S.pallida is a slug adapted to preying on earthworms (Schütt 2010).
External: Small slug with a vermiform body; white to dark gray body; very small, light yellow, concave mantle at the posterior end of the body; slight horseshoe-shaped groove in mantle; 3 parallel longitudinal grooves along dorsum; polygonal skin wrinkles; strong keel on tiny tail after the mantle; light brown sole (Schütt 2010).
Internal: Tiny, rhomboid, uncalcified internal shell; no jaw; hooked radular teeth arranged in a semi-circle; massive pharynx and esophagus taking up much space in the body; spindle-shaped penis; cylindrical spermatheca without duct; long, thin atrium (Schütt 2010).
To 30 mm long extended; preserved: to 18 mm long, 6 mm wide and spindle-shaped (Schütt 2010). .
W Georgia, Abkhazia, Adygea (Likharev & Schileyko, MS; in Sysoev & Schileyko 2009); N Turkey (Schütt 2010).
In earthworm burrows in the soil (Schütt 2010).
Earthworms (Schütt 2010).