Trigonochlamys (Trigonochlamys) imitatrix O. Boettger, 1881
Trigonochlamys imitatrix is a carnivorous slug of the Caucasus Mts.
External: Thin, spindle-shaped body that becomes cylindrical when moving; black body with a bluish tint; radial skin grooves extending out from mantle; fine skin sculpture with pigment in the grooves; mantle small, triangular-ovate, and in the center of the dorsum; pneumostome post-medial on mantle; horseshoe-shaped groove slightly behind middle of dorsum; strong keel on tail behind the mantle and weaker keel between mantle and head; 3-part sole with light brown middle section (Schileyko 2003; Schütt 2010).
Internal: Internal shell ovate, ~6 mm long; dagger-shaped radular teeth; fine, rudimentary jaw; large pharynx (throat) between mantle and head, with 6-8 pairs of retentor muscles; vas deferens and penial retractor muscle attached to apex of short epiphallus; large, tubular penis containing 1-2 longitudinal pilasters; light brown ampullae attached to pads inside upper penis; sheath around lower half of penis; cylindrical spermatheca; short vagina; long, thin atrium (Schileyko 2003; Schütt 2010).
Juveniles: Light brown (Schütt 2010).
To 100 mm long extended, 10 mm wide (Schütt 2010); contracted body to 38 mm long (Schileyko 2003). .
Caucasus Mts. (Georgia, Armenia, Azerbaijan, Iran) (Schütt 2010) and nearby parts of NE Turkey (Pontic Mts.) (Schileyko 2003).
Mountain forests, often in subtropics (Akramowski 1976; Likharev & Schileyko, MS; in Sysoev & Schileyko 2009); moist, shady habitats; in leaf litter, under logs, under tree bark (Schütt 2010).
Hunts earthworms (Schütt 2010).