Cerodontha iraeos

    Alternative names
    Iris Leaf-miner

    The larvae of the fly Cerodontha iraeos mine the leaves of Yellow Iris (Iris pseudacorus). The mine takes the form of an irregular corridor, essentially parallel to the leaf blade. The mine is white when seen from above. Frass in one, rarely more, big black lump. Larva solitary. 

    Identification difficulty

    Adult Leafmine photo showing mine held up to the light is required.

    Recording advice

    Unless identified by a recognised expert, a photo showing mine held up to the light 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.


    Wherever Yellow Iris is present.

    When to see it

    Mines might be encountered whenever Yellow Iris is in leaf.

    Life History

    Pupation occurs within the mine.

    UK Status

    Widespread and fairly frequent in Britain – though not well recorded.

    VC55 Status

    Status in Leicestershire and Rutland not known.

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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