Vietnam Primate Conservation Status Review 2002 - Hoang Lien ...

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3 2 1 5 4 1. Grey langur; infant female, one year old. T. Nadler 2. Grey langur; ad. female with infant female three weeeks old. T. Nadler 3. Grey langur; photo trapping. B. Long (SFNC/FFI) 4. Grey langur; infant female one year old. T. Nadler 5. Grey langur; ad. male. T. Nadler
3.5 Grey langur Trachypithecus crepusculus (Elliot, 1909) 3.5.1 Taxonomy 3.5 GREY LANGUR - Trachypithecus crepusculus A grey langur from Mount Muleiyit, Burma was described as Presbytis crepuscula by Elliot (1909). Because of its similar colouration to the Phayre’s langur, also described for Burma as Presbytis phayrei (Blyth, 1847), the taxa was placed subsequently as a subspecies to this langur in the revised genera systematic as Semnopithecus phayrei crepuscula (Corbet & Hill, 1992) or Trachypithecus phayrei crepusculus (Eudey,1996/1997; Wang Yingxiang et al., 1998; Groves, 2001). Over the large area where Phayre’s langurs occur, they show a wide variation in pelage colouration, and three (Groves, 2001) to five (Eudey, 1996/1997) subspecies have been recognized. But the relationship between the taxa belonging to the obscurus/phayrei group with very similar colouration was disputed (Osgood, 1932; Brandon-Jones, 1984; Lekagul & McNeely, 1988). Recent DNA investigation (see 2.3; Roos et al., 2001) cleared up the relationship of the Vietnamese taxon and identified this langur unambiguously as a distant relative of the francoisi group and not as a Phayre’s langur subspecies. Based on the Vietnamese common name for this species we propose to use the name Grey langur. 3.5.2 Description The body and tail are light grey, the belly is slightly brighter and silvery grey. The forehead, cheeks and hair around the face are brown. Hands and feet are dark grey. The grey color on the hands changes along the forearms to the light grey of the body. The tail ends with a thin tassel. The head has no crest on the crown but long hairs in a whorl. The bare skin of the face is dark grey, except the light grey rings around the eyes and depigmented patches in the middle of the upper and lower lips. External measurements (adult) n mm average Source Head/Body length male 1 510 510 EPRC female 1 490 490 EPRC Tail length male 1 830 830 EPRC female 1 822 822 EPRC Weight kg male 1 6,9 6,9 EPRC female 1 6,4 6,4 EPRC 3.5.3 Distribution The Grey langur is distributed from central Thailand to north-west Thailand and south Yunnan, east to southwest Laos and northern Vietnam, and west to the coast of the Bay of Bengal, south of the range of Trachypithecus p. phayrei (Groves, 2001) 91
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Tilo Nadler - Frank Momberg - Nguye
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THE DESIGNATION OF GEOGRAPHICAL ENT
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iv 3.4 Delacour’s langur (Trachyp
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vi Acknowledgement Fauna & Flora In
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viii Abbreviations Key to abbreviat
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Red-shanked douc langurs; group of
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Vietnam Primate Conservation Status
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3 2 1 4 1. Indochinese Silvered lan
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3. Langurs
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3. Langurs 3.0 An introduction to t
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The basic social organisation for t
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3.1 Francois’ langur
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3.1 Francois’ langur Trachypithec
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DISTRIBUTION OF FRANCOIS' LANGUR (T
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3.1 FRANCOIS’ LANGUR - Trachypith
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Page 43 and 44: Discussed records Quang Ninh Provin
Page 45: 3.1 FRANCOIS’ LANGUR - Trachypith
Page 48 and 49: 2 3 6 1 4 5 1. Hatinh langur; ad. m
Page 50 and 51: Vietnam Primate Conservation Status
Page 58 and 59: 1 2 3 4 1. Cat Ba langur; ad. femal
Page 71 and 72: 3.4. Delacour’s langur
Page 73 and 74: 3.4 Delacour’s langur Trachypithe
Page 75 and 76: 3.4 DELACOUR’S LANGUR - Trachypit
