Class Insecta contains many major plant pests such as aphids and thrips. Damage can be caused by both larval and adult stages. They can cause feeding damage or transmit a bacterial, viral, or fungal infection.
Changes in leaf color or texture can signal an insect problem. Leaves may become spotted, speckled or yellowed when insects are present. Leaves might also become distorted or misshapen, often looking cupped or pinched. You may spot webbing draped along leaf undersides or where leaves attach to stems.
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