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

Vietnam Primate Conservation Status Review Part 2: LEAF MONKEYS
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Huong Son District (HA TINH)
No information was collected by Pham Nhat et al. (1996a) in the area during a survey with a special
emphasis on Hatinh langur in 1995 and 1996. The species is believed to be locally extinct (Pham
Nhat et al., 1996a).
Discussed records
Nhu Xuan District (THANH HOA) ca. 19 O 39’N/105 O 29’E and Tan Ky District (NGHE AN) ca. 19 O 05’ N/
105 O 25’E
The information about the occurrence in these areas (Nadler, 1996e) is based on stuffed animals
which were found in hunters’ houses. The hunters said that they had killed the animals in their fields
close to limestone outcrops which made an occurrence reliable. The hunters believed that the killing
of protected animals on their own land constituted extenuating circumstances. Subsequently, it was
discovered that the animals were actually hunted in Quang Binh Province, most probably in the
Phong Nha area.
Vu Quang Nature Reserve, Huong Khe District (HA TINH) ca. 18 O 09’-18 O 25’N / 105 O 16’-105 O 36’E
Hatinh langur was reported in the draft management plan of Vu Quang Nature Reserve (McKinnon,
1992). The locality is also reported in the reserve by the VRTC based on interviews conducted in July-
August 1997 (VRTC 1997). However, this reports has never been confirmed. Pham Nhat et al. (1996a)
heard the same reports but local informants could not identify the pictures of this primate taxon
(Pham Nhat et al., 1996a). The latter authors concluded that this occurrence is questionable. Limestone
hills, apparently preferred by the langurs, do not exist at the site.
Pu Huong Nature Reserve (NGHE AN) ca. 19 O 15’-19 O 29’N / 104 O 43’-105 O 00’E
Hatinh langurs were reported without reference in the investment plan of Pu Huong Nature Reserve
(Anon., 1995b). Regarding the geographic situation of the reserve, such occurrence is questionable.
Hatinh langurs were not recorded in 1995 during the field survey of Frontier (Kemp & Dilger, 1996).
Pu Mat Nature Reserve (NGHE AN) ca. 18 O 46’-19 O 08’N / 104 O 24’-104 O 59’E
Hatinh langurs were reported by Le Hien Hao (1973) in the Pu Mat area without references. However,
the existence of this species in the reserve now seems doubtful. This former record was probably
from forest on limestone karst in or near the buffer zone of Pu Mat. These areas are now surrounded
by intensive agriculture and, due to hunting and trapping, unlikely to support any viable large mammal
populations (Johns, 1999).
Le Thuy District (QUANH BINH) ca. 17 O 15’N/106 O 30’E
The occurrence is mentioned in the Red Data Book (Ministry of Science, Technology and Environment,
1992) without detailed information.