Awesome photo. Have you found a way to control mosquitos in your ponds?
A follow up on this ....
I took the picture below at the end of April; I was trying to get some shots of tadpoles but wasn't particularly pleased with the results so I trashed all but this one as it was taken just as a diving beetle was making the final move on a female mosquito that was busy laying eggs.
The tadpole I was shooting was nibbling at the surface (1).
The mosquito was busy laying eggs (2)
The beetle was moving quickly up from below to nail the mosquito (3)
While i was still looking though the lens, in a fraction of a second after this frame snapped I saw the beetle snatch the mosquito and immediately return to the depths below. I remembered to look for it when reviewing the pics on my pc and sure enough, the beetle was in the frame.

I thought it was pretty cool, the first time I had witnessed a beetle on the hunt. However, Mrs cohutt was much less intrigued when I showed it to her