Phytomyza chaerophylli

    Description

    The larvae of the fly Phytomyza chaerophylli mine the leaves of umbelliferous plants such as Cow Parsley. The mines often follow the margin of the leaf at first, but the mined area can easily form a blotch that covers a wide area of the leaf. The mine is pale and frass occurs in two untidy rows of isolated grains. The mine is seen more frequently than the adult fly.

    Identification difficulty

    Adult Leafmine

    Habitat

    Where the host plants occur.

    When to see it

    Early spring to late autumn

    Life History

    See 'Description' section

    UK Status

    Thought to be common and widespread throughout Britain.

    VC55 Status

    Status in Leicestershire and Rutland not known.

    Leicestershire & Rutland Map

    UK Map