Lighthouse Gall - Rondaniola bursaria
The midge Rondaniola bursaria causes galls to form on the leaves of Ground-ivy (Glechoma hederacea). The gall takes the form of a hairy cylinder up to 4 mm tall, often several on the upper surface of a leaf. The galls are initially green, later light red or brown. Each gall contains a single larva. Galls fall off the leaf in late summer leaving a neat, circular hole. The gall is recorded more frequently than the midge.
May occur wherever Ground-ivy is found.
Galls best looked for from late June to August.
Widespread in the southern half of 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