L. marginatus, L. nyctelius .
External: Thin-bodied; white body with dark flecks, sometimes forming bands; two bands on sides of mantle, joining at the posterior, and on sides of body; pale keel, sole, and foot fringe; mucus clear (Kerney & Cameron 1979).
Internal: Short penis; long, tapering flagellum at least as long as penis; spermatheca much longer than penis (Kerney & Cameron 1979).
Must be distinguished from L. marginatus through internal anatomy; also similar to L. nyctelius (Kerney & Cameron 1979).
40-50 mm long extended (Kerney & Cameron 1979).
Carpathian Mountains, including the countries Poland, Czech Republic, Slovak Republic, Ukraine, and E Germany (Kerney & Cameron 1979; Falkner et al. 2001; Likharev & Schileyko, MS: in Sysoev & Schileyko 2009).
Mountain forests, generally above 900 m; under rocks above treeline (Likharev & Schileyko, MS: in Sysoev & Schileyko 2009).