Orchestes signifer

    Alternative names
    Rhynchaenus avellanae
    Orchestes avellanae
    Description

    The larvae of the weevil Orchestes signifer mine the leaves of Oak creating a gallery along the edge of the leaf leading to a circular blotch, from which a case is cut leaving a round hole.  The adult weevil is black with white markings.

    Identification difficulty

    Adult Leafmine

    Recording advice

    Adult and Leafmine: Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.

    Habitat

    Areas where Oak is plentiful.

    When to see it

    Leafmines may occur once Oak is in leaf in early summer. Adults from April to early September.

    UK Status

    Widespread in the southern half of Britain become scarcer further north.

    VC55 Status

    Occasional in Leicestershire and Rutland although it may be under 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