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

4 DOUC LANGURS
very poor secondary forest patches. Some groups are already isolated due to agriculture. According to
reports of locals and hunters there are about 7 groups with 70 to 85 individuals remaining in the area.
Mom Ray National Park (KON TUM)
Special use forest: National park
Douc status: Provisional occurence, last report in 1995 (Do Tuoc, 1995)
Species recorded: P. nigripes (specimen); Pygathrix sp. (specimen)
Several museum specimens belonging to Black-shanked doucs are reported from the Mom Ray area.
One adult male skull (ZMVNU 867) was collected in May 1980 by Tran Hong Viet in the Dak Wang
locality (north of the park). One adult male skull (ZMVNU 851), two juvenile male skulls (ZMVNU 853
and 854) and two adult female skulls (ZMVNU 855 and 868) were collected in May 1980 and December
1981 by Tran Hong Viet in the R’Khoi (=Ro Koi) Commune (northeast of the park). One female skin
(ZMVNU 725) and three adult male skulls (ZMVNU 869, 870 and 877) were collected between April
1980 and January 1983 by Tran Hong Viet in Sa Son Commune (east of the park).
Du Tuoc (1995) identified specimens belonging to both nigripes and nemaeus in the national park.
The taxonomic determination of the doucs living in Mom Ray area is complicated by the discovery of
several specimens that do not show all the characteristics of any known species. One juvenile male
skin (ZMVNU 726), collected in June 1980 in Sa Son Commune (east of the park) is most likely P.
nigripes, but has whitish wrists. Several other specimens, though showing mainly the features of P.
nemaeus, have blackish shanks. This is the case for one adult female (ZMVNU 849), one adult male
(ZMVNU 850) collected in January 1978 by Hiet in Mo Ray Commune (south of the park) and one
adult of unknown sex (ZMVNU 732) collected in May 1980 by Tran Hong Viet in the Dak Su locality
(north of the park). Furthermore, a living animal observed in the guest house of Kon Tum town by Vu
Ngoc Thanh and Lippold, which was reported from Mom Ray, also seems to be an intergrade form (Vu
Ngoc Thanh, pers. comm.).
The evidence of P. cinerea occuring in the reserve, reported by Lippold & Vu Ngoc Thanh (1999), is not
considered as reliable here. This record is based on specimens observed in the houses of wildlife
traders of Plei Ku City (Gia Lai Province), which are reported to have been caught in the Mom Ray
area. However, Plei Ku is a trade post to the west of the Central Highlands. Several specimens of other
species seen by A. Tordoff (pers. comm.) in this locality had come from as far as Cambodia. Therefore,
we should not draw any conclusions from such specimens.
Kon Plong District (KON TUM)
Special use forest: None
Douc status: Occurrence confirmed, last evidence in 2001 (Eames et al., 2001)
Species recorded: P. cinerea (specimen), Pygathrix sp. (sighting)
Two to three individuals attributed to P. nigripes were seen in February 2000 by an FFI team during
an elephant survey conducted in the district (Trinh Viet Cuong, 2000). The sighting was made between
900 to 1,000m a.s.l. in a rich forest near Nuoc Ma stream of village No. 1 (Ngoc Tem Commune)
(14 O 45’21.0”N / 107 O 22’48.7”E).
A WWF- Indochina Programme survey conducted in December 2000-January 2001 observed a group
of 5-6 animals, including two juveniles. The sighting was made at an altitude of approximately 1,400m.
a.s.l. in ridge-top primary forest. The team also observed another group of about five individuals in
logged evergreen forest near the Nuoc Ca River. Unfortunately, the dim light and speed with which
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