Andricus quercuscorticis

Description

Andricus quercuscorticis is a gall wasp that causes galls on native oaks.

The agamic galls are ovoid; they occur in clusters and are embedded in the bark on the tree-trunk; eventually only the empty galls or sockets persisting. They are usually found in callus tissue that forms around wounds on the main trunk.

The sexual galls are in buds.

Similar Species

The agamic barnacle galls (Andricus sieboldii and testaceipes) also form on tree trucks, usually close to the ground, but are conical and ridged.

Identification difficulty

Agamic gall Sexual gall Adult

Habitat

Where the host oak trees are found.

When to see it

Galls form in May but the sockets persist.

UK Status

Widespread and may be locally frequent, but it is under recorded in Britain.

VC55 Status

Fairly frequent in Leicestershire and Rutland.

Leicestershire & Rutland Map

MAP KEY:

Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map

Species profile

Species group:
Bees, Wasps, Ants
Kingdom:
Animalia
Order:
Hymenoptera
Family:
Cynipidae
Records on NatureSpot:
12
First record:
06/09/2014 (Frankum, Maggie)
Last record:
26/02/2024 (Horrell, Catherine)

Total records by month

% of records within its species group

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