Chrysis.net Forum

... you know this: When I check distribution maps of the three mentioned species, then H. nobile seems to be much more frequent than H. niemelai or H. gerstaeckeri. Is this true that H. nobile is more frequent, or are the other 2 species maybe as frequent as H. nobile, but are mostly taken wrongly ...

male of either H. nobile or H. niemelai, impossible to say which, could perhaps be a H. gerstaeckeri as well

Yes it is Hedychrum sp. (I would even say H. gerstaeckeri from the jizz and also because they like very much Achillea millefolium, but impossible to confirm by your pictures).
Cheers

Hello,

I have more photos so I can check them out.
Which characteristics would be relevant for an identification of this cuckoo wasp?
Maybe I have the right photos.


Greetings
Maik

... and two more photos.

Maik

... and more photos.

Maik

Hello everyone,

is this a male of Hedychrum gerstaeckeri?
Germany, North Rhine-Westphalia, Mülheim an der Ruhr, in a industry wasteland , 07th July 2021.

Greetings Maik

Many thanks for your help and also for the link to flickr. Your photos are absolutely perfect and beautiful!

Hello Anja, I think from the coarse punctation on T3 and the mandibles, you might be right but maybe someone else could confirm you. I use to check the mesotibial groove as it is (I think) a more reliable feature. But it's tiny and of course, you need to catch the wasp and have a magnifying glass...

... I photographed this wasp in our garden in July. I assume it is Hedychrum gerstaeckeri. It has no prongs at the end of the tergite, the 3rd tergite with projecting angles. ...