DUTCH DOLL CATASTROPHE. “The Glaville Fritillary butterfly was introduced into the island of Sottunga as a scientific experiment, but unfortunately it contained the larvae of a parasitic wasp, which themselves contained larvae of a hyperparasitoid wasp, as well as the parasitic bacteria Wolbachia. Unwittingly, all three species were introduced.
https://www.theguardian.com/environment/2021/sep/14/butterflies-finland-parasitic-wasps?CMP=Share_iOSApp_Other