Fauna - Molluscs - Native
Common and widespread throughout Scotland and the UK.
Occurs in most terrestrial habitats, including grasslands, hedgerows and woodlands.
There are two closely-related species - Arion rufus and Arion lusitanicus - but they can only be distinguished from the black slug by dissection. However, those other species are only found in southern UK so when on Mull it is relatively easy to identify Arion ater.
This page last updated on 18 Jan 2015