Neottiophilum praeustum


    This is a shining orange fly with a spinose costa. It is about 9 mm long. The wings are marked with dark 'shades' particularly at the wing tip.

    Identification difficulty
    Recording advice

    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.


    Various habitats in search of suitable birds' nests for their larva.

    When to see it

    May and June.

    Life History

    This distinctive fly is sometimes called the Nest Skipper Fly. The larvae are parasites of birds, sucking the blood of nestlings. It has been found in nests of House Sparrows (Passer domesticus) as well as other species including various finches.

    UK Status

    Very few British records have been entered, mostly from southern England.

    VC55 Status

    Uncommon in Leicestershire and Rutland

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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