Pheidole rhea

A Pheidole rhea super major. This ant's head was so oversized that it seemed to have difficulty walking. They are much less common in the foraging columns than are the minor and major workers, presumably spending much of their time in the nest.
A Pheidole rhea super major. This ant's head was so oversized that it seemed to have difficulty walking. They are much less common in the foraging columns than are the minor and major workers, presumably spending much of their time in the nest.