Polyergus samurai is a species of slave-making ant in the subfamily Formicinae.

It was long thought endemic to Japan,[1] but is now also known from Korea and northeastern China.

She then takes the role as queen, laying eggs destined to become her first "slave"-makers.

When the original Formica work force is starting to die out, the new workers of the colony begin to search for other colonies of the Formica to raid.

Once workers reach the host Formica nest they rush in and attempt to steal as many large larvae and pupae as possible before returning to the nest with them, destined to become workers for the P. samurai colony.