Chrysis ignita, aka the ruby-tailed wasp, is a species of cuckoo wasp. Cuckoo wasps are kleptoparasites they lay their eggs in the nests of other wasp species. They have metallic, armoured bodies, and can roll up into balls to protect themselves from harm when infiltrating the nests of host bees and wasps. If they are caught, which happens quite often, they simply tuck and curl. The host wasp has no choice but to grab the balled up ruby-tailed wasp in its jaws and carry it outside to evict it.[8]The ruby-tailed wasp, unharmed, simply makes its way back into the nest again at the next opportunity.
Info courtesy of Wikipedia.
