Aphids: Can attack plant roots

Aphids can attack plant roots, causing the plant to shrivel and die. Learn the facts about how to kill aphids and natural aphid control options. aphid, (family Aphididae), any of a group of sap-sucking, soft-bodied insects (order Homoptera) that are about the size of a pinhead, most species of which have a pair of tubelike projections (cornicles) on the abdomen. The aphids are soft-bodied small insects (< 7 mm) and feed by sucking plant sap. They usually live in colonies on the undersides of leaves or tender terminal shoots. Aphids excrete considerable amount of sugary liquid, honeydew, on which sooty mould usually... What is an aphid? Aphids are small, soft-bodied insects that feed by inserting their slender mouthparts into phloem cells, the food conduits of plants. Most aphid species feed on only one species of plant and closely related aphid species tend to feed on closely related species of plants. Once an aphid finds the correct plant species, it simultaneously feeds and reproduces. Offspring settle close to their mothers, spawning large colonies. Newborn nymphs molt four times, each time growing ...