The body is generally dark with relatively dense covering of red hair on the abdomen and legs compared to the more sparse red hairs in T. schroederi, which this species resembles.

T. kahlenbergi is distinguished from all other species in the genus by the arrangement of the sigilla on the sternum, and by possessing two spines, rather than one, on the prolateral tibial apophysis.

[2] In November 2019, it was proposed that Brachypelma kahlenbergi be moved to the new genus Tliltocatl; this has been accepted by the World Spider Catalog.

[1] Tliltocatl kahlenbergi was described from specimens in captivity, reported to be collected from around Veracruz, Mexico.

[2] All species of Brachypelma, then including Tliltocatl, were placed on CITES Appendix II in 1994, thus restricting trade, although T. kahlenbergi had not been described then and is not explicitly listed.