The genus Polyrhachis includes various species of ants that are known for their slender and elegant appearance. These ants are often characterised by their long and curved dorsal spines. They are active foragers and tend to collect a variety of food sources, including nectar, sugar secretions from other insect species, and small insects.

Polyrhachis ants are known for their aggressiveness and are often able to defend their colony from predators or other ants. They also have an interesting social system that includes various worker castes, including defense soldiers and laborers.

This genus of ants provides an interesting subject for the study of behavior and ecology and is often kept by ant breeders because of its attractive appearance and interesting colony interactions.