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Minnesota First Detectors
Complimentary materials
Riker mounts Look alike damage from U of MN
PDCNR, Bugwood.com
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Minnesota First Detectors
● 3/4 to 1 1/2 inches long
● Glossy black with up to 20 white spots
● Long antennae (1 to 2 1/2 times body length) with distinctive white bands
● Feet with a bluish tinge
The Asian longhorned beetle
PDIL, Bugwood.org
PDCNR, Bugwood.com
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Minnesota First Detectors
Adults
FEMALE MALE
M. Bohne, Bugwood.org
PDCNR, Bugwood.com
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Minnesota First Detectors
Which beetle is ALB?
W. Cranshaw, CO State Univ., Bugwood.org
K. Law, USDA APHIS PPQ, Bugwood.org
L. Lazarus, NC Div. of For. Res., Bugwood.org
PDCNR, Bugwood.com
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Minnesota First Detectors
● 2 3/8 inches long, legless
● Cream-colored body
● Brown “shield” behind head
● Brown mouth parts
● Difficult to distinguish from other longhorned beetles
Larvae
PDCNR, Bugwood.org
PDCNR, Bugwood.org
D. Haugen, USDA FS, Bugwood.org
PDCNR, Bugwood.com
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Minnesota First Detectors
Which larva could be ALB?
J.
So
lom
on
, U
SD
A F
S,
Bu
gw
oo
d.o
rg
US
DA
AP
HIS
PP
Q,
Bu
gw
oo
d.o
rg
PDCNR, Bugwood.com
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Minnesota First Detectors
Egg niches
● Round to oval shaped
● 3/4-inch diameter
Cutaway showing egg
L. Barber, USDA FS, Bugwood.org
Oozing sap
D. Haugen, USDA FS, Bugwood.orgD.
Ha
ug
en
, U
SD
A F
S,
Bu
gw
oo
d.o
rg
D.
Ha
ug
en
, U
SD
A F
S,
Bu
gw
oo
d.o
rg
PDCNR, Bugwood.com
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Minnesota First Detectors
Exit holesPN DCNR, Bugwood.org
D. Haugen, USDA FS, Bugwood.org
● 3/8-inch diameter
● Round shaped
● Should be able to insert the eraser-end of a pencil at least one inch into the hole
Patricia Douglass, USDA APHIS-PPQ
PDCNR, Bugwood.com
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Minnesota First Detectors
Exit holes & egg niches
PN DCNR, Bugwood.org
T. Denholm, NJ DA, Bugwood.org
Patricia Douglass, USDA APHIS-PPQ
PDCNR, Bugwood.com
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Minnesota First Detectors
Frass
PN DCNR, Bugwood.org
L. Barber, USDA FS, Bugwood.org
● Created by tunneling larvae
● Coarse sawdust
● Accumulates at base of tree and crotches of branches
PDCNR, Bugwood.com
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Minnesota First Detectors
Tunneling
L. Barber, USDA FS, Bugwood.org
E.R. Hoebeke, Cornell Univ., Bugwood.org
L. Barber, USDA FS, Bugwood.org
PN DCNR, Bugwood.org
PDCNR, Bugwood.com
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Minnesota First Detectors
Which damage is from ALB?
D. Haugen, USDA FS, Bugwood.org
R. Anderson, USDA FS, Bugwood.org
MN DNR, Bugwood.org
PDCNR, Bugwood.com
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Minnesota First Detectors
Which one is due to ALB?
S. Katovich, USDA FS, Bugwood.org
D. Haugen, USDA FS, Bugwood.org
PDCNR, Bugwood.com