The gall mite Aceria lissonata causes galls on the leaves of Birch (Betula species). The gall is in the form of a bulge on the upperside, hairy and appearing rough. The gall is often close to the base of the leaf. The hairs of the erineum are pointed, whitish when young.
Where the host Birch species occur.
Whenever Birch is in leaf.
It is difficult to determine the exact status in Britain due to lack of records.
Status in Leicestershire and Rutland not known.
Leicestershire & Rutland Map
Enter a town or village to see local records
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015