Demon Shrimp - Dikerogammarus haemobaphes

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    Description

    Up to 18 mm long. All Gammarus species require detailed examination for a safe id.

    Identification difficulty
    Habitat

    Freshwater habitats, including rivers, canals and reservoirs.

    When to see it

    All year round.

    Life History

    The presence of this non-native species may result in marked ecological change, leading to decreased diversity in the invaded range by competing with or preying upon a broad range of invertebrates.

    UK Status

    First recorded in Britain in 2012, but widespread distribution across Midlands and Thames Valley suggests it had been present for some time previously.

    VC55 Status

    Status in Leicestershire and Rutland not known.

    • JamesCalow
      Stanford Reservoir
      25 October 2016
    • JamesCalow
      Stanford Reservoir
      25 October 2016
      conical projections of 2 spines anterior <br /> with ring of setae

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map