Homoptera is a group of insects with piercing and sucking mouthparts that cause direct damage to plants. Homopterans include aphids, whiteflies, and leafhoppers, and are major vectors of viruses in plants.
Signs of damage:
Plant stunting and severe curling of leaves occur when the leafhopper Empoasca fabae punctures the undersurfaces of leaves and veins of bush beans and inhibits growth. This leafhopper also feeds on alfalfa and causes leaves to turn yellow and drop off.
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