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The adults of Eriosoma lanigerum are small to medium-sized aphids, [4] up to 2mm long, and have an elliptical shape, are reddish brown to purple in colour but the colour is normally hidden by the white cotton-like secretion from the specialised glands in the aphid's abdomen which gives it the common name of woolly apple aphid.
Aphids can also transmit viruses and allow sooty mold to take hold. When the population becomes too large, an aphid might grow wings and fly away to find a fresh host plant.
Aphelinus mali is a parasitoid wasp that exploits the woolly apple aphid (Eriosoma lanigerum), a pest of apple trees. [1] It is native to the northeastern United States but has been introduced to other parts of the world as a biological pest control agent.
The woolly apple aphid, Eriosoma lanigerum is a widespread pest of fruit trees, feeding principally on apple, but also, pears, hawthorn, ash, alders, elms and oaks. Gall making species include Melaphis rhois and Pemphigus spp. Further minor damage can be caused by the honeydew that woolly aphids
However, while garden aphids often spell disaster for vegetables and flowers, milkweed aphids usually don’t do much damage, and pest control treatments can do more harm than good.
The problem is that if we use the garden for those reasons, so do the bugs. Many insects can plague a vegetable garden through the growing season, including aphids, cucumber beetles, squash vine ...
Insecticidal soap is used to control many plant insect pests. Soap has been used for more than 200 years as an insect control. [1] Because insecticidal soap works on direct contact with pests via the disruption of cell membranes when the insect is penetrated with fatty acids, the insect's cells leak their contents causing the insect to dehydrate and die. [2]
Aphis spiraecola is a species of aphid described in 1914 by Edith Marion Patch. [1] Its common names include green citrus aphid, [2] Spirea aphid, [3] and apple aphid. [4] It is distributed worldwide, and is most abundant in the United States. [5] It has a diploid chromosome number of 2n=8. [6]
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