Contents: By Damage and Image
In progress
Contents: Alphabetical

alder flea beetle
aphid management
apple and thorn skeletonizer
apple ermine moth
ash whitefly
azalea bark scale
azalea lace bug
azalea sawfly
Bagrada bug
bark lice
Barypeithes root weevil
Beneficial nematodes
biocontrol of root weevils
birch aphid
black bean aphid
black cherry aphids
black stem borer
bluegum psyllid
Boisduval scale
branch and twig borer
brown marmorated stink bug

bronze birch borer
boxwood leafminer
boxwood psyllid
bulb flies
cabbage whitefly
carnation tortrix
carpet beetle (images)
Calligraph californica

Ceanothus stem gall moth
cereal leaf beetle
cherry ermine moth
chilli thrips
cinnabar moth
clay colored weevil
cottony camellia scale

crane flies
cypress tip moth

dogwood sawfly
Douglas fir sawfly
Douglas fir twig weevil
elm leafminer
European pine sawfly new
European pine shoot moth
European wool carder bee
emerald ash borer
Fall webworm
fir coneworm new
flatheaded cedar borer
ground beetle gallery
Hemerocallis gall midge new
hollyhock weevil
honeylocust plant bug
honeylocust pod gall midge
Heliothis phloxiphaga
holly bud moth
huckleberry root aphids
ground mealybug
Japanese beetle
lady beetle gallery
leaf weevil
light brown apple moth
Linden aphid new
lupine aphid new
Macrosiphum rhamni new
maple aphids
maple tip moth
maple midge
March flies
mountain ash sawfly
Myzocallis sp. on red oak new
Narcissus bulb fly
natural enemies gallery
oak ambrosia beetle
oak slug
oak twig gall wasp
obscure root weevil
Pacific flatheaded borer
peach tree borer
peach twig borer
pear blight beetle
pear psylla
pear leaf-curling midge
pear sawfly
pine needle scale
pine and cone spittlebug
poplar and willow borer
Psyllopsis fraxinicola
rose curculio weevil
rose midge
rove beetle gallery
rose stem girdler
sequoia pitch moth
soldier beetle gallery
snapdragon plume moth new
snakefly gallery
speckled green fruitworm
meadow spittlebug
spotted asparagus beetle
spruce twig aphid
tent caterpillars
viburnum leaf beetle
violet gall midge
western poplar clearwing
western spotted cucumber beetle
white pine weevil
woolly alder aphid new
woolly ash aphid
woolly beech aphid

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Viburnum leaf beetle

Viburnum leaf beetle, Pyrrhalta viburni (Paykull), is a chrysomelid beetle, aptly named, as it feeds on leaves of viburnum. The damage potential from the beetle is quite extensive, if not managed. The beetle, first introduced from Europe to Ontario, Canada in 1947, has spread and is reported from Connecticut, Maine (1994), Massachusetts, New Hampshire, New Jersey, New York (1996), Pennsylvania, Ohio (2002), Pennsylvania,and Vermont. The beetle has been found in a number of sites in King, Skagit, Snohomish, Whatcom Counties in Washington State. It had previously been found in British Columbia.

Biology and Life cycle: Viburnum leaf beetle overwinters in the egg stage. Eggs are inserted into pits chewed into the stems, generally in a straight line. Larvae hatch from the eggs in the spring mid-late April. There are three larval stages (instars). Larvae eventually drop or crawl down the trunk of the plant to pupate in the soil. Pupae remain in the soil for about 10 days. Adults are found in the summer in July. Both larvae and adults feed on leaves. Adult females begin laying eggs in the late summer and fall. She can lay up to 500 eggs during her lifetime. There is only one generation per year.

Monitoring and damage: Look for oviposition scars on current year's growth. Look for holes in leaves in the spring by the larvae. They usually feed on the leaf undersides. Like many leaf beetle larvae, they superficially resemble a caterpillar but lack crochets (hooked appendages) on the prolegs. The newly hatched larvae are very small, around 1/8" long and are light yellow to tan. Their feeding damage tends to be leaf skeletonization. Larger larvae are light to dark green with black spots.The adult beetles are bronze-brown color and similar in size to an elm leaf beetle. Feeding by the adults tend to show up as larger holes in the leaves. Dieback from oviposition can also lead to terminal dieback on stems.

The following websites have useful information and images of viburnum leaf beetle:


Viburnum: Viburnum Leaf Beetle. Hort Sense, WSU Extension.

Poor plant defenses promote invasive beetle's success, not lack of predators Cornell Chronical Online. April 11, 2011

Murray, T., E. LaGasa, C. Loony, and N. Afflito. 2016. Pest Watch The Viburnum Leaf Beetle. Washington State University Extension. <13 April 2016> New

Cornell's Viburnum Leaf Beetle: Citizen Science This site has some very nice information including a list of the Susceptibility to infestation


Original publication: 5/19/2004
Most recent update. 4/13/2016

Author: R.L. Rosetta, Extension Nursery Integrated Pest Management, Department of Horticulture, Oregon State University


Viburnum leaf beetle feeding frenzy
viburnum leaf beetle feeding
Photo: Todd Murray, WSU
Extensive viburnum leaf beetle damage in landscape.
viburnum leaf beetle landscape damage
Photo: Todd Murray, WSU
Feeding damage and viburnum leaf beetle
viburnum leaf beetle feeding damage
Photo: Todd Murray, WSU
Feeding pattern on leaf
viburnum leaf beetle leaf damage
Photo: Todd Murray, WSU
Viburnum leaf beetle oviposition damage
viburnum leaf beetle oviposition damage
Photo: Todd Murray, WSU
Viburnum leaf beetle adult
viburnum leaf beetle adult
Photo: Todd Murray, WSU
Viburnum leaf beetle adults
viburnum leaf beetle adults
Photo: Todd Murray, WSU
Website editor:
Robin Rosetta

Page last modified 4/13/16


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