slave ant

US /ˈsleɪv ˌænt/
UK /ˈsleɪv ˌænt/
"slave ant" picture
1.

an ant that has been captured by another species of ant and forced to work for them

:
The raiding ants brought back pupae to raise as slave ants.
The colony relies heavily on its slave ants for foraging and nest maintenance.