Allium Leaf Miner - Phytomyza gymnostoma

    Alt Name
    Onion Leaf Miner
    Description

    The greyish brown flies are 3mm long and show a pale yellow band on the lower abdomen.

    Similar Species

    There are other agromyzids that attack Allium species and identification requires detailed examination.

    Identification difficulty
    Habitat

    Gardens, allotments etc. where allium species such as leeks, onion, chives, shallot or garlic are grown.

    When to see it

    The adult fly is rarely seen unless reared from the pupae found within the bulbs and stems of affected plants.

    Life History

    The larvae mine various Allium species such as leeks, onion, chives, shallot and garlic producing lines of white spots on leaves. The larvae enter the stems and bulbs where they pupate.

    UK Status

    The greyish brown flies are 3mm long and show a pale yellow band on the lower abdomen.

    VC55 Status

    First recorded in Britain in 2002, by 2005 it was found to be widespread in the West Midlands, and is now believed to be widespread in central and southern England.

    Further Information

    Status in Leicestershire and Rutland not known.

    Leicestershire & Rutland Map

    UK Map