Truffle Gall

Truffle Gall - Andricus quercusradicis f. agamic

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Description

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.

Identification difficulty

Recording advice

Photograph the gall on oak, and note the host species

Habitat

native oaks

VC55 Status

rare/under-recorded

Further Information

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
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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