I finally got myself a bug shot! I believe this beetle is a "donacia versicolorea" (thank you Google :-)
And as much as I would like to take credit for having taken a decent bug shot for once I have to admit that I was photographing the purple marshlock (one of my fav. plants by the lake this time of year) and didn't notice the beetle until I checked the photo on my computer :-)
For the flower and for the bug.
Actually a big WOW for the details.