Topic summary
Brood parasite
Extracted from the Wikipedia article Brood parasitism.
True brood parasites
True brood parasitism is rare among insects. Cuckoo bumblebees (the subgenus Psithyrus) are among the few insects which, like cuckoos and cowbirds, are fed by adult hosts. Their queens kill and replace the existing queen of a colony of the host species, and then use the host workers to feed their brood.