1. small jumping plant-sucking insects that are pests of many crops and trees
Usage: entomology; plural form

Examples

• Psyllids are major pests of citrus trees worldwide.
• The farmer sprayed insecticide to control the psyllids damaging his potato crop.
• These tiny psyllids can transmit plant diseases as they feed.
• Psyllids overwinter as adults in protected locations.
• The sticky honeydew produced by psyllids attracts ants.
• Biological control agents help manage psyllid populations naturally.