.
<br /> # � In Michigan this ha�/been mandshur,ca var.sieboldiana,and Pterocarya japonica, Ulmus
<br /> I n Michigan, this borere ash Fobserved only on ash trees. It has killed green{ash
<br /> horticultural varieties of ash. ( americana), and black ash F.
<br /> n ' i "
<br /> fi a, ( nigra) as well as several
<br /> "� Symptoms
<br /> "' != Infestations of emerald ash borer can be difficult
<br /> • Evidence of infestation includes D-shaped to detect until canopy
<br /> i ' t�; t produced by exit holes on branches and thetrunk.k begins.
<br /> Jr*: 5s tissue cm in len the tree in response
<br /> length to occur in the bark above feedingthe gallery
<br /> Callus
<br /> filled larval tunnels etch the outer sapwood and may cause vertical splits
<br /> (Figure r 7). phloemry (Figure trunk6). and
<br /> branches
<br /> An elliptical area of discolored sapwood likely a result of second
<br /> by fungal of the and branches
<br /> Figure 6. p the ens sometimes surrounds larval feeding
<br /> 9 Verticals lit in bark aboveers infection
<br /> Infested branches in the canopy galleries in live trees.
<br /> larval gallery excavatedd feeding lhevcdie when the
<br /> Many trees appear y are girdled t the 0serpentineetunnels
<br /> the
<br /> canopy in one year and the tree is often killed after 2_3
<br /> canopy
<br /> a to lose about of infestation to 50
<br /> A '` 41, profusion of epicormic shoots arises at themarginpercent of the
<br /> Frequently the trunk. When trees die, dense root prises years livendead
<br /> tissue 8
<br /> i of live and dead
<br /> •� ; �. � - .� �� Emerald ash borer killed trees of various size and occurs.
<br /> k successfullyrald developed on trees as 5
<br /> slized trees kias small Stress likely5cm condition in t Michigan. Larvae
<br /> .:::
<br /> "' in diameter, but
<br /> trees and recent sees wereer also
<br /> droughtspole-sizedof and
<br /> populations in southeastern may have contributed to high emerald vulnerabilitys
<br /> sh Michigan. ash
<br /> g However emerald ash borer attacked boreran
<br /> killed apparently vigorous trees in igan. Ho and
<br /> � .
<br /> r 1411
<br /> and fertilization regimes. urban trees under regular irrigation
<br /> ' Sources
<br /> ' „ .. " Yu, Chen g
<br /> gming. 1992.q rilus marcopoli Obenberger. In Xiao, G,
<br /> ;�' ` of China. 2d ed. Beijing,
<br /> ` 1 g, China: House;edForest40insects
<br /> 1
<br /> ": Jendek, E. 2002. Agrilus planipennis fact sheet.Forestry Publishing 400-401.
<br /> Institute of Zoology Slovak AcademyPDF file provided
<br /> sofby EdSlovakdo
<br /> Jendek,
<br /> Sciences Bratislava, Slovak Republic.
<br /> Figure 7. Green ash killed by emerald ash
<br /> borer showing D-shaped exit holes Resources
<br /> s,,,: .. f report Emerald Ash Borer inside the state of Michigan,
<br /> �{` r Visit the following websites for detailed informationg call 866 325-0023.
<br /> y t� I t w /�` J �
<br /> y' ,, " ! . on Emerald Ash Borer:
<br /> ���a , Illi t A h , USDA Forest Service: http://www.na.fs.fed.us/spfo/eab/index.html
<br /> t, I,/ w`s�`••f 'ilf ,r Michigan De p' �'u na.fs.fed.us/spfo/nab/index.ht
<br /> RR f1i 9 Department of Agriculture: ml
<br /> 4, , n` : : http://www.michi an.
<br /> 11
<br /> 9 gov/mda/0,1607,7-125-1568_2390_18298-4415 __
<br /> Michigan State University: http://www.msue.msu.edu/reg_se/roberts/ash/index.html
<br /> Authors:
<br /> � , ,, Deborah G.McCullough,
<br /> Forestry,—.1444' -s •
<br /> ahg Associate Professor,Department of Entomology
<br /> gan State
<br /> David L.Roberts,Extension specialist nd District horticulture
<br /> r and Department of
<br /> i - Photo credits: a ant,
<br /> 9 Michigan State University
<br /> Howard Russell,Andrew Storer,Deborah G.McCullough,and David L.Roberts
<br /> Prepared by:
<br /> Figure 8 Heavily infested ash trees
<br /> USDA Forest Service
<br /> �.a 1 Northeastern Area,State and Private Forestry
<br /> Newtown Square,Pennsylvania
<br />
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