Lehmannia marginata (Müller, 1774)
L. marginata is able to rappel down a mucus thread, particularly when young.
Slugs emerges to climb tree trunks in wet weather (Quick 1960).
When perturbed, they release copious mucous in defense (Kerney & Cameron 1979).
Lehmannia valentianus, L. islandicus, L. janetscheki, L. rupicola, young Limax maximus.
External: Short, pale keel; pale gray to yellow; three dark lines on mantle, center line indistinct; two dark bands (maybe broken into spots) on tail/dorsum, forming a lyre shape on the mantle; translucent skin; clear mucus, releases lots of watery mucus when perturbed; gray-white sole (Quick 1960; Kerney & Cameron 1979; Abbes et al. 2010).
Internal: Thin, oval internal shell 4 x 2.75 mm, white and shiny; dark visceral cavity; big ovotestis with pigmentation, pale hermaphrodite duct, large and dark male portion of spermoviduct; conical flagellum on end and side of penis, with vas deferens on other side; internal fold and "comb" at the end of penis (Quick 1960).
Similar to young L. maximus, but has stripes on the mantle and is translucent; similar to L. valentianus but L. valentianus is yellowish and paler, higher dorsal lines, differences in genitalia (Kerney & Cameron 1979); similar to Alpine endemics L. rupicola and L. janetscheki (internally different) and Icelandic L. islandicus (Kerney & Cameron 1979)
Eggs - 4.3 x 3.6 mm, translucent, amber (Quick 1960)
Juveniles - 10 mm long, light translucent gray, purplish tentacles, lyre banding on mantle, and bands on top of dorsum at hatching (unlike young L. maximus) (Quick 1960).
50-80 mm long when extended (Kerney & Cameron 1979); preserved: to 56 mm long, 12 mm wide, mantle 18 mm long (WIktor 1996).
Native in: Europe north to N Scandanavia, east to Russia, south to Italy, and N Africa (Quick 1960; Abbes et al. 2010).
Non-native in: Japan (Azuma 1982), Australia, and New Zealand (Quick 1960).
Forests and open ground; take shelter under bark of dead logs or damp rocks on clay soil (Kerney & Cameron 1979; Abbes et al. 2010); when available, occur on vertical rocks or live tree trunks, especially beech and hornbeam (Cameron 1978; Wiktor 1996).
Lives to 3 years, maturing during year 2 (Wiktor 1996).
Feeds on live plants, wood (Jennings & Barkham 1975), lichen (Asplund et al. 2009; Cook & Radford 1988).