This diurnal, largely arboreal langur is social and typically seen in groups of 2-15, but occasionally groups may number as many as 30 individuals. It has often been considered a subspecies of the François' langur, but was elevated to a full species by Bradon-Jones in 1995, and this was followed by Groves, 2005. Both, however, listed it as a subspecies in 2004, and genetic work suggest it should be considered a subspecies of the Laotian langur (T. laotum). Morphological and genetic data also suggests the Indochinese black langur (T. ebenus) is a morph of the Hatinh langur. Learn more about Hatinh Langur