Dolerus stygius

    Alt Name
    Dolerus megapterus

    This is one of several very similar dark coloured Dolerus species and detailed examination is necessary in order to identify them to species level.

    Identification difficulty

    Damp areas, fens, marshes and similar areas where sedges occur.

    When to see it

    April and May.

    Life History

    The larvae are associated with sedges.

    UK Status

    Infrequent in Britain. Up until the 1950s Dolerus stygius was only known for sure from a few sites in the Highlands of Scotland. It has been recorded much more widely in the last decade or so with sparse scattered records from northern England and as far south as Surrey and Wiltshire.

    VC55 Status

    Rare or under recorded in Leicestershire and Rutland. The Broughton Astley specimen of 27th April 2015 is believed to be the first record of this species in VC55.

    Leicestershire & Rutland Map

    MAP KEY:

    Yellow squares = NBN records (all known data)
    Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

    UK Map