The larvae of the fly Liriomyza taraxaci mine the leaves of Dandelion Sow-thistle and Autumn Hawkbit, forming a small, irregular, elongated blotch with few frass grains inside the mine.
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Where the larval hostplants occur.
The mines can be seen in spring to early autumn.
The larva leaves the mine to pupate.
Said to be widespread in the south of England, but there are few records on the NBN.
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