Ant castes. Computer illustration showing the differences in appearance of a ant (family Formicidae) castes. At top is a queen, a female ant that lays the colony's eggs. Below the queen is a winged male ant, or drone, which will die as soon as it has mated. At bottom left is a soldier ant, a sterile female with large mandibles (jaws). At bottom are worker ants, the small sterile females that make up the majority of the colony.
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