Tenasserim Langur (Trachypithecus barbei)


MORPHOLOGY:
The dental formula of the Tenasserim langur is 2:1:2:3 on both the upper and lower jaws (Agrawal, 1974; Ankel-Simons, 2000). This species has a sacculated stomach to assist in the breakdown of cellulose. The Tenasserim langur has enlarged salivary glands to assist it in breaking down food. The canines are sexual dimorphic, with the male canines longer than female canines (Agrawal, 1974). The dorsal pelage coloration of the Tenasserim langur is described as sooty black (Agrawal, 1974; Groves, 2001). Ventrally this species is gray in color (Agrawal, 1974). There are sparse white hairs on the upper lip and blackish hairs on the lower lip with the lips being bluish black in coloration (Agrawal, 1974; Khajuria and Agrawal, 1979; Groves, 2001). The tail is black proximally but paler distally (Agrawal, 1974; Groves, 2001).

RANGE:
The Tenasserim langur is found in a narrow strip of land in the countries of Burma and Thailand (Groves, 2001). This species may have inhabited the area near Tripura, India, but it is rare or extinct (Khajuria and Agrawal, 1979).

ECOLOGY:

LOCOMOTION:
The Tenasserim langur moves through the forest quadrupedally.

SOCIAL BEHAVIOR:

VOCAL COMMUNICATION:

OLFACTORY COMMUNICATION:

VISUAL COMMUNICATION:

TACTILE COMMUNICATION:

REPRODUCTION:
The Tenasserim langur gives birth to one offspring at a time.

REFERENCES:
Agrawal, V.C. 1974. Taxonomic status of Barbe's leaf-monkey, Presbytis barbei Blyth. Primates. Vol. 15(2-3), 235-239.

Ankel-Simons, F. 2000. Primate Anatomy. Academic Press: San Diego.

Groves, C.P. 2001. Primate Taxonomy. Smithsonian Institute Press: Washington, D.C.

Khajuria, H. and Agrawal, V.C. 1979. On the types of Presbytis barbei Blyth. Primates. Vol. 20(2), 317-319.

Last Updated: June 20, 2007.
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