Dusky Slug Arion subfuscus
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Length 50 to 70 mm
This slug comes in various shades of yellows and browns. An important identification feature is the body mucus which stains orange on your finger (stroke the tail end). The body contracts to an elongate dome. It usually has two dark lateral bands, fairly high on the body. The sole is pale and the sole fringe blends in with the body.
Common in most parts of Britain and Ireland but scarce in E England. Favours woodland and hedgerows but also found in gardens. Body pale brown but dark on dorsal surface and with single longitudinal dark stripe on each side. Often looks golden due to orange body mucus. Sole yellow but sole mucus colourless.
Habitat Various well vegetated areas, including woodland and grassland.
By Erik Veldhuis; modified by Tom Meijer [GFDL or CC-BY-SA-3.0], via Wikimedia Commons
By Michal Manas (snek01) (Own work) [CC BY 2.5], via Wikimedia Commons