Orchestes quercus


    A small weevil of just over 3.5 mm in length, it is chestnut brown coloured and hairy.  The larva mine the leaves of various oak species causing a leafmine. There is an oviposition scar in the midrib. The first part of the corridor follows the midrib, then runs towards leaf margin where it widens into a blotch. Frass in short threads attached to upper epidermis.

    Identification difficulty

    Adult Leafmine

    Recording advice

    Adult: Unless identified by a recognised expert, a photo is required and the specimen should be examined with a microscope. In the comments box, state the key or ID method used and describe the size and identifying characters.

    Leafmine: Unless identified by a recognised expert, photos are required showing the mine (preferably backlit to show frass) and oviposition scar.


    Areas where Oak is present.

    When to see it

    Mainly April to October.

    UK Status

    Widespread in Britain, particularly in central England and Wales.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland, but with fewer recent records.

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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