Sphecodopsis is a genus of cleptoparasitic "cuckoo" bees in the family Apidae.

Females of cuckoo bees can be easily recognized in almost all cases, as they lack pollen collecting structures (the scopa) and do not construct their own nests.

Many cuckoo bees are closely related to their hosts, and may bear similarities in appearance reflecting this relationship.

Thyreus is a genus of bees commonly known as cuckoo bees, which parasitise other species of bee.

There are many different lineages of cuckoo bees, all of which lay their eggs in the nest cells of other bees.

The larval cuckoo bee then consumes the larder and later emerges from the cell.

Examples of cuckoo bees are Nomada and Epeoloides.

The nests are frequently invaded by cleptoparasitic "cuckoo bees."

Males looking for mates, nest defence, active parasites and cuckoo bees, and lots of other complex goings on difficult to understand.

Some "cuckoo" bees, these are Nomada species.