Your excellent photo is of a robber fly feeding on a fly.
Tks for your reply. I then checked Robber Flies out in my Audubon book.. Great to have this service. Is it a bearded robber fly as the basic one looks to be all grey? It also seemed bigger than 1 inch long but I have no way of verifying that.
We cannot say whether it is a bearded robber fly based on the photo. vw