Thrigmopoeus trucelentus, from the western Ghats in India, was described way back in 1899, and fortunately, was redescribed in 2009.  See the 2009 article for details, including maps and photographs of habitat and specimens.
The photo above shows an adult female.
 Siliwal, M. & Molur, S. (2009a). Redescription, distribution and status of the Karwar large burrowing spider Thrigmopoeus truculentus Pocock, 1899 (Araneae: Theraphosidae), a western Ghats endemic ground mygalomorph. Journal of Threatened Taxa 1: 331-339.