A fly with a well-marked wing pattern which can be identified with care. The larvae gall the flowers of Common Fleabane (Pulicaria dysenterica).
Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.
Where Common Fleabane occurs.
July and August.
Records for this species come mostly from the south and east of England.
Status in Leicestershire and Rutland not known.
Leicestershire & Rutland Map
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Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015