The larva of the fly Phytomyza astrantiae mines the leaves of Masterwort (Astrantia major) forming a gallery/blotch mine which is brown in colour, with a pale yellow margin.
Gardens where Masterwort is present.
When Masterwort is in leaf.
The first British record came from Gloucestershire in 2005. It has since been found in Cumbria, Northants, Kent, Yorkshire, Hampshire and in Ross & Cromarty and Moray in Scotland. . It is likely to be more widespread and previously overlooked.
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