Chirosia grossicauda

    Description

    The larvae of the fly Chirosia grossicauda causes galls to form on Bracken fronds. The tip of the pinnule (involving a few pinnules) rolls downwards and may discolour, inside a white maggot mines along the main vein.

    Identification difficulty

    Adult Gall

    Habitat

    Wherever Bracken is present.

    When to see it

    August to October.

    UK Status

    Widespread and fairly frequent in Britain.

    VC55 Status

    Status in Leicestershire and Rutland not known.

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map