Cuckoo wasp

Metallic, emerald green hymenopteran perching on my back porch.
From 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. Chrysididae, the scientific name of the family, refers to their shiny bodies and is derived from Greek chrysis, chrysid-, "gold vessel, gold-embroidered dress", plus the familial suffix -idae. The common names of many species pay similar tribute to their appearance: jewel wasp, gold wasp, emerald wasp, ruby wasp and so on"