Green Cellar Slug Limacus maculatusis
The Green Cellar Slug is native to the Black Sea region of Eastern Europe and the Caucasus.
It spread through the UK in the 1970s, mainly in gardens/compost heaps, often displacing the similar Yellow Cellar Slug,
L. flavus, which itself had colonised the UK three centuries earlier.
Raiding seeds from humane mouse trap.
Several raiding humane mouse trap in aviary.
Could this one be a Yellow Cellar Slug?
Both the Green and the Yellow Cellar Slugs look similar and reach 8-13cm long (they can hybridise).
The Green often has a more blotched appearance and doesn't have the thin, central yellow line from mantle to tail of the Yellow.
Both are beneficial to gardens since they rarely, if ever, eat live plants. They are nature's dustbins,
eating dead leaf and plant litter, animal debris (including faeces), mould and algae.