Hoverfly 2

Hoverfly 2

Observation - Hoverfly 2 - UK and Ireland. Description: A delicate hoverfly. Seemed to be showing territorial behaviour - returning to this spurge again and again. Any help, even if genus would be greatly appreciated.

A delicate hoverfly. Seemed to be showing territorial behaviour - returning to this spurge again and again. Any help, even if genus would be greatly appreciated.