Hi last June I took pictures of a jewel wasp with about 5-6 mm length in Valais in Switzerland on Euphorbia sp. Could it be C. versicolor? Kind regards
yes, you're right. It's the female of Spintharinaversicolor(Spinola). Of course you can follow Linsenmaier and place versicolorin the genus Chrysis Linnaeus. It is correct anyway. On the web-site we follow Kimsey & Bohart's interpretation of the genera only for practicle reasons.