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Macrodiplosis roboris
Larvae of the gall midge Macrodiplosis roboris cause the leaves of Oak to roll upwards forming a gall. The rolls usually occur between the lobes of the leaf. An orange larva is inside the gall
Macrodiplosis pustularis causes the lobes of oak leaves to fold down
Areas where Oak is present.
Fresh galls can be encountered from June until late September when the rolls turn brown and the larvae escape.
Larvae white at first, ± orange later; one generation per year; the larvae hibernate in the soil.
Probably fairly frequent in Britain, but status is difficult to determine due to lack of records.
Status in Leicestershire and Rutland not known.
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MAP KEY:
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015
UK Map
Species profile
- Species group:
- Flies
- Kingdom:
- Animalia
- Order:
- Diptera
- Family:
- Cecidomyiidae
- Records on NatureSpot:
- 8
- First record:
- 10/10/2017 (Calow, Graham)
- Last record:
- 11/09/2023 (Barber, David)
Total records by month
% of records within its species group
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