Truffle Gall - Andricus quercusradicis f. agamic
The agamic generation produce irregularly shaped truffle-like galls to 6 cm, the many chambers each with a single larva. These occur at the base of trunks or on shallow or exposed roots of Oak and are initially soft, becoming hard and woody.
Photograph the gall on oak, and note the host species
native oaks
rare/under-recorded
See British Plant Galls (Redfern & Shirley, 2023)
sue
Ulverscroft, brackeny hillside near Whitcrodt's Lane
25 April 2023
gall at base of oak tree
sue
Bagworth Heath CP, north of Sand-martin pond
12 May 2023
gall in leaf litter under young oak
sue
Swithland Wood, southern part
31 May 2023
in knot hole near base of oak
sue
Ulverscroft, brackeny hillside near Whitcrodt's Lane
25 April 2023
chambers inside gall, developing wasp grubs inside
sue
Ulverscroft, brackeny hillside near Whitcrodt's Lane
25 April 2023
sue
Groby, Lady Hay Wood, NE part
22 May 2023
in knot-hole near ground
sue
Bagworth Heath CP, north of Sand-martin pond
12 May 2023
sue
Bagworth Heath CP, north of Sand-martin pond
12 May 2023
old gall at base of young oak
sue
Bagworth Heath CP, north of Sand-martin pond
12 May 2023
section through old gall
sue
Bagworth Heath CP, north of Sand-martin pond
12 May 2023
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Species profile
- Common names
- Truffle Gall Causer
- Species group:
- Bees, Wasps, Ants
- Kingdom:
- Order:
- Family:
- Records on NatureSpot:
- 6
- First record:
- 25/04/2023 (Timms, Sue)
- Last record:
- 24/04/2025 (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.
Latest images
Latest records
sue
Swithland Wood, southern part
31 May 2023
sue
Bagworth Heath CP, north of Sand-martin pond
12 May 2023
sue
Ulverscroft, brackeny hillside near Whitcrodt's Lane
25 April 2023
c.3-4cm long
