Source: http://sploid.gizmodo.com/this-beautiful-rainbow-insect-is-a-wasp-1606998758/+jesusdiaz
So today I learned that all wasps are not yellow and black. There's a an iridescent rainbow variant called the cuckoo wasp—of which this is a particularly beautiful specimen. They are kleptoparasitic wasps, who lay eggs in others insects' nest. The baby wasps will then eat the eggs or larva in the nest. Gorgeous bastards.