Artichoke Gall - Andricus foecundatrix f. agamic
The agamic (asexual) galls are large artichoke galls formed in oak buds - much enlarged (up to 30mm long) and covered with overlapping bud scales. There is a cavity inside containing the the inner gall which is ejected in late summer, leaving the old galls to persist with the bud scales opened out and brown.
[Note: The sexual generation of galls are in the catkins and are small and covered in long white hairs.]
Photograph the gall on oak, and note the host species
native oak trees
common
See British Plant Galls (Redfern & Shirley, 2023)
sue
Burbage Common
28 July 2023
gall on oak
Kate Nightingale
Ulverscroft NR
06 September 2017
old gall on oak
Catherine Horrell
Staunton Harold
27 July 2023
Catherine Horrell
Staunton Harold
07 September 2024
egaten
Bagworth Heath
05 August 2022
Chris Conway
Oakthorpe Colliery
18 August 2021
Graham Fisher
Poultney Wood
06 August 2023
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Yellow squares = NBN records (all known data)
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Species profile
- Common names
- Artichoke Gall Causer
- Species group:
- Bees, Wasps, Ants
- Kingdom:
- Animalia
- Order:
- Hymenoptera
- Family:
- Cynipidae
- Records on NatureSpot:
- 219
- First record:
- 03/09/2010 (Calow, Graham)
- Last record:
- 18/10/2025 (Graves, Hazel)
Total records by month
% of records within its species group
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Latest images
Latest records
egaten
Beacon Hill
11 August 2023
Graham Fisher
Bagworth Heath Country Park
17 September 2021
