Trigonochlamydidae P. Hesse, 1882
The Trigonochlamydidae is a poorly-known family of slugs (Barker & Efford 2004) that mainly inhabits the Caucasus Mts. region (Barker & Efford 2004).
External: Mantle highly variable in size, ranging from a small pad on the central to mid-dorsum in Trigonochlamys to mostly covering the body in Boreolestes and Troglolestes; mantle on mid-dorsum to posterior; 3-part sole (Schileyko 2003; Barker & Efford 2004).
Internal: Thin, flat internal shell of carbonate granules on a layer of periostracum; little or no jaw; carnivore digestive tract (immense throat and buccal mass, short gut); barbed teeth in Troglolestes, Parmacellilla, and Selenochlamys; jaw delicate, crescentic when present; penis with a few internal pilasters; instead of spermatophore are 1-4 ampulae (that release sperm contents without detaching) on a large penial pilaster; penis without internal verge and with sheath around base; long, thin atrium attached by muscles to body wall (Schileyko 2003; Barker & Efford 2004).
Usually <30 mm long (Barker & Efford 2004).
High mountains of Caucasus Mts., Pont Mts. (Turkey), Elburs Mts. (N Iran) (Schileyko 2003).
Alpine zone of mountains (Schileyko 2003).
Carnivorous (Schileyko & Kijashko 1999).