There are numerous "cuckoo" like parasites of various bees. Bumblebees
have them within the genus Bombus, even. Bombus polaris, which develops
normal colonies in the arctic has the cuckoo parasite B. hyperboreus. The
latter usurps the B. polaris nests, using the workers to its adavantage
and laying eggs that produce only the next generation of sexuals (no workers).
The genus Psithyrus comprises several species which are cuckoo parasites
of Bombus. The complex of Nomada (Nomadinae) bees may also be termed cuckoo
bees for their similar relationships with various "solitary" bees.
Psithyrus may be found in honeybee hives on occasion. They "hotel" there,
staying overnight, as it were, but do not take up residence.