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 Updated
bark lice
Barypeithes root weevil
Beneficial nematodes
biocontrol of root weevils
birch aphid
black stem borer
bluegum psyllid
branch and twig borer
brown marmorated stink bug

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

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

dogwood sawfly
Douglas fir sawfly
Douglas fir twig weevil
elm leafminer
European pine shoot moth
European shot-hole borer Updated
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
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
sequoia pitch moth
speckled green fruitworm
tent caterpillars
viburnum leaf beetle
violet gall midge
western poplar clearwing
western spotted cucumber beetle
white pine weevil
woolly ash aphid

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Pear leaf-curling midge

An occasional pest for those producing pear trees, the pear leaf-curling midge, Dasineura pyri, causes damage to pear leaves which is generally seen during the summer months. So far, reports of damage have been on fruiting pear varieties.

Similar to other leaf galling midges, pear leaf-curling midge oviposits eggs on new growth. Eggs hatch and the developing larvae feed causing the leaves to form folds or galls alongside their outer edge which blacken. The larvae pupate in the fold galls or drop to the ground. There are thought to be three-six generations per year.

More information and images can be found at this European website: HYPP Zoology: pear leaf-curling midge

Pear leaf-curling midge damage on 'Parker' pear
pear leaf-curling midge damage
Photo: Heather Stoven
Pear leaf-curling midge and larva (emerging from lower leaf fold)
Pear leaf-curling midge and damage
Photo: Heather Stoven
Website editor:
Robin Rosetta

Page last modified 7/10/06


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