I first saw these beetles on some websites. They were really very different from all the beetles I had seen. And we first met last year in evening I think, it was brownish. And since then I have seen it only 4 or 5 times.
But yesterday when I went for walk with my sister I watched 2 different colored beetles. It was really an awesome experience. These beetles are really very beautiful!





I saw this one on 20th June.



I would like to know the specific names of all these three beetles.