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

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2 3 1 4 1. Francois' langur group. T. Nadler 2. Francois' langurs. N. Rowe 3. Francois' langur; ad. female. T. Nadler 4. Francois' langur; infant, five weeks old. T. Nadler
3.1 Francois’ langur Trachypithecus francoisi (Pousargues, 1898) 3.1.1 Taxonomy 3.1 FRANCOIS’ LANGUR - Trachypithecus francoisi Trachypithecus francoisi was first described by Pousargues (1898) from a specimen collected in southern Guangxi Province, China (22°24’N / 106°59’E). Six other taxa, each with a different pattern of white, grey or yellowish on a generally black or dark brown coat, have in the past usually been referred to as subspecies and formed the francoisi group. They include the Cat Ba langur, Delacour’s langur, Whiteheaded langur, Hatinh langur, Lao langur and Black langur. Brandon-Jones (1984) argued that some of these taxa were distinctive at the species level. Studies in the field and in captivity (Nadler, 1994, 1995c, 1997b), genetic research (see 2.3, Roos, 2000; Roos et al., 2001) and parasitological findings (Mey, 1994) strongly suggest that some taxa, in the past usually defined as francoisi are distinct species. Groves (2001) listed all taxa as distinct species. Hence, this section refers to francoisi as a monotypic taxon. 3.1.2 Description The pelage is glossy-blackish and only a narrow tract of slightly elongated white hair runs from the corner of mouth along the side of the face to the upper edge of ear pinna. There is a tall pointed crest on the crown of the head. The hair of the lateral parts of the body is long. Females have a depigmented pubic patch clothed with white to yellowish hairs. Information about an all-black form without white cheeks is known from several areas where francoisi occur (Ratajszczak, 1990; Ratajszczak cit. in Brandon-Jones, 1995; B. Martin, pers. comm.; T. Nadler, pers. comm.). It is very unlikely that a second taxon exists widespread sympatrically with francoisi. Probably there are occasionally melanistic individuals like the melanistic morph “ebenus” in T. laotum hatinhensis. Observations in an area allegedly with the all-black form (s. locality Binh An Village, Chiem Hoa District, Tuyen Quang Province) and the fact that no specimen of the all-black form exists support the assumption that the all-black form is merely an incomplete observation. Langur sightings are mostly made close to the sleeping sites at dusk or dawn, and recognizing the white cheeks is often hardly possible. External measurements (adult) n mm average Source Head/Body length male 4 510-635 565 Brandon-Jones, 1995 female 3 590-670 623 Brandon-Jones, 1995 Tail length male 4 805-900 863 Brandon-Jones, 1995 female 3 830-900 877 Brandon-Jones, 1995 Weight kg male 11 6,4-7,85 7,05 Mei Qu Nian, 1998 female 1 7,2 Brandon-Jones, 1995 8 5,5-7,9 6,69 Mei Qu Nian, 1998 ? 2 6,5/7,2 Dao Van Tien, 1985 33
Page 1: Tilo Nadler - Frank Momberg - Nguye
Page 4 and 5: THE DESIGNATION OF GEOGRAPHICAL ENT
Page 6 and 7: iv 3.4 Delacour’s langur (Trachyp
Page 8 and 9: vi Acknowledgement Fauna & Flora In
Page 10 and 11: viii Abbreviations Key to abbreviat
Page 12 and 13: Red-shanked douc langurs; group of
Page 14 and 15: Vietnam Primate Conservation Status
Page 18 and 19: 3 2 1 4 1. Indochinese Silvered lan
Page 27 and 28: 3. Langurs
Page 29 and 30: 3. Langurs 3.0 An introduction to t
Page 31 and 32: The basic social organisation for t
Page 33: 3.1 Francois’ langur
Page 37 and 38: DISTRIBUTION OF FRANCOIS' LANGUR (T
Page 39 and 40: 3.1 FRANCOIS’ LANGUR - Trachypith
Page 41 and 42: 3.1 FRANCOIS’ LANGUR - Trachypith
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 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
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3.4.5 Status 3.4 DELACOUR’S LANGU
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3.4.6 Recommendations for conservat
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3.4 DELACOUR’S LANGUR - Trachypit
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3.5. Grey langur
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3.5 Grey langur Trachypithecus crep
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Distribution in China 3.5 GREY LANG
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3.5 GREY LANGUR - Trachypithecus cr
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3.5 GREY LANGUR - Trachypithecus cr
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Vu Quang National Park (HA TINH) Sp
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Ha Tay Province 20 O 34’-21 O 17
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3.6. Indochinese Silvered langur
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3.6 Indochinese Silvered langur Tra
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3.6 INDOCHINESE SILVERED LANGUR - T
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4.0. Douc langurs
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4. Douc langurs 4.0 An introduction
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4 DOUC LANGURS Groups are character
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4.1.2 Black-shanked douc langur Pyg
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4 DOUC LANGURS DISTRIBUTION OF RED-
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4 DOUC LANGURS DISTRIBUTION OF BLAC
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4 DOUC LANGURS One infant skull (IE
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4 DOUC LANGURS Bach Ma National Par
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4 DOUC LANGURS My Town and Ro Villa
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4 DOUC LANGURS very poor secondary
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A Yun Pa Nature Reserve (GIA LAI) S
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Krong No District (DAK LAK) Special
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4 DOUC LANGURS The Ra Glai minority
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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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Vietnam Primate Conservation Status
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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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