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

bronze birch borer
boxwood leafminer
boxwood psyllid
bulb flies
carpet beetle New
Calligraph californica
caterpillars

Ceanothus stem gall moth
cereal leaf beetle
cherry ermine moth
chilli thrips
clay colored weevil
cottony camellia scale
cutworm Updated
craneflies
cypress tip moth

dogwood sawfly
Douglas fir sawfly
Douglas fir twig weevil
earwigs
elm leafminer
European pine shoot moth
European shot-hole borer
European wool carder bee
emerald ash borer
Fall webworm
flatheaded cedar borer
hollyhock weevil
honeylocust plant bug
honeylocust pod gall midge
Heliothis phloxiphaga
holly bud moth
huckleberry root aphids
ground mealybug
lacebugs
lady beetle gallery
leaf weevil
light brown apple moth
maple tip moth
maple midge
March flies
mountain ash sawfly
spruce aphid on spruce
oak ambrosia beetle
oak slug
obscure root weevil
Pacific flatheaded borer
peach tree borer
peach twig borer
pear psylla
pear leaf-curling midge
pear sawfly New
pine needle scale
poplar and willow borer
rose curculio weevil
rose midge
roseslug
sawflies
scale
sequoia pitch moth
speckled green fruitworm
spittlebug
tent caterpillars
thrips
viburnum leaf beetle
violet gall midge
western poplar clearwing
western spotted cucumber beetle
white pine weevil
whiteflies
woolly ash aphid

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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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