aphid managementContents: 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
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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Whiteflies

There are several species of whitefly that are key pests in ornamental production. The most recent introduction in the PNW is the Q biotype whitefly which has resistance or reduced susceptibility to many insecticides. For more information on the new strain of whitefly, see the fact sheet at the link. The best site for current information and updates on Q biotype whitefly is the website developed by the Technical Advisory Committee.

Management:
Below you will find some information and links on the management of whiteflies.

Biological control (taken from the PNW Insect Management Handbook - Greenhouse Section last revised 2013)

1. ladybird beetle (Delphastus pusillus)

2. parasitic wasps (Encarsia formosa ; (Eretmocerus mundis)Encarsia has been very successful in some greenhouses

3. pathogenic fungi (Beauveria bassiani ; Paecilomyces fumosoroseus)

Links

ATTRA Greenhouse IPM: Sustainable whitefly control This site covers the basics in easily written language and has a strong emphasis on integrated management including good sections on biological control and the use of biorational materials and insect growth regulators.

USDA Whitefly Knowledgebase. This website has good information on the following species of whiteflies: bandedwing whitefly, greenhouse whitefly, silverleaf whitefly, and sweet potato whitefly; and a key to distinguish the above given various life stages. The management section covers many useful basics.

A Grower’s Guide to Using Biological Control for Silverleaf Whitefly on Poinsettias in the Northeast United States is a website designed by the University of Massachusetts Extension Service. It has extensive information on whitefly biology, biological control.

UC IPM Pestnotes website on whifeflies has one of the larger lists of the various whitefly species acting in ornamentals

Adult whiteflies on the underside of a blueberry leaf
adult whiteflies on the underside of a blueberry leaf
Adult greenhouse whitefly
greenhouse whitefly adult
Greenhouse whitefly eggs
greenhouse whitefly eggs


Greehouse whitely larva with distinctive long setae (hairs)
greenhouse whitefly larva
Bemisia whitefly larva with less noticeable, shorter ring of setae
Bemisia species whitefly larva
Website editor:
Robin Rosetta

Page last modified 4/12/13

 

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