Ants are hard to get rid of. In giant and swarm forms, even more so.
A hive of giant ants has taken over the abandoned mine just outside of town. The strange glowing orbs they have been seen tending are not eggs, however.
Even the demon apes of the Blood Ape Jungle fear army ant legions on the march, prudently fleeing from their approach. This can lead them into odd alliances—or murderous conflict—with the stilt house-dwelling human tribes who live nearby.
In folklore, brownies are helpful house spirits, doing chores around the steadings of benevolent farmers. The barbed lance-bearing, giant ant-riding brownies of the Thistleback clan are of a decidedly more martial character.
—Pathfinder Bestiary 16