Pyramid ants are small, only 1/8 of an inch long with workers being of one size. They have a single node (bump between middle and rear body sections). Their color ranges from yellow, brown to black.
Pyramid ants get their name because they have a pyramid-shaped projection on top of the thorax.
Pyramid ants prefer open, dry and sunny areas; soil nesting. They have a distinctive nest entrance which consists of a hole surrounded by a mound of excavated soil. Their nests are typically small and shallow and not located indoors.