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The Emerald wasp, also known as the Cuckoo wasp, has a brilliant metallic color created by structural coloration. They are most diverse in desert regions of the world, as they are typically associated with solitary bee and wasp species.
According to Wikipedia, the term “Cuckoo wasp” refers to the cuckoo-like way in which wasps in the family lay eggs in the nests of unrelated host species. The term is also used for some wasps outside of the family.
