du·lo·sis 
(d-lōsĭs, dy-)
(d-lōsĭs, dy-)n.
The behavioral syndrome whereby slave-making ants raid nests of other species of ants and carry off the pupae in order to provide workers for their own colony.
[Greek doulōsis, enslavement, from douloun, to enslave, from doulos, slave.]
du·lotic (-lŏtĭk) adj.