Comments: | Separated from Presbytis by Hooijer (1962) and Groves (1989, 2001c). Includes subgenus Kasi (for T. vetulus group). Included in Semnopithecus by Brandon-Jones (1984, 1995); provisionally retained as a genus by Groves (2001c), but its monophyletic status is not confirmed. The species groups are: (1) T. vetulus group (vetulus, johnii), (2) T. cristatus group (auratus, cristatus, germaini, barbei), (3) T. obscurus group (obscurus, phayrei), (4) T. pileatus group (pileatus, shortridgei, geei), (5) T. francoisi group (francoisi, hatinhensis, poliocephalus, laotum, delacouri, ebenus). |