Agromyza alnibetulae is a fly whose larvae produce a leaf mine in the leaves of Birch. The mine is an unusually long, upper-surface corridor that widens only little and winds freely through the leaf. Frass in two neat rows.
On the leaves of Birch species
When Birch is in leaf.
Pupation takes place outside of the mine.
Widespread in Britain 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