Among the most fascinating denizen of Malaysia's rainforest are the Leaf Monkeys. Their diet is comprised mainly of leaves, flowers, buds, seeds and shoots. Evolution has granted them complex stomachs with bacteria-filled fermenting chambers that digest leaves, releasing the normally indigestible sugars and deactivating toxins.
The Ref Leaf Monkey, a species of leaf monkey featured in the 30 sen stamp, is known locally as Lotong Merah. Being territorial in nature, they will chase away other monkeys in its area. They feed only during the days, breaking into sub-groups as they forage for foods. They can only be found in Kalimantan, Karimata Islands, Sarawak, Sabah and Brunei.
The Proboscis Monkey is featured in the 50 sen stamp. This unique species is easily recognisable by the male's large nose. They will not move further than 600 metres from river or stream. Being accomplished swimmers, they can swim underwater for up to 20 meters. Unlike the Ref Leaf Monkey, they are not territorial and will tolerate other groups in their area. Due to their dwindling numbers, they are a strictly protected species.
Date of Issue : 16 Dec 2003
Postmark : Kuala Lumpur
Denomination : 2 x 30 sen and 2 x 50 sen
Stamp Size : 30mm x 40mm
Paper : Watermarked, Phosphor Coated
Printing Process : Lithography
A LIL' NOTE
In 2016, after 13 years of above stamp issue, Pos Malaysia issued another set of stamps on Primates of Malaysia. Find out more here.