| Arion, Molluscs, Gastropods, Arionidae, Arion silvaticus|
Arion flagellus, also known by its common name (in the United Kingdom) the "Durham slug", is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the roundback slugs.
Arion flagellus Wikipedia
This species is endemic to the Iberian peninsula, but has been introduced in various countries and islands including:Great Britain
and other areas