cuckoo wasp

American  

noun

1. any of several small, metallic-green or -blue wasps of the family Chrysididae that deposit their eggs in nests of other wasps.

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Example Sentences

He told her that he was interested in the cuckoo wasp.

From The Guardian

And who cares what the cuckoo wasp’s eco-role is?

From New York Times

There is only one case known of a cuckoo wasp, and that resembles its host even more closely than do the cuckoos of the humble bees.

From Project Gutenberg