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Hatinh langur
The Hatinh langur (''Trachypithecus hatinhensis'') is a highly threatened Old World monkey found in limestone forests in Vietnam, primarily in the Quảng Bình Province. A recent survey discovered a small population living in the Quảng Trị Province. Contrary to its name, it is not known from the Hà Tĩnh Province. The local Van Kieu minority refer to this lutung as the 'Con Cung', which roughly translates as "black, cliff-dwelling monkey with a long tail".〔(Vietnam survey team finds rare primate. ) BirdLife International news. Accessed 2008-07-15〕 It resembles the closely related François' langur (''T. francoisi''), but its white cheek-stripes typically extend behind the ears onto the nape (there are significant individual variations, however), and the overall black colour is non-glossy and has a brownish tinge.〔Nadler, T. (2010). ''Color variation in Hatinh langurs (Trachypithecus () hatinhensis).'' Vietnamese Journal of Primatology 4: 13-18.〕
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.〔Nguyen Manh Ha. 2006. ''Some Observations on the Hatinh langur, Trachypithecus laotum hatinhensis (Dao, 1970), in North Central Vietnam.'' Primate Concervation. 21: 149-154. (Available online (PDF) )〕 It has often been considered a subspecies of the François' langur, but was elevated to a full species by Bradon-Jones in 1995,〔Bradon-Jones, D. 1995. ''A revision of the Asian pied leaf monkeys (Mammalia: Cercopithecidae: Superspecies Semnopithecus auratus), with the description of a new subspecies.'' Raffles Bull. Zool. 43: 3-43〕 and this was followed by Groves, 2005.〔 Both, however, listed it as a subspecies in 2004,〔Bradon-Jones, D., A. A. Eudey, T. Geissmann, C. P. Groves, D. J. Melnick, J. C. Morales, M. Shekelle, and C. B. Stewart. 2004. ''Asian primate classification.'' International Journal of Primatology. 23: 97-164.〕 and genetic work suggest it should be considered a subspecies of the Laotian langur (''T. laotum'').〔Roos, C. 2004. ''Molecular evolution and systematics of Vietnamese primates.'' In: Nadler, T., U. Streicher, and Ha Thang Long (eds). Conservation of Primates in Vietnam: 23-28.〕〔Roos, C., T. Nadler, Y. P. Zhang, H. Zischler. 2001. ''Molecular evolution and distribution of the superspecies Trachypithecus ().'' Folia Primatol. 72: 181-182.〕 Morphological and genetic data also suggests the Indochinese black langur (''T. ebenus'') is a morph of the Hatinh langur.〔〔〔
==References==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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