An aphid is an in-game item that serves as a permanent food source. Once they spawn they will begin searching for a plant to live under, and will release Food and rarely Super Food once they have found a plant. They will only produce one food at a time, and that has to be picked up to allow for the aphid to start producing another. Ants cannot kill Aphids. Aphids can not live or produce food underground, and will die when placed underground for too long. Note that AI Ants will not pick up aphids.