Jumping plant lice, also known as psyllids, are small, sap-sucking insects belonging to the family Psyllidae. They are typically found on various plants, where they feed on the sap, potentially causing damage to the host plant. These insects are characterized by their ability to jump, which helps them evade predators and move between plants. These pests can be identified by their small size, usually ranging from 1 to 5 millimeters, and their distinctive, rounded bodies. Some species of jumping plant lice can also transmit plant diseases, making them a concern for gardeners and farmers alike. Effective management often involves monitoring and controlling their populations to protect plant health.