Thanks April. I wondered if they were ants when I first looked at them. The thing that surprises me is they seem to be hatching in the pond??

I took a closer look at one with a magnifying glass. It has a three part body - sort of a wide two bulb head with two antenna - mid section with either six or eight legs - and back section that is about twice as large a mid section with a point at the back that looks like a wasp stinger.

It's great to see a smile on a dog