About Chrysis viridula Linnaeus, 1761
Chrysis viridula is a species of cuckoo wasp native to the Western Palearctic, first formally described by Carl Linnaeus in 1761. It is classified in the genus Chrysis, within the cuckoo wasp family Chrysididae. This species acts as a parasitoid on multiple species of eumenid wasps, with most hosts belonging to the genus Odynerus. In the United Kingdom, it occurs across southern England and the Channel Islands, ranging north as far as northeast Yorkshire. In Wales, it is only found in coastal locations, and it has never been recorded in Scotland or Ireland. This wasp also occurs across many regions of mainland Europe, including Norway, Sweden, Finland, Denmark, the Netherlands, Belgium, France, Spain, Germany, Italy, Poland, Hungary and Romania. Its range extends east to the Caucasus and south to North Africa.