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

3.6 INDOCHINESE SILVERED LANGUR - Trachypithecus germaini
A feasibility study was conducted by FIPI to establish Kong Cha Rang Nature Reserve in April 1999
(Le Trong Trai, 1999b). One skull was seen by the team in a hunters’ house. The animal was reported
to have been shot in Tram Lap Forest Enterprise, between Kong Cha Rang and Kon Ka Kinh Nature
Reserves (Le Trong Trai, pers. comm., 2000).
Cu M’lan, Ea Sup District (DAK LAK)
Special use forest: None
Indochinese Silvered langur status: Occurrence confirmed, last evidence in 1997 (Le Xuan Canh et
al., 1997a)
One group of about eight Indochinese Silvered langurs was seen near the Dak Rue River in June
1997 during a survey conducted by IUCN and WWF for large mammals (Le Xuan Canh et al., 1997a).
The species was not recorded by BirdLife and IEBR during a survey for the green peafowl in the area
from March to May 1998 (Brickle et al., 1998).
Yok Don National Park (DAK LAK)
Special use forest: National park
Indochinese Silvered langur status: Occurrence confirmed, last evidence in 1997 (Le Xuan Canh et
al., 1997a)
Indochinese Silvered langurs are reported, based on indirect evidence (no further details are given),
during an elephant survey carried out by WWF in February-March 1992 (Dawson et al., 1993). One
group of at least four individuals was seen on the summit of Yok Don Hill in May 1997 during a
survey conducted by IUCN and WWF for large mammals (Le Xuan Canh et al., 1997a). This locality is
not reported as holding Indochinese Silvered langur in a survey for green peafowl by BirdLife and
IEBR in March to May 1998 (Brickle et al., 1998).
Cu Jut District (DAK LAK)
Special use forest: partly included in proposed extension of Yok Don National Park
Indochinese Silvered langur status: Occurrence confirmed, last evidence in 1999 (Ngo Van Tri &
Trinh Viet Cuong, 2000)
FFI conducted two elephant field surveys in the district. In December 1999, one group of at least 3
animals were seen in secondary evergreen forest in the western part of the district (12 O 44’47.7”N /
107 O 44’35.5”E) between 300 and 400 m a.s.l. (Trinh Viet Cuong & Ngo Van Tri, 1999). In April 2000,
one group of 5 animals, including one infant with an orange/ yellow coat, was seen in semi-evergreen
forest near the first record (12 O 45’09” N / 107 O 44’42”E) (Ngo Van Tri, 2000).
Da Lat Plateau (DAK LAK, LAM DONG, KANH HOA and NINH THUAN)
Special use forest: Partly included in Chu Yang Sinh and Bi Dup-Nui Ba Nature Reserves
Indochinese Silvered langur status: Unknown, last report in 1908 (museum specimen)
One juvenile male (BMNH 1908.11.1.5) was collected in 1908 by J. J. Vassal on Nui Ba Mountain
(=Lang Bian) (Napier, 1985).
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