Hairy-catkin Gall Causer - Andricus foecundatrix f. sexual
Small oval galls on male oak catkins, early in year. The galls are covered in white straggly hairs and often have a dark tip. The base is surrounded by anthers.
The agamic gall is the familiar artichoke gall.
There are other small oval galls found on catkins - e.g. Andricus quadrilineatus and Neuroterus politus
Close examination of a specimen is needed; photos should show hairs.
Oak catkins
Spring
see Bladmineerders website
sue
Elmesthorpe Plantation
30 April 2025
sue
Oadby, Brocks Hill CP, oak avenue
28 April 2025
sue
Oadby, Brocks Hill CP, oak avenue
28 April 2025
backlit to show white hairs
sue
Oadby, Brocks Hill CP, oak avenue
28 April 2025
Leicestershire & Rutland Map
Enter a town or village to see local records
MAP KEY:
Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2025+ | 2020-2024 | pre-2020
UK Map
Species profile
- Common names
- Hairy-catkin Gall Causer
- Species group:
- Bees, Wasps, Ants
- Kingdom:
- Order:
- Family:
- Records on NatureSpot:
- 2
- First record:
- 28/04/2025 (Timms, Sue)
- Last record:
- 30/04/2025 (Timms, Sue)
Total records by month
% of records within its species group
10km squares with records
The latest images and records displayed below include those awaiting verification checks so we cannot guarantee that every identification is correct. Once accepted, the record displays a green tick.
In the Latest Records section, click on the header to sort A-Z, and again to sort Z-A. Use the header boxes to filter the list.