Opilio canestrinii


    Males reach a body length of up to 6 mm, females up to 8 mm and both have very long legs. While males are orange/ red in body colour, the body colour is lighter in females but all have at least some orange colouration, usually along a broad mid-dorsal band. Both sexes have dark legs and usually with distinctive yellowy orange coxae.

    Identification difficulty

    It is often found in gardens and around houses and is an invasive species.

    When to see it

    Adults can be found from June up to December.

    Life History

    The species is an invader that is quickly colonising Britain. It was first seen in the Uk in October 1999 beside a reservoir in the Lea Valley, Essex. The species has been expanding northwards from Italy, austria and Switzerland. Where it is has colonised Denmark and Germany, it has displaced the other two species of Opilio so this may also happen here.

    UK Status

    This species has become more widespread and common in Britain.

    VC55 Status

    Common 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