Minnesota First Detectors

Complimentary materials

Riker mounts Look alike damage from U of MN

PDCNR, Bugwood.com

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

Minnesota First Detectors

Adults

FEMALE MALE

M. Bohne, Bugwood.org

PDCNR, Bugwood.com

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

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

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

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

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

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

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

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

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

Minnesota First Detectors

Which one is due to ALB?

S. Katovich, USDA FS, Bugwood.org

D. Haugen, USDA FS, Bugwood.org

PDCNR, Bugwood.com