CommonWidespread and in woods in Eastern Europe.
Mostly in gardens and parks in UK, probably recently introduced in the west.
Very thin, pale and almost worm-like when fully extended.
Boettgerilla pallens Simroth 1912
Small to medium slug, extended length 3 – 4 cm. Pale translucent greyish-yellow, with keel from tip of tail right up to edge of the mantle; back and head darker bluish-grey. Very narrow, almost worm-like, when fully extended. Sole pale yellow, mucus colourless.