Rhingia hoverfly - but which?

Rhingia hoverfly - but which?

Observation - Rhingia hoverfly - but which? - UK and Ireland. Description: This fly, in the field, seemed to have an orange abdomen - except for a small black central triangle on tergite 2. The photos do show slight black edges to the tergites though. I am tempted to say rostrata but this would be unusual in this area?

This fly, in the field, seemed to have an orange abdomen - except for a small black central triangle on tergite 2. The photos do show slight black edges to the tergites though. I am tempted to say rostrata but this would be unusual in this area?