I noticed this distinctive egg-timer shape on its back and two white stripes. The drone-fly is so called because it resembles the drone of the honeybee. The markings can be quite variable, but they have a pale face.
The larvae live in moist, nutrient-rich places – standing water, moist compost or sileage. The adults are found around flowers feeding on nectar and pollen. They are also known as flower flies.