Andricus curvator is a Cynipid gall wasp that causes galls to form in the leaves of Oak. The sexual generation gall is roughly globular, about 8 mm across and often distorts the leaf and midrib. Sometimes several galls coalesce.
Where Oak is present.
June and July.
Widespread and fairly frequent in Britain.
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