Also saw an all black Xylocopa and one other reddish one that day, but never got pics :(
While I was having a afternoon walk, a bee flew past me. I was too terrified to move that I just froze in place. But when I saw that the bee was not ''attacking'' me, I just slowly but steadily walk past it. I was verry happy that it did not sting me. Thank you Mr. Bee!