Boundary disputes settled by all-out warfare. Sound familiar?
Such eruptions of millions of these pavement ants from their nest happen infrequently, but predictably in the spring, when colonies get too large and need to expand, only to find that they have trespassed on a neighboring colony in their expansion. Pavement ants are fiercely aggressive, attacking members of another colony with their large mandibles and ripping heads from bodies.
Pavement ants are tiny, household pests that must have come with early settlers of North America, because they have been here since the early 1800s. The must be hearty creatures because they can colonize some of the most uninhabitable-looking spaces. The mounds of sand and dirt you might find between slabs of concrete in the summer are the work of pavement ants venting their underground nests.
Just another day in the life of a pavement any colony.
Incidentally, if you like cool photos of insects, Alex Wild’s photo gallery has some amazing ones.