Page 77 and 78: 3.4.4 Delacour’s langur records 3
Page 83 and 84: Locations where Delacour’s langur
Page 85 and 86: 3.4.5 Status 3.4 DELACOUR’S LANGU
Page 87 and 88: 3.4.6 Recommendations for conservat
Page 91: 3.5. Grey langur
Page 95 and 96: Distribution in China 3.5 GREY LANG
Page 97 and 98: 3.5 GREY LANGUR - Trachypithecus cr
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Page 101 and 102: Vu Quang National Park (HA TINH) Sp
Page 103 and 104: Ha Tay Province 20 O 34’-21 O 17
Page 105 and 106: 3.6. Indochinese Silvered langur
Page 107 and 108: 3.6 Indochinese Silvered langur Tra
Page 109 and 110: 3.6 INDOCHINESE SILVERED LANGUR - T
Page 115 and 116: 4.0. Douc langurs
Page 117 and 118: 4. Douc langurs 4.0 An introduction
Page 119 and 120: 4 DOUC LANGURS Groups are character
Page 121 and 122: 4.1.2 Black-shanked douc langur Pyg
Page 123 and 124: 4 DOUC LANGURS DISTRIBUTION OF RED-
Page 125 and 126: 4 DOUC LANGURS DISTRIBUTION OF BLAC
Page 127 and 128: 4 DOUC LANGURS One infant skull (IE
Page 129 and 130: 4 DOUC LANGURS Bach Ma National Par
Page 131 and 132: 4 DOUC LANGURS My Town and Ro Villa
Page 133 and 134: 4 DOUC LANGURS very poor secondary
Page 135 and 136: A Yun Pa Nature Reserve (GIA LAI) S
Page 137 and 138: Krong No District (DAK LAK) Special
Page 139 and 140: 4 DOUC LANGURS The Ra Glai minority
Page 141 and 142: Dinh Quan District (DONG NAI) Speci
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4 DOUC LANGURS Obviously there are
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4 DOUC LANGURS ✱ The establishmen
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2 3 1 1. Tonkin snub-nosed monkey;
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DISTRIBUTION OF TONKIN SNUB-NOSED M
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5 2 3 1 4 6 1. Hunters with living
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7.0. Conservation Policy
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7. Conservation policy 7.1 Hunting
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The aims of an ex-situ programme sh
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7 CONSERVATION POLICY Table 7.4-1 R
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8. References 8 REFERENCES Adler, H
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8 REFERENCES Boonratana, R., and Le
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8 REFERENCES Dao Van Tien. 1970. Su
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8 REFERENCES Fooden, J. 1976a. Prov
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8 REFERENCES Hill, W. C. O. 1934. A
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8 REFERENCES Le Khac Quyet and Trin
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8 REFERENCES Lippold, L. K. 1995a.
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Monestrol, H. (ed.). 1952. Chasses
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8 REFERENCES Ngo Van Tri. 1999b. Th
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8 REFERENCES Pham Nhat, Nguyen Xuan
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8 REFERENCES Simonetta, A. 1957. Ca
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8 REFERENCES Vermeulen, J. and Whit
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Appendix 1 Leaf monkey species in t
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Appendix 2 Selected areas of high v
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8 APPENDIX: 2 the surrounding area
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8 APPENDIX: 2 Forests in the southe
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Ke Go Nature Reserve (HA TINH) Spec
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8 APPENDIX: 2 was decreed with a to
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8 APPENDIX: 2 Elevation: reaching 1
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8 APPENDIX: 2 regeneration of everg
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Appendix 3 IUCN RED LIST CATEGORIES
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EXTINCT (EX) A taxon is Extinct whe
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B Extent of occurrence estimated to
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D Population estimated to number le
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The Primate Conservation Status Rev
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