Colony Structure
Most species of Pheidole are dimorphic, which means that colonies contain two castes of workers: the "minor" workers, and the "major" workers, or "soldiers". The latter generally have enormous heads and mandibles in comparison to their usually fairly modest body size.
In addition, as in other ant species, a colony may contains one or several queens and also, in mature colonies, alates, virgin winged females and males.
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