Eriophyes similis

    Alternative names
    Eriophyes prunispinosa

    Gall mites are extremely tiny plant feeders, often around 0.5mm in size. They are members of the Arachnid group, which includes spiders and mites, and are small enough to pierce and feed on individual plant cells, causing the surrounding cells to enlarge and multiply to form the gall. The mite Eriophyes similis causes galls to form on the leaves of Prunus species, usually Blackthorn. The galls are usually heaviest around the leaf margins.

    Identification difficulty

    Adult Gall


    Around Blackthorn.

    When to see it

    Galls appear in May and are usually mature in August or September.

    UK Status

    Very common in many localities throughout England.

    VC55 Status

    Thought to be common in Leicestershire and Rutland.

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    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map