I first made the shadow & highlight tool of photoshop the lighten the underexposed areas. Then sharpened a bit and then lastly auto levels. Hope it looks more nice now.
My friend Alex99 is right.
I had tried to hide the wall in the rear of the "HOVER FLY". In so doing the result was this:"It is so difficult kind of shooting: in-flight insect picture. Timing and composition are great. Exposure of the white petal is so poor as well as the colou reproduction of the yellow flower heart. However, image of the fly is superb."
So, I've re-posted the original in "as is" frame.
Now I feel that the result is as it SHOULD HAVE BEEN, in the first place, I hope.