Apidae, Apinae, Xylocopa sp., I am not sure which one and I am not sure either if all the IDs on the are correct and trustable. I have some doubts...
https://www.flickr.com/photos/cladoniophile/12091976446/
http://www.ecotourismus.de/tierwelt_europa_insekten_xylocopa_aestuans.php
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