Aphidoidea, commonly known as aphids, are small sap-sucking insects belonging to the superfamily of the same name. They are typically found on plants, where they feed on the phloem, extracting nutrients. Aphids can reproduce rapidly, often giving birth to live young, which contributes to their large populations. These insects are known for their soft bodies and can vary in color, including green, black, and yellow. Aphidoidea play a significant role in ecosystems, serving as food for various predators like ladybugs and lacewings. However, they can also be pests, causing damage to crops and transmitting plant viruses.