Parornix betulae

    Alternative names
    Brown Birch Slender

    Wingspan 9 to10 mm. It cannot be separated from other Parornix species without dissection.

    Identification difficulty

    Adult Leafmine (refer leafmine records for confirmation before recording)


    Heaths and open woodland.

    When to see it

    The adults fly in May and August.

    Life History

    The larvae of this species initially create gallery mines in the lower epidermis of birch leaves, leading to a Phyllonorycter-type mine, but discoloured brown. The larvae later feed within downward folds, usually at the tip of the leaf, pupating in this site or on the ground. The mines can be found in June and again in September to October and are commonest on birch seedlings.

    UK Status

    Widespread and fairly frequent in Britain. In the Butterfly Conservation's Microlepidoptera Report 2011 this species was classified as common.

    VC55 Status

    It appears to be uncommon in Leicestershire and Rutland, where there are few records. L&R Moth Group status = D (rare or rarely recorded).

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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