Author 'Charlemagne' : The syrphid flies, a fly disguised as a wasp. One of the ways to recognize the syrphid belted is the way to fly : it is both a high speed to off and disappear from your view, while being able to do stationary flight (here on the photo), as if it were a flight of observation, before rushing to a flower. It takes a lot of patience and nerves of steel to get to the put in the box... It does that more or less 1 centimeter !