Andricus glandulae


    The agamous generation of the cynipid gall wasp Andricus glandulae galls the axillary leaf bud of various Oak species.  The bud is transformed into a pear shaped gall about half a cm high and often coloured red. The gall has a cover of long, white or violet, adpressed hairs that are directed downwards. It is mainly seen on young shoots.

    Identification difficulty

    Adult Gall

    Recording advice

    Adult: Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.


    Where the host Oak species are present.

    When to see it

    Galls may be encountered in late summer and early autumn.

    UK Status

    True status in Britain is difficult to determine due to lack of records.

    VC55 Status

    Status in Leicestershire and Rutland not known.

    be our species champion

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map