Contents: By Damage and Image
(In progress)
Contents: Alphabetical
alder flea beetle
aphid management
apple and thorn skeletonizer
apple ermine moth
ash whitefly new
azalea bark scale
azalea lace bug
azalea sawfly new
bark lice
Barypeithes root weevil updated
Beneficial nematodes
biocontrol of root weevils
birch aphid updated
black bean aphid new
black cherry aphids new
black stem borer
bluegum psyllid
branch and twig borer
brown marmorated stink bug

bronze birch borer
boxwood leafminer
boxwood psyllid updated
bulb flies
cabbage whitefly new
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
cypress tip moth
dogwood sawfly
Douglas fir sawfly
Douglas fir twig weevil
dustywings new
elm leafminer
European pine shoot moth
European wool carder bee
emerald ash borer
Fall webworm
flatheaded cedar borer
ground beetle gallery new
hollyhock weevil
honeylocust plant bug
honeylocust pod gall midge
Heliothis phloxiphaga
holly bud moth
huckleberry root aphids
ground mealybug
Japanese beetle new
lacewings new
lady beetle gallery updated
leaf weevil
light brown apple moth
maple aphids updated
maple tip moth
maple midge
March flies updated
mountain ash sawfly
Narcissus bulb fly updated
Natural enemies gallery new
spruce twig aphid
oak ambrosia beetle
oak slug
oak twig gall wasp new
obscure root weevil
Pacific flatheaded borer
peach tree borer
peach twig borer
pear blight beetle updated
pear psylla
pear leaf-curling midge
pear sawfly
pine needle scale
pine and cone spittlebug new
poplar and willow borer
Psyllopsis fraxinicola updated
rose curculio weevil
rose midge
rove beetle gallery new
sequoia pitch moth
soldier beetle galleryn new
snakefly gallery new
speckled green fruitworm
meadow spittlebug updated
tent caterpillars
viburnum leaf beetle
violet gall midge
western poplar clearwing
western spotted cucumber beetle
white pine weevil updated
woolly ash aphid
woolly beech aphid updated

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Pear psylla

Pear psylla, Cacopsylla pyricola (Foerster), are sucking insects that can cause damage to ornamental and edible varieties of pears.

For more information and images of pear psylla, check the following links:

UC IPM Online: Pear psylla
This site is one of the most comprehensive on this insect pest. Though targeting fruit pears, much of the information is relevant to ornamental pears.

Virginia Tech fact sheet: Pear psylla
This site has nice information on the description, biology, monitoring, and damage of pear psylla.

Utah State's Pear psylla fact sheet
Another thorough treatment from a fruiting pear perspective

WSU Psylla gallery
Great images!

Pear psylla damage to pear leaf
pear psylla damage
Photo: Jim Young/OSU
Pear psyllid nymph
pear psyillid nymph
Photo: Jim Young/OSU
Pear pyllid nymphs and eggs
pear psyllid nymphs and egg
Photo: Jim Young/OSU
Adult pear psyllid
adult pear psyllid
Photo: Ken Gray
Website editor:
Robin Rosetta

Page last modified 9/17/08


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