Aceria ilicis

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    Description

    Aceria ilicis is a mite which causes felt galls to form on the leaves of Holm Oak. The upperside of the leaf may have a bulge about 2 to 3mm high, with a corresponding depression on the underside with a rusty brown erineum; usually several galls on a leaf; mites live amongst the hairs. The gall is seen more readily than the mite.

    Identification difficulty
    Habitat

    On the leaves of Holm Oak.

    When to see it

    All year round.

    UK Status

    Seems to be fairly frequent but under recorded in Britain.

    VC55 Status

    Little recorded but probably fairly frequent in Leicestershire and Rutland.

    • Maggie Frankum
      University of Leicester Botanic Garden, Oadby
      20 March 2014
      Aceria ilicis mite gall on Holm Oak, upper leaf surface
    • Maggie Frankum
      University of Leicester Botanic Garden, Oadby
      20 March 2014
      Aceria ilicis mite gall on Holm Oak, lower leaf surface

    Leicestershire & Rutland Map

    UK Map