Question: what is the difference between plant aphid and the ladybug in feeding?
Answer: Ladybugs eat aphids whole as adults, and one ladybug may eat as many as five thousand in a lifetime. As youngsters they stab aphids with their mandibles (biting jaws) and suck out their juices, not unlike the way the aphid sucks sap from leaves. Ladybugs are often named after the number of spots on their wing covers.