These were found in the pond at Lorgba - which is only tiny, although quite deep - with its edge defined by a tractor tyre. The Water cricket (Velia caprai) is the handsome chap with orange sides. I am unsure what the water beetle is. Any suggestions? The beetle comes to the surface regularly to breathe by sticking its abdomen through the surface film and staying there for about five seconds - as can be seen in the photo - then zooming back down to the bottom.