I think that someone of this specimen could be Philoctetesbidentulus(Lepeletier), just look at the punctuation on mesonotum, the hairs and the shape of the metanotum. At least the first pictures shoul be bidentulus.
I have several specimens of P. auratus (and violaceus and ?) in my garden last years (since I notice them... :? ). From May until September I see them on several locations in my garden, southern part of The Netherlands.. Now I'm in doubt. These two (first two pics) look different from the specimen I...
... case this specimen is not auratus , but it is strictly related with Philoctetesbidentulus . I cannot add anything more than I wrote here viewtopic.php?f=8&t=2247 Even ...
... and collecting periods. Sometimes it's very usefull. This is not Philoctetes sculpticollis , but it is closely related to Ph. bidentulus (Lepeletier, 1806). Where did you collected it? Abeille described from Ukraine appendicinus ...