The larvae of the fly Liriomyza eupatorii mine the leaves of various plants including Hemp-agrimony (Eupatorium cannabinum). The mine commences with a conspicuous regular spiral (that quickly turns brown), and then continues as a fairly straight corridor that maintains almost the same width throughout its length. Frass occurs in long strings.
Where the larval foodplants occur.
Mines can be encountered whenever the larval foodplants are in leaf.
Widespread in England and Wales but not well recorded.
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