Mouse Spider - Scotophaeus blackwalli


    Approximately 9 to 12 mms long. The Mouse Spider gets its name from the grey coloured abdomen which is covered in tiny hairs and resembles mouse fur. 3 dorsal spines on femur III & IV.

    Similar Species

    Scotophaeus scutulatus (rare) - 2 dorsal spines (proximal and median, no distal spine) on femur III & IV.

    Identification difficulty
    ID guidance

    A clear photo showing the spines on the upper surface of femur III &/or IV is required.


    In southern Britain they are found in gardens and houses. In the north they are found mainly indoors.

    When to see it

    All year, more frequently in summer and autumn.

    Life History

    This species does not create a web, instead it wanders about in search of prey - usually at night. It is an ambush predator that feeds on small insects.

    UK Status

    Widespread and fairly common in England and Wales, fewer records from Scotland.

    VC55 Status

    Fairly common in Leicestershire and Rutland.

    Further Information

    942 British records to Jan 2013

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map