Eriophyes pyri

    Description

    Eriophyes pyri is a tiny mite that causes galls to form on the leaves of Rowan and other members of the rose family, including cultivated pear trees. The gall is seen more often than the mite which causes domed pustules on both leaf surfaces - green/yellow at first but turning brown.

    Habitat

    On the leaves of Rowan and pear trees.

    When to see it

    Galls are visible from late spring or summer until autumn.

    Life History

    The mites escape from the gall through pores on either side of the leaf to pass the winter in bark crevices.

    UK Status

    Widespread and common in Britain.

    VC55 Status

    Common in Leicestershire and Rutland.

    Leicestershire & Rutland Map

    UK Map