Vulgar Slug - Arion vulgaris sensu stricta

    Alt Name
    Spanish Slug

    There are three species in this complex (Arion ater group): Arion ater, Arion rufus and Arion vulgaris. These slug species range from 75 to over 150 mm in length at maturity. They may be dark brown, black, orange or reddish in colour. They are large and bulky with long, course tubercles on the side and back.

    Similar Species

    Arion ater and Arion rufus

    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.


    Gardens, greenhouses and other fairly moist, well vegetated sites.

    When to see it

    All year. 

    Life History

    Diet includes living and dead plant material, fungi etc.

    UK Status

    Widespread in Britain.

    VC55 Status

    Status in Leicestershire and Rutland not known.

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map