
Hedychridium roseum
The first Cuckoo-wasp that I've dared to ID myself, thanks to an excellent key that came out in 2015 and is available for free as a PDF :o)
Paukkunen et al. (2015) An illustrated key to the cuckoo wasps (Hymenoptera, Chrysididae) of the Nordic and Baltic countries, with description of a new species.
https://www.biodiversity.no/Files/15776/Paukkunen_et_al._2015.pdf

Hedychridium roseum (Rossi, 1790) is a species of Cuckoo-wasp (family Chrysididae) with a wide spread distribution all over the Palearctic region.
Similar species: Wasps, Bees, Sawflies And Ants
